AVCodecContext Struct Reference
[Core functions/structures.]

main external API structure. More...

#include <avcodec.h>


Data Fields

const AVClassav_class
 information on struct for av_log
  • set by avcodec_alloc_context3

int log_level_offset
enum AVMediaType codec_type
struct AVCodeccodec
char codec_name [32]
enum CodecID codec_id
unsigned int codec_tag
 fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
unsigned int stream_codec_tag
 fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
attribute_deprecated int sub_id
void * priv_data
struct AVCodecInternalinternal
 Private context used for internal data.
void * opaque
 Private data of the user, can be used to carry app specific stuff.
int bit_rate
 the average bitrate
  • encoding: Set by user; unused for constant quantizer encoding.

int bit_rate_tolerance
 number of bits the bitstream is allowed to diverge from the reference.
int global_quality
 Global quality for codecs which cannot change it per frame.
int compression_level
 
  • encoding: Set by user.

int flags
 CODEC_FLAG_*.
int flags2
 CODEC_FLAG2_*
  • encoding: Set by user.

uint8_textradata
 some codecs need / can use extradata like Huffman tables.
int extradata_size
AVRational time_base
 This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
int ticks_per_frame
 For some codecs, the time base is closer to the field rate than the frame rate.
int delay
 Encoding: Number of frames delay there will be from the encoder input to the decoder output.
int width
 picture width / height.
int height
int coded_width
 Bitstream width / height, may be different from width/height if lowres enabled.
int coded_height
int gop_size
 the number of pictures in a group of pictures, or 0 for intra_only
  • encoding: Set by user.

enum PixelFormat pix_fmt
 Pixel format, see PIX_FMT_xxx.
int me_method
 Motion estimation algorithm used for video coding.
void(* draw_horiz_band )(struct AVCodecContext *s, const AVFrame *src, int offset[AV_NUM_DATA_POINTERS], int y, int type, int height)
 If non NULL, 'draw_horiz_band' is called by the libavcodec decoder to draw a horizontal band.
enum PixelFormat(* get_format )(struct AVCodecContext *s, const enum PixelFormat *fmt)
 callback to negotiate the pixelFormat
int max_b_frames
 maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 relative to the input.
float b_quant_factor
 qscale factor between IP and B-frames If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
int rc_strategy
 obsolete FIXME remove
int b_frame_strategy
attribute_deprecated int luma_elim_threshold
 luma single coefficient elimination threshold
  • encoding: Set by user.

attribute_deprecated int chroma_elim_threshold
 chroma single coeff elimination threshold
  • encoding: Set by user.

float b_quant_offset
 qscale offset between IP and B-frames
  • encoding: Set by user.

int has_b_frames
 Size of the frame reordering buffer in the decoder.
int mpeg_quant
 0-> h263 quant 1-> mpeg quant
  • encoding: Set by user.

float i_quant_factor
 qscale factor between P and I-frames If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
float i_quant_offset
 qscale offset between P and I-frames
  • encoding: Set by user.

float lumi_masking
 luminance masking (0-> disabled)
  • encoding: Set by user.

float temporal_cplx_masking
 temporary complexity masking (0-> disabled)
  • encoding: Set by user.

float spatial_cplx_masking
 spatial complexity masking (0-> disabled)
  • encoding: Set by user.

float p_masking
 p block masking (0-> disabled)
  • encoding: Set by user.

float dark_masking
 darkness masking (0-> disabled)
  • encoding: Set by user.

int slice_count
 slice count
  • encoding: Set by libavcodec.

int prediction_method
 prediction method (needed for huffyuv)
  • encoding: Set by user.

int * slice_offset
 slice offsets in the frame in bytes
  • encoding: Set/allocated by libavcodec.

AVRational sample_aspect_ratio
 sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel.
int me_cmp
 motion estimation comparison function
  • encoding: Set by user.

int me_sub_cmp
 subpixel motion estimation comparison function
  • encoding: Set by user.

int mb_cmp
 macroblock comparison function (not supported yet)
  • encoding: Set by user.

int ildct_cmp
 interlaced DCT comparison function
  • encoding: Set by user.

int dia_size
 ME diamond size & shape
  • encoding: Set by user.

int last_predictor_count
 amount of previous MV predictors (2a+1 x 2a+1 square)
  • encoding: Set by user.

int pre_me
 prepass for motion estimation
  • encoding: Set by user.

int me_pre_cmp
 motion estimation prepass comparison function
  • encoding: Set by user.

int pre_dia_size
 ME prepass diamond size & shape
  • encoding: Set by user.

int me_subpel_quality
 subpel ME quality
  • encoding: Set by user.

int dtg_active_format
 DTG active format information (additional aspect ratio information only used in DVB MPEG-2 transport streams) 0 if not set.
int me_range
 maximum motion estimation search range in subpel units If 0 then no limit.
int intra_quant_bias
 intra quantizer bias
  • encoding: Set by user.

int inter_quant_bias
 inter quantizer bias
  • encoding: Set by user.

attribute_deprecated int color_table_id
 color table ID
  • encoding: unused
  • decoding: Which clrtable should be used for 8bit RGB images.

int slice_flags
 slice flags
  • encoding: unused
  • decoding: Set by user.

int xvmc_acceleration
 XVideo Motion Acceleration
  • encoding: forbidden
  • decoding: set by decoder.

int mb_decision
 macroblock decision mode
  • encoding: Set by user.

uint16_t * intra_matrix
 custom intra quantization matrix
  • encoding: Set by user, can be NULL.

uint16_t * inter_matrix
 custom inter quantization matrix
  • encoding: Set by user, can be NULL.

int scenechange_threshold
 scene change detection threshold 0 is default, larger means fewer detected scene changes.
int noise_reduction
 noise reduction strength
  • encoding: Set by user.

attribute_deprecated int inter_threshold
attribute_deprecated int quantizer_noise_shaping
int me_threshold
 Motion estimation threshold below which no motion estimation is performed, but instead the user specified motion vectors are used.
int mb_threshold
 Macroblock threshold below which the user specified macroblock types will be used.
int intra_dc_precision
 precision of the intra DC coefficient - 8
  • encoding: Set by user.

int skip_top
 Number of macroblock rows at the top which are skipped.
int skip_bottom
 Number of macroblock rows at the bottom which are skipped.
float border_masking
 Border processing masking, raises the quantizer for mbs on the borders of the picture.
int mb_lmin
 minimum MB lagrange multipler
  • encoding: Set by user.

int mb_lmax
 maximum MB lagrange multipler
  • encoding: Set by user.

int me_penalty_compensation
 
  • encoding: Set by user.

int bidir_refine
 
  • encoding: Set by user.

int brd_scale
 
  • encoding: Set by user.

int keyint_min
 minimum GOP size
  • encoding: Set by user.

int refs
 number of reference frames
  • encoding: Set by user.

int chromaoffset
 chroma qp offset from luma
  • encoding: Set by user.

int scenechange_factor
 Multiplied by qscale for each frame and added to scene_change_score.
int mv0_threshold
 Note: Value depends upon the compare function used for fullpel ME.
int b_sensitivity
 Adjust sensitivity of b_frame_strategy 1.
enum AVColorPrimaries color_primaries
 Chromaticity coordinates of the source primaries.
enum AVColorTransferCharacteristic color_trc
 Color Transfer Characteristic.
enum AVColorSpace colorspace
 YUV colorspace type.
enum AVColorRange color_range
 MPEG vs JPEG YUV range.
enum AVChromaLocation chroma_sample_location
 This defines the location of chroma samples.
int slices
 Number of slices.
enum AVFieldOrder field_order
 Field order
  • encoding: set by libavcodec
  • decoding: Set by libavcodec.

int sample_rate
 samples per second
int channels
 number of audio channels
enum AVSampleFormat sample_fmt
 audio sample format
  • encoding: Set by user.

int frame_size
 Samples per packet, initialized when calling 'init'.
int frame_number
 Frame counter, set by libavcodec.
int block_align
 number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs.
int cutoff
 Audio cutoff bandwidth (0 means "automatic")
  • encoding: Set by user.

int request_channels
 Decoder should decode to this many channels if it can (0 for default)
  • encoding: unused
  • decoding: Set by user.

uint64_t channel_layout
 Audio channel layout.
uint64_t request_channel_layout
 Request decoder to use this channel layout if it can (0 for default)
  • encoding: unused
  • decoding: Set by user.

enum AVAudioServiceType audio_service_type
 Type of service that the audio stream conveys.
enum AVSampleFormat request_sample_fmt
 desired sample format
  • encoding: Not used.

int(* get_buffer )(struct AVCodecContext *c, AVFrame *pic)
 Called at the beginning of each frame to get a buffer for it.
void(* release_buffer )(struct AVCodecContext *c, AVFrame *pic)
 Called to release buffers which were allocated with get_buffer.
int(* reget_buffer )(struct AVCodecContext *c, AVFrame *pic)
 Called at the beginning of a frame to get cr buffer for it.
float qcompress
 amount of qscale change between easy & hard scenes (0.0-1.0)
float qblur
 amount of qscale smoothing over time (0.0-1.0)
int qmin
 minimum quantizer
  • encoding: Set by user.

int qmax
 maximum quantizer
  • encoding: Set by user.

int max_qdiff
 maximum quantizer difference between frames
  • encoding: Set by user.

float rc_qsquish
 ratecontrol qmin qmax limiting method 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
float rc_qmod_amp
int rc_qmod_freq
int rc_buffer_size
 decoder bitstream buffer size
  • encoding: Set by user.

int rc_override_count
 ratecontrol override, see RcOverride
  • encoding: Allocated/set/freed by user.

RcOverriderc_override
const char * rc_eq
 rate control equation
  • encoding: Set by user
  • decoding: unused

int rc_max_rate
 maximum bitrate
  • encoding: Set by user.

int rc_min_rate
 minimum bitrate
  • encoding: Set by user.

float rc_buffer_aggressivity
float rc_initial_cplx
 initial complexity for pass1 ratecontrol
  • encoding: Set by user.

float rc_max_available_vbv_use
 Ratecontrol attempt to use, at maximum,

of what can be used without an underflow.

float rc_min_vbv_overflow_use
 Ratecontrol attempt to use, at least,

times the amount needed to prevent a vbv overflow.

int rc_initial_buffer_occupancy
 Number of bits which should be loaded into the rc buffer before decoding starts.
int coder_type
 coder type
  • encoding: Set by user.

int context_model
 context model
  • encoding: Set by user.

int lmin
 minimum Lagrange multipler
  • encoding: Set by user.

int lmax
 maximum Lagrange multipler
  • encoding: Set by user.

int frame_skip_threshold
 frame skip threshold
  • encoding: Set by user.

int frame_skip_factor
 frame skip factor
  • encoding: Set by user.

int frame_skip_exp
 frame skip exponent
  • encoding: Set by user.

int frame_skip_cmp
 frame skip comparison function
  • encoding: Set by user.

int trellis
 trellis RD quantization
  • encoding: Set by user.

int min_prediction_order
 
  • encoding: Set by user.

int max_prediction_order
 
  • encoding: Set by user.

int64_t timecode_frame_start
 GOP timecode frame start number
  • encoding: Set by user, in non drop frame format
  • decoding: Set by libavcodec (timecode in the 25 bits format, -1 if unset).

void(* rtp_callback )(struct AVCodecContext *avctx, void *data, int size, int mb_nb)
int rtp_payload_size
int mv_bits
int header_bits
int i_tex_bits
int p_tex_bits
int i_count
int p_count
int skip_count
int misc_bits
int frame_bits
 number of bits used for the previously encoded frame
  • encoding: Set by libavcodec.

char * stats_out
 pass1 encoding statistics output buffer
  • encoding: Set by libavcodec.

char * stats_in
 pass2 encoding statistics input buffer Concatenated stuff from stats_out of pass1 should be placed here.
int workaround_bugs
 Work around bugs in encoders which sometimes cannot be detected automatically.
int strict_std_compliance
 strictly follow the standard (MPEG4, .
int error_concealment
 error concealment flags
  • encoding: unused
  • decoding: Set by user.

int debug
 debug
  • encoding: Set by user.

int debug_mv
 debug
  • encoding: Set by user.

int err_recognition
 Error recognition; may misdetect some more or less valid parts as errors.
int64_t reordered_opaque
 opaque 64bit number (generally a PTS) that will be reordered and output in AVFrame.reordered_opaque
struct AVHWAccelhwaccel
 Hardware accelerator in use
  • encoding: unused.

void * hwaccel_context
 Hardware accelerator context.
uint64_t error [AV_NUM_DATA_POINTERS]
 error
  • encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.

int dct_algo
 DCT algorithm, see FF_DCT_* below
  • encoding: Set by user.

int idct_algo
 IDCT algorithm, see FF_IDCT_* below.
attribute_deprecated unsigned dsp_mask
 Unused.
int bits_per_coded_sample
 bits per sample/pixel from the demuxer (needed for huffyuv).
int bits_per_raw_sample
 Bits per sample/pixel of internal libavcodec pixel/sample format.
int lowres
 low resolution decoding, 1-> 1/2 size, 2->1/4 size
  • encoding: unused
  • decoding: Set by user.

AVFramecoded_frame
 the picture in the bitstream
  • encoding: Set by libavcodec.

int thread_count
 thread count is used to decide how many independent tasks should be passed to execute()
  • encoding: Set by user.

int thread_type
 Which multithreading methods to use.
int active_thread_type
 Which multithreading methods are in use by the codec.
int thread_safe_callbacks
 Set by the client if its custom get_buffer() callback can be called synchronously from another thread, which allows faster multithreaded decoding.
int(* execute )(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size)
 The codec may call this to execute several independent things.
int(* execute2 )(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count)
 The codec may call this to execute several independent things.
void * thread_opaque
 thread opaque Can be used by execute() to store some per AVCodecContext stuff.
int nsse_weight
 noise vs.
int profile
 profile
  • encoding: Set by user.

int level
 level
  • encoding: Set by user.

enum AVDiscard skip_loop_filter
 
  • encoding: unused
    • decoding: Set by user.

enum AVDiscard skip_idct
 
  • encoding: unused
    • decoding: Set by user.

enum AVDiscard skip_frame
 
  • encoding: unused
    • decoding: Set by user.

uint8_tsubtitle_header
 Header containing style information for text subtitles.
int subtitle_header_size
int error_rate
 Simulates errors in the bitstream to test error concealment.
AVPacketpkt
 Current packet as passed into the decoder, to avoid having to pass the packet into every function.
uint64_t vbv_delay
 VBV delay coded in the last frame (in periods of a 27 MHz clock).
int64_t pts_correction_num_faulty_pts
 Current statistics for PTS correction.
int64_t pts_correction_num_faulty_dts
 Number of incorrect PTS values so far.
int64_t pts_correction_last_pts
 Number of incorrect DTS values so far.
int64_t pts_correction_last_dts
 PTS of the last frame.


Detailed Description

main external API structure.

New fields can be added to the end with minor version bumps. Removal, reordering and changes to existing fields require a major version bump. Please use AVOptions (av_opt* / av_set/get*()) to access these fields from user applications. sizeof(AVCodecContext) must not be used outside libav*.

Definition at line 1316 of file avcodec.h.


Field Documentation

Type of service that the audio stream conveys.

  • encoding: Set by user.
  • decoding: Set by libavcodec.

Definition at line 2150 of file avcodec.h.

Referenced by ac3_decode_frame(), ff_aac_ac3_parse(), ff_ac3_encode_init(), ff_ac3_validate_metadata(), mov_read_dac3(), mov_read_dec3(), and transcode_init().

information on struct for av_log

  • set by avcodec_alloc_context3

Definition at line 1321 of file avcodec.h.

Referenced by avcodec_get_context_defaults3().

qscale factor between IP and B-frames If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).

If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).

  • encoding: Set by user.
  • decoding: unused

Definition at line 1574 of file avcodec.h.

Referenced by add_codec(), ff_xvid_rate_estimate_qscale(), ffm_read_header(), ffm_write_header(), get_diff_limited_q(), get_qminmax(), get_qscale(), X264_init(), XAVS_init(), and xvid_encode_init().

qscale offset between IP and B-frames

  • encoding: Set by user.

  • decoding: unused

Definition at line 1603 of file avcodec.h.

Referenced by add_codec(), ff_xvid_rate_estimate_qscale(), ffm_read_header(), ffm_write_header(), get_diff_limited_q(), get_qminmax(), get_qscale(), and xvid_encode_init().

Adjust sensitivity of b_frame_strategy 1.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2028 of file avcodec.h.

Referenced by select_input_picture().

  • encoding: Set by user.

  • decoding: unused

Definition at line 1978 of file avcodec.h.

Referenced by bidir_refine().

the average bitrate

  • encoding: Set by user; unused for constant quantizer encoding.

  • decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.

Definition at line 1381 of file avcodec.h.

Referenced by aac_encode_frame(), aac_encode_init(), aacPlus_encode_init(), ac3_decode_frame(), add_audio_stream(), add_av_stream(), add_codec(), add_video_stream(), aea_read_header(), amf_parse_object(), amr_read_packet(), amr_wb_encode_frame(), amr_wb_encode_init(), apc_read_header(), asf_read_header(), asf_write_header1(), atrac3_decode_init(), audio_encode_example(), avcodec_open2(), avformat_new_stream(), avi_write_header(), avisynth_read_header(), avpriv_adx_decode_header(), avpriv_dv_init_demux(), avpriv_dv_produce_packet(), bfi_read_header(), cin_read_header(), compute_bandwidth(), compute_status(), cook_decode_init(), daud_header(), dc1394_read_common(), dca_decode_frame(), decode_frame(), decode_ppc(), dv_extract_audio_info(), dv_extract_video_info(), ea_read_header(), encode_init(), estimate_timings_from_bit_rate(), Faac_encode_init(), fbdev_read_header(), ff_aac_ac3_parse(), ff_dnxhd_find_cid(), ff_dv_offset_reset(), ff_MPV_encode_init(), ff_parse_specific_params(), ff_pcm_read_seek(), ff_voc_get_packet(), ff_wma_init(), ff_xvid_rate_control_init(), ffm_read_header(), ffm_write_header(), film_read_header(), find_stream_in_feed(), flic_read_header(), flv_write_header(), fourxm_read_header(), get_aiff_header(), get_bit_rate(), get_sindex(), grab_read_header(), gsm_read_header(), gxf_write_header(), gxf_write_mpeg_auxiliary(), handle_file(), idcin_read_header(), iff_read_header(), init_bitstream_params(), ipmovie_read_header(), iss_read_header(), lame_window_init(), libgsm_encode_init(), libschroedinger_encode_init(), lxf_read_header(), matroska_read_header(), mlp_parse(), mmf_read_header(), modify_current_stream(), mov_build_index(), mov_read_header(), mov_write_esds_tag(), mov_write_isml_manifest(), mov_write_uuidprof_tag(), mp3_parse_vbr_tags(), mp3_write_xing(), mp3lame_encode_init(), MPA_encode_init(), mpeg_decode_postinit(), mpeg_mux_init(), mpegaudio_parse(), mpegps_read_packet(), mpegts_read_header(), mpegvideo_extract_headers(), mtv_read_header(), mxf_write_d10_video_packet(), mxf_write_header(), mxf_write_mpegvideo_desc(), oggvorbis_init_encoder(), ogm_dshow_header(), ogm_header(), oma_read_header(), optimum_dist(), optimum_use15_7(), parse_ffconfig(), parse_mpeg1waveformatex(), pcm_bluray_parse_header(), pcm_encode_init(), print_enc_params(), psy_3gpp_init(), psy_3gpp_window(), qcp_read_header(), qdm2_decode_init(), ra144_encode_init(), read_desc_chunk(), read_header(), real_parse_asm_rule(), rl2_read_header(), rm_read_header(), rm_write_header(), roq_dpcm_encode_init(), roq_read_packet(), rv10_write_header(), s302m_parse_frame_header(), search_for_quantizers_twoloop(), seq_read_header(), show_stream(), sipr_decoder_init(), sox_read_header(), tmv_read_header(), transcode_init(), twin_decode_frame(), twin_decode_init(), v4l2_read_header(), validate_options(), vid_read_packet(), video_encode_example(), vmd_read_header(), vorbis_header(), vp8_init(), vqf_read_header(), vqf_read_seek(), wc3_read_header(), wsaud_read_header(), x11grab_read_header(), X264_init(), xa_read_header(), XAVS_init(), xmv_read_header(), xvid_encode_init(), and xwma_read_header().

number of bits the bitstream is allowed to diverge from the reference.

the reference can be CBR (for CBR pass1) or VBR (for pass2)

  • encoding: Set by user; unused for constant quantizer encoding.
  • decoding: unused

Definition at line 1389 of file avcodec.h.

Referenced by add_codec(), ff_MPV_encode_init(), ff_rate_estimate_qscale(), ffm_read_header(), ffm_write_header(), parse_ffconfig(), and XAVS_init().

bits per sample/pixel from the demuxer (needed for huffyuv).

  • encoding: Set by libavcodec.
  • decoding: Set by user.

Definition at line 2672 of file avcodec.h.

Referenced by aasc_decode_frame(), aasc_decode_init(), adpcm_decode_init(), adpcm_encode_init(), aiff_write_header(), apc_read_header(), ape_decode_init(), ape_read_header(), asf_read_stream_properties(), av_get_audio_frame_duration(), avi_read_header(), avisynth_read_header(), avs_read_packet(), avui_decode_frame(), bfi_read_header(), bmp_encode_frame(), bmp_encode_init(), cin_read_header(), cinepak_decode_init(), create_audio_stream(), daud_header(), decode_frame(), decode_frame_byterun1(), decode_frame_ilbm(), decode_init(), decode_wave_header(), deplanarize(), dshow_add_device(), ea_read_header(), encode_frame(), encode_init(), ff_cmap_read_palette(), ff_mov_read_stsd_entries(), ff_raw_read_header(), ff_voc_get_packet(), film_read_header(), flic_read_header(), flv_read_packet(), flv_set_audio_codec(), fourxm_read_header(), get_aiff_header(), get_audio_flags(), get_codec_data(), get_packet_header(), get_sindex(), idcin_read_header(), iff_read_header(), ipmovie_read_header(), ipvideo_decode_init(), iss_read_header(), mmf_read_header(), mov_get_rawvideo_codec_tag(), mov_write_video_tag(), mpc8_read_header(), mpc_read_header(), mpegps_read_packet(), msrle_decode_frame(), msrle_decode_init(), msvideo1_decode_init(), mxf_get_d10_aes3_packet(), mxf_parse_structural_metadata(), mxg_read_header(), nsv_parse_NSVs_header(), nuv_header(), oma_read_header(), parse_media_type(), pcm_bluray_parse_header(), pcm_decode_frame(), pcm_encode_init(), qtrle_decode_frame(), qtrle_decode_init(), qtrle_encode_init(), raw_decode(), raw_init_decoder(), raw_init_encoder(), read_desc_chunk(), read_header(), read_packet(), rl2_read_header(), roq_read_packet(), rpl_read_header(), rtp_write_packet(), s302m_decode_frame(), s302m_parse_frame_header(), seq_read_header(), smacker_read_header(), smjpeg_read_header(), smka_decode_init(), sox_read_header(), targa_encode_frame(), tmv_read_header(), transcode_init(), tta_decode_init(), tta_read_header(), update_context_from_thread(), utvideo_encode_init(), vfw_read_header(), vid_read_packet(), vmd_read_header(), vmdaudio_decode_init(), voc_write_packet(), wavpack_decode_init(), wc3_read_header(), wsaud_read_header(), wsvqa_read_packet(), wv_read_header(), xmv_read_header(), xwma_read_header(), and y41p_encode_init().

number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs.

Definition at line 2112 of file avcodec.h.

Referenced by adpcm_encode_init(), aea_read_header(), aea_read_packet(), aiff_read_header(), aiff_read_packet(), aiff_write_header(), aiff_write_trailer(), apc_read_header(), asf_write_header1(), atrac1_decode_frame(), atrac3_decode_frame(), atrac3_decode_init(), av_get_audio_frame_duration(), avformat_write_header(), avi_read_header(), avi_write_packet(), avisynth_read_header(), caf_write_header(), caf_write_packet(), caf_write_trailer(), cook_decode_frame(), cook_decode_init(), daud_header(), decode_init(), decode_packet(), dxa_read_header(), ea_read_header(), encode_init(), ff_mov_read_stsd_entries(), ff_parse_specific_params(), ff_pcm_read_seek(), ff_raw_read_header(), ff_rm_parse_packet(), ff_rm_retrieve_cache(), ff_wma_init(), film_read_header(), flic_read_header(), fourxm_read_header(), g729_read_header(), g729_read_packet(), get_aiff_header(), get_nb_samples(), get_sindex(), gsm_decode_frame(), gsm_init(), handle_file(), idcin_read_header(), iff_read_header(), ipmovie_read_header(), iss_read_header(), libgsm_decode_frame(), libgsm_decode_init(), libgsm_encode_frame(), libgsm_encode_init(), matroska_parse_block(), matroska_read_header(), mov_write_header(), mov_write_isml_manifest(), mxf_write_d10_audio_packet(), mxf_write_wav_common(), mxg_read_header(), oma_read_header(), oma_read_packet(), oma_write_header(), pcm_encode_init(), ra288_decode_frame(), raw_read_packet(), read_desc_chunk(), read_header(), rl2_read_header(), rm_read_audio_stream_info(), roq_read_packet(), seq_read_header(), sipr_decoder_init(), sox_read_header(), sox_read_packet(), str_read_packet(), transcode_init(), tta_decode_init(), vmd_read_header(), vmdaudio_decode_frame(), vmdaudio_decode_init(), wc3_read_header(), wmavoice_decode_init(), wmavoice_decode_packet(), xmv_read_header(), xwma_read_header(), and xwma_read_packet().

Border processing masking, raises the quantizer for mbs on the borders of the picture.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1950 of file avcodec.h.

Referenced by adaptive_quantization(), and ff_MPV_encode_init().

  • encoding: Set by user.

  • decoding: unused

Definition at line 1985 of file avcodec.h.

Referenced by estimate_best_b_count().

number of audio channels

Definition at line 2082 of file avcodec.h.

Referenced by aac_decode_frame_int(), aac_decode_init(), aac_encode_frame(), aac_encode_init(), aacPlus_encode_init(), ac3_decode_frame(), ac3_decode_init(), add_audio_stream(), add_av_stream(), add_codec(), add_input_streams(), adpcm_compress_trellis(), adpcm_decode_frame(), adpcm_decode_init(), adpcm_encode_init(), adpcm_swf_decode(), adx_decode_frame(), adx_decode_init(), adx_encode_frame(), adx_encode_header(), adx_encode_init(), adx_read_packet(), aea_read_header(), aiff_write_header(), alac_decode_frame(), alac_decode_init(), alac_encode_frame(), alac_encode_init(), amr_decode_fix_avctx(), amr_handle_packet(), amr_read_header(), amr_wb_encode_init(), apc_read_header(), ape_decode_init(), ape_read_header(), apply_param_change(), apply_window_and_mdct(), atrac1_decode_init(), atrac3_decode_init(), au_read_header(), au_read_packet(), audio_decode_example(), audio_decode_frame(), audio_encode_example(), audio_get_buffer(), audio_read_header(), audio_write_header(), av_get_audio_frame_duration(), avcodec_decode_audio3(), avcodec_encode_audio(), avcodec_encode_audio2(), avcodec_open2(), avcodec_string(), avformat_write_header(), avisynth_read_header(), avpriv_adx_decode_header(), avpriv_flac_parse_streaminfo(), bfi_read_header(), bmv_aud_decode_init(), bmv_read_header(), caf_write_header(), caf_write_trailer(), cdata_read_header(), cdxl_read_packet(), celt_header(), cin_read_header(), cinaudio_decode_init(), compute_status(), configure_output_audio_filter(), construct_perm_table(), cook_decode_init(), cook_parse(), create_audio_stream(), create_vorbis_context(), daud_header(), daud_write_header(), dca_decode_frame(), dca_decode_init(), dec_gain(), decode_audio(), decode_block(), decode_extension_payload(), decode_frame(), decode_init(), decode_ppc(), decode_stream_header(), decoder_init(), DEF_CHOOSE_FORMAT(), dpcm_decode_init(), dshow_add_device(), dv_extract_audio_info(), dv_init_mux(), ea_read_header(), eightsvx_decode_frame(), eightsvx_decode_init(), encode_frame(), encode_frame_int16(), encode_init(), Faac_encode_frame(), Faac_encode_init(), ff_aac_ac3_parse(), ff_ac3_validate_metadata(), ff_audio_interleave_init(), ff_mov_read_stsd_entries(), ff_mp4_read_dec_config_descr(), ff_pcm_read_seek(), ff_psy_init(), ff_psy_preprocess_end(), ff_psy_preprocess_init(), ff_raw_read_header(), ff_rtp_get_codec_info(), ff_rtp_get_payload_type(), ff_voc_get_packet(), ff_wma_init(), ffm_read_header(), ffm_write_header(), film_read_header(), flac_decode_init(), flac_encode_init(), flic_read_header(), flv_read_packet(), flv_write_header(), fourxm_read_header(), g722_decode_init(), g722_encode_init(), g723_1_init(), g729_read_header(), get_aiff_header(), get_audio_flags(), get_best_header(), get_bit_rate(), get_codec_data(), get_nb_samples(), get_sindex(), gsm_init(), gsm_read_header(), guess_input_channel_layout(), gxf_write_header(), handle_file(), has_codec_parameters(), idcin_read_header(), iff_read_header(), imc_decode_init(), imdct_output(), init_bitstream_params(), init_filters(), init_mdct_win(), init_sample_buffers(), ipmovie_read_header(), iss_read_header(), iss_read_packet(), lame_window_init(), lavfi_read_header(), libcelt_dec_decode(), libcelt_dec_init(), libgsm_decode_init(), libgsm_encode_init(), libspeex_decode_frame(), libspeex_decode_init(), lxf_read_header(), mace_decode_frame(), mace_decode_init(), matroska_read_header(), mkv_write_tracks(), mlp_parse(), mmf_read_header(), modplug_read_header(), mov_read_dac3(), mov_read_dec3(), mov_write_audio_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_uuidprof_tag(), mp3_header_compress(), mp3_header_decompress(), mp3_write_xing(), mp3lame_encode_init(), MPA_encode_init(), mpc7_decode_init(), mpc8_decode_frame(), mpc8_decode_init(), mpc8_read_header(), mpc_read_header(), mpeg_mux_init(), mpegaudio_parse(), mpegps_read_packet(), mxf_get_d10_aes3_packet(), mxf_parse_structural_metadata(), mxf_write_d10_audio_packet(), mxf_write_generic_sound_common(), mxg_read_header(), new_audio_stream(), nsv_read_chunk(), nut_read_header(), oggvorbis_decode_init(), oggvorbis_init_encoder(), ogm_dshow_header(), ogm_header(), oma_read_header(), oma_write_header(), open_audio(), opt_map_channel(), opt_output_file(), output_configure(), output_data(), pad_last_frame(), parse_ffconfig(), parse_mpeg1waveformatex(), pcm_bluray_decode_frame(), pcm_bluray_parse_header(), pcm_decode_frame(), pcm_decode_init(), pcm_encode_frame(), pcm_encode_init(), pmp_header(), pop_output_configuration(), print_enc_params(), psy_3gpp_init(), psy_3gpp_window(), pulse_read_header(), qcp_read_header(), qdm2_decode_init(), r3d_read_red1(), ra144_encode_init(), raw_read_packet(), read_and_decode_spectrum(), read_channel_data(), read_desc_chunk(), read_frame_data(), read_header(), read_major_sync(), read_packet(), read_restart_header(), read_specific_config(), revert_channel_correlation(), rl2_read_header(), rm_read_audio_stream_info(), roq_dpcm_encode_frame(), roq_dpcm_encode_init(), roq_read_packet(), rso_read_header(), rso_write_header(), rtp_write_packet(), rv10_write_header(), s302m_decode_frame(), s302m_parse_frame_header(), sbg_read_header(), search_for_quantizers_twoloop(), seq_read_header(), show_stream(), smacker_read_header(), smjpeg_read_header(), smjpeg_write_header(), smka_decode_frame(), smka_decode_init(), sol_read_header(), sox_read_header(), sox_write_header(), speex_header(), str_read_packet(), stream_component_open(), stream_cycle_channel(), swf_write_header(), thp_read_header(), tmv_read_header(), transcode_init(), truespeech_decode_init(), tta_decode_init(), tta_read_header(), twin_decode_init(), validate_options(), vid_read_packet(), vmd_read_header(), vmdaudio_decode_frame(), vmdaudio_decode_init(), voc_write_packet(), vorbis_decode_init(), vorbis_encode_init(), vorbis_header(), vqf_read_header(), wavesynth_decode(), wavesynth_init(), wavpack_decode_block(), wavpack_decode_init(), wc3_read_header(), wma_decode_init(), write_audio_frame(), write_frame(), write_frame_header(), write_streamheader(), ws_snd_decode_init(), wsaud_read_header(), wsaud_read_packet(), wsvqa_read_packet(), wv_read_header(), wv_unpack_mono(), wv_unpack_stereo(), xa_read_header(), xa_read_packet(), xmv_read_header(), xwma_read_header(), and yop_read_header().

attribute_deprecated int AVCodecContext::chroma_elim_threshold

chroma single coeff elimination threshold

  • encoding: Set by user.

  • decoding: unused

Definition at line 1595 of file avcodec.h.

Referenced by ff_MPV_encode_init(), and parse_ffconfig().

This defines the location of chroma samples.

  • encoding: Set by user
  • decoding: Set by libavcodec

Definition at line 2063 of file avcodec.h.

Referenced by decode_init(), decode_vui_parameters(), ff_dvvideo_init(), ff_h263_decode_init(), ff_h264_decode_init(), ff_mjpeg_decode_init(), mpeg_decode_init(), transcode_init(), update_context_from_thread(), vp3_decode_init(), and yuv4_read_header().

chroma qp offset from luma

  • encoding: Set by user.

  • decoding: unused

Definition at line 2006 of file avcodec.h.

Referenced by X264_init(), and XAVS_init().

Definition at line 1325 of file avcodec.h.

Referenced by a64_write_header(), a64_write_packet(), a64multi_init_encoder(), adpcm_compress_trellis(), adpcm_decode_frame(), adpcm_decode_init(), adpcm_encode_init(), apply_param_change(), assert_codec_experimental(), audio_decode_frame(), avcodec_close(), avcodec_copy_context(), avcodec_decode_audio4(), avcodec_decode_subtitle2(), avcodec_decode_video2(), avcodec_encode_audio2(), avcodec_encode_subtitle(), avcodec_encode_video2(), avcodec_flush_buffers(), avcodec_open2(), avcodec_string(), avformat_find_stream_info(), close_connection(), codec_child_next(), common_end(), common_init(), config(), context_to_name(), copy_frame(), decode_end(), decode_frame(), decode_init(), decode_nal_units(), decode_slice_header(), do_video_out(), dpcm_decode_frame(), dpcm_decode_init(), eightsvx_decode_frame(), eightsvx_decode_init(), encode_init(), execute_decode_slices(), ff_draw_horiz_band(), ff_er_frame_end(), ff_h263_decode_frame(), ff_h263_decode_init(), ff_mjpeg_decode_init(), ff_MPV_encode_init(), ff_MPV_frame_end(), ff_thread_can_start_frame(), ff_thread_flush(), ff_thread_get_buffer(), ff_thread_init(), ff_vdpau_mpeg4_decode_picture(), ff_vp56_init(), ff_wma_init(), field_end(), flush_encoders(), frame_thread_free(), frame_thread_init(), frame_worker_thread(), get_nb_samples(), h261_decode_init(), init(), mov_write_video_tag(), mpeg_decode_init(), open_audio(), pcm_decode_frame(), pcm_decode_init(), pcm_encode_frame(), pcm_encode_init(), read_thread(), receive_frame(), show_stream(), submit_packet(), svq1_decode_init(), svq3_decode_init(), try_decode_frame(), update_context_from_thread(), vaapi_mpeg4_decode_slice(), vaapi_mpeg4_start_frame(), validate_thread_parameters(), vc1_decode_frame(), vc1_decode_init(), vcr2_init_sequence(), vp56_add_predictors_dc(), vp56_decode_4mv(), vp6_decode_init(), wma_decode_init(), write_frame(), and xan_decode_frame().

Definition at line 1327 of file avcodec.h.

Referenced by add_av_stream(), add_input_streams(), add_video_stream(), adts_aac_read_header(), adx_read_header(), aea_read_header(), aiff_write_header(), amr_decode_fix_avctx(), amr_handle_packet(), amr_read_header(), amr_read_packet(), apc_read_header(), ape_read_header(), asf_read_stream_properties(), asf_write_header1(), au_read_header(), au_read_packet(), audio_read_header(), audio_write_header(), av_find_best_stream(), av_get_audio_frame_duration(), avcodec_align_dimensions2(), avcodec_encode_audio(), avcodec_open2(), avcodec_string(), avformat_find_stream_info(), avformat_write_header(), avi_read_header(), avi_write_header(), avi_write_packet(), avi_write_trailer(), avisynth_read_header(), avpriv_dv_init_demux(), avpriv_mpa_decode_header(), avs_read_packet(), bfi_read_header(), bmv_read_header(), caf_write_header(), caf_write_trailer(), cdata_read_header(), cdxl_read_packet(), celt_header(), choose_decoder(), choose_encoder(), choose_pix_fmts(), choose_pixel_fmt(), cin_read_header(), close_input_file(), commit_bitstream_and_slice_buffer(), compute_pkt_fields(), compute_status(), create_audio_stream(), create_stream(), cyuv_decode_frame(), daud_header(), dc1394_read_common(), decode_end(), decode_frame(), decode_init(), decode_mb(), decode_slice(), decode_stream_header(), determinable_frame_size(), dfa_read_header(), dirac_header(), do_streamcopy(), do_subtitle_out(), dshow_add_device(), dsputil_init_3dnow(), dsputil_init_mmx2(), dv_extract_audio_info(), dv_init_mux(), dxa_read_header(), ea_read_header(), encode_frame(), encode_mb(), estimate_best_b_count(), extract_mpeg4_header(), fbdev_read_header(), ff_aac_ac3_parse(), ff_ac3_encode_init(), ff_asf_parse_packet(), ff_audio_interleave_init(), ff_er_frame_end(), ff_h264_decode_init(), ff_id3v2_parse_apic(), ff_id3v2_write_apic(), ff_init_me(), ff_ivi_decode_close(), ff_ivi_decode_frame(), ff_load_image(), ff_mjpeg_encode_picture_header(), ff_mjpeg_find_marker(), ff_mov_read_stsd_entries(), ff_mov_write_packet(), ff_mp4_read_dec_config_descr(), ff_MPV_encode_init(), ff_parse_mpeg2_descriptor(), ff_pcm_read_seek(), ff_pnm_decode_header(), ff_psy_init(), ff_raw_audio_read_header(), ff_raw_read_header(), ff_raw_video_read_header(), ff_read_packet(), ff_rm_parse_packet(), ff_rm_read_mdpr_codecdata(), ff_rtp_get_codec_info(), ff_rtp_get_payload_type(), ff_rtp_parse_open(), ff_rv34_decode_init(), ff_voc_get_packet(), ffm_read_header(), ffm_write_header(), ffserver_opt_preset(), film_read_header(), find_expected_header(), find_stream_in_feed(), flac_header(), flac_read_header(), flic_read_header(), flv_read_packet(), flv_set_audio_codec(), flv_set_video_codec(), flv_write_header(), flv_write_packet(), flv_write_trailer(), fourxm_read_header(), frame_worker_thread(), g723_1_init(), g729_read_header(), get_aiff_header(), get_attachment(), get_audio_flags(), get_bit_rate(), get_codec_data(), get_packet_header(), get_sindex(), get_video_private_data(), grab_read_header(), gsm_decode_frame(), gsm_init(), gsm_parse(), gsm_read_header(), guess_mv(), gxf_packet(), gxf_write_header(), gxf_write_media_preamble(), gxf_write_packet(), gxf_write_umf_media_description(), gxf_write_umf_media_mpeg(), handle_file(), has_codec_parameters(), has_decode_delay_been_guessed(), idcin_read_header(), iff_read_header(), imx_dump_header(), init_input_stream(), ipmovie_read_header(), ipod_get_codec_tag(), is_intra_more_likely(), is_intra_only(), iss_read_header(), ivf_write_header(), jacosub_read_header(), latm_write_header(), latm_write_packet(), lavfi_read_header(), libgsm_decode_init(), libgsm_encode_frame(), libgsm_encode_init(), libgsm_flush(), lmlm4_read_header(), loas_read_header(), lxf_read_header(), lxf_read_packet(), m4sl_cb(), mace_decode_frame(), matroska_parse_block(), matroska_read_header(), microdvd_read_header(), microdvd_write_header(), mjpeg_decode_scan(), mjpega_dump_header(), mkv_write_attachments(), mkv_write_block(), mkv_write_codecprivate(), mkv_write_packet_internal(), mkv_write_tracks(), mmf_read_header(), modplug_read_header(), mov_find_codec_tag(), mov_get_codec_tag(), mov_read_enda(), mov_read_extradata(), mov_read_hdlr(), mov_read_trak(), mov_read_wave(), mov_write_audio_tag(), mov_write_chan_tag(), mov_write_esds_tag(), mov_write_ftyp_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_uuidprof_tag(), mov_write_video_tag(), mov_write_wave_tag(), movie_common_init(), mp3_read_header(), mp4_get_codec_tag(), mpc8_read_header(), mpc_read_header(), mpeg1_decode_sequence(), mpeg_decode_postinit(), mpeg_decode_sequence_extension(), mpeg_get_pixelformat(), mpeg_mux_init(), mpegps_read_packet(), mpegts_find_stream_type(), mpegts_push_data(), mpegts_read_header(), mpegts_set_stream_info(), mpegts_write_header(), mpegts_write_packet_internal(), mpegts_write_pes(), mpegts_write_pmt(), mpegvideo_extract_headers(), msnwc_tcp_read_header(), mtv_read_header(), mxf_handle_small_eubc(), mxf_parse_structural_metadata(), mxf_write_d10_audio_packet(), mxf_write_generic_sound_common(), mxf_write_header(), mxf_write_packet(), mxg_read_header(), nc_read_header(), nsv_parse_NSVs_header(), nsv_read_chunk(), nut_read_header(), nuv_header(), ogg_buffer_data(), ogg_validate_keyframe(), ogg_write_header(), ogg_write_packet(), ogg_write_trailer(), ogm_dshow_header(), ogm_header(), old_dirac_header(), old_flac_header(), oma_read_header(), open_input_file(), parse(), parse_ffconfig(), parse_fmtp(), parse_media_type(), parse_mpeg1waveformatex(), pcm_decode_frame(), pmp_header(), pulse_read_header(), put_xiph_codecpriv(), pva_read_header(), qcp_read_header(), qdm2_parse_packet(), r3d_read_red1(), raw_read_packet(), rdt_parse_packet(), read_access_unit(), read_desc_chunk(), read_ffserver_streams(), read_frame(), read_frame_internal(), read_header(), read_kuki_chunk(), read_major_sync(), read_matrix_params(), read_packet(), read_restart_header(), remove_extradata(), rl2_read_header(), rm_ac3_swap_bytes(), rm_read_audio_stream_info(), rm_write_audio(), roq_read_packet(), rpl_read_header(), rso_read_header(), rso_read_packet(), rso_write_header(), rtp_parse_packet_internal(), rtp_write_header(), rtp_write_packet(), rv10_decode_init(), rv10_write_header(), rv34_parse(), sbg_read_header(), sdl_write_header(), sdp_parse_fmtp_config_h264(), seek_frame_generic(), seq_read_header(), set_codec_from_probe_data(), setup_find_stream_info_opts(), show_stream(), siff_parse_vbv1(), smacker_read_header(), smjpeg_read_header(), smjpeg_write_header(), sol_read_header(), sox_read_header(), sox_write_header(), sox_write_trailer(), sp5x_decode_frame(), spdif_read_packet(), spdif_write_header(), speex_header(), srt_read_header(), str_read_packet(), stream_component_open(), svq3_parse_packet(), swf_read_packet(), swf_write_header(), swf_write_video(), tb_unreliable(), theora_header(), thp_read_header(), tmv_read_header(), transcode_init(), try_decode_frame(), tta_read_header(), txd_read_header(), v408_decode_frame(), v408_encode_frame(), v4l2_read_header(), vaapi_vc1_decode_slice(), validate_codec_tag(), vc1_decode_end(), vc1_decode_frame(), vc1_decode_init(), vc1_decode_init_alloc_tables(), vc1t_read_header(), vc1test_write_header(), vcr2_init_sequence(), vfw_read_header(), vid_read_packet(), vmd_read_header(), vorbis_header(), vqf_read_header(), wc3_read_header(), write_header(), write_stream_codec_info(), wsaud_read_header(), wsaud_read_packet(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_header(), x11grab_read_header(), xa_read_header(), xmv_read_header(), xvid_encode_init(), xwma_read_header(), yop_read_header(), and yuv4_read_header().

fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').

This is used to work around some encoder bugs. A demuxer should set this to what is stored in the field used to identify the codec. If there are multiple such fields in a container then the demuxer should choose the one which maximizes the information about the used codec. If the codec tag field in a container is larger than 32 bits then the demuxer should remap the longer ID to 32 bits with a table or other structure. Alternatively a new extra_codec_tag + size could be added but for this a clear advantage must be demonstrated first.

  • encoding: Set by user, if not then the default based on codec_id will be used.
  • decoding: Set by user, will be converted to uppercase by libavcodec during init.

Definition at line 1342 of file avcodec.h.

Referenced by a64multi_init_encoder(), aasc_decode_frame(), add_input_streams(), aiff_write_header(), amr_read_header(), ape_read_header(), asf_read_stream_properties(), asf_write_header1(), au_read_header(), av_get_audio_frame_duration(), avcodec_string(), avformat_write_header(), avi_read_header(), avi_write_header(), avisynth_read_header(), avpriv_dv_frame_profile2(), cdata_read_header(), cdxl_read_packet(), cin_read_header(), daud_header(), decode_frame(), decode_frame_byterun1(), decode_frame_ilbm(), decode_init(), decode_stream_header(), dpcm_decode_frame(), dpcm_decode_init(), ea_read_header(), encode_init(), ff_mjpeg_decode_sos(), ff_mov_init_hinting(), ff_mov_read_stsd_entries(), ff_MPV_common_init(), ff_parse_mpeg2_descriptor(), ff_rm_read_mdpr_codecdata(), ffm_read_header(), ffm_write_header(), film_read_header(), flic_read_header(), flv_set_audio_codec(), flv_set_video_codec(), flv_write_header(), flv_write_packet(), fourxm_read_header(), get_aiff_header(), get_audio_flags(), get_codec_data(), handle_file(), idcin_read_header(), iff_read_header(), ipmovie_read_header(), ipod_get_codec_tag(), ivf_write_header(), lxf_read_header(), matroska_read_header(), mkv_write_codecprivate(), mkv_write_tracks(), mov_get_codec_tag(), mov_get_rawvideo_codec_tag(), mov_read_header(), mov_write_hdlr_tag(), mov_write_ms_tag(), mov_write_stbl_tag(), mov_write_stsd_tag(), mp4_get_codec_tag(), mpeg_decode_frame(), mpegts_set_stream_info(), msnwc_tcp_read_header(), new_output_stream(), nsv_parse_NSVs_header(), nut_read_header(), ogm_header(), oma_read_header(), oma_write_header(), parse_ffconfig(), pmt_cb(), prores_encode_init(), raw_decode(), raw_encode(), raw_init_decoder(), raw_init_encoder(), read_desc_chunk(), read_header(), rl2_read_header(), rm_read_audio_stream_info(), roq_read_packet(), rpl_read_header(), rpl_read_packet(), rso_read_header(), rso_write_header(), rv10_write_header(), seq_read_header(), show_stream(), siff_parse_vbv1(), smacker_read_header(), smjpeg_read_header(), sol_read_header(), str_read_packet(), thp_read_header(), transcode_init(), utvideo_decode_init(), utvideo_encode_init(), v4l2_read_header(), validate_codec_tag(), vc1_decode_init(), vmd_read_header(), voc_write_packet(), vp3_decode_init(), wc3_read_header(), write_streamheader(), wsvqa_read_header(), xmv_read_header(), xsub_encoder_init(), xvid_encode_init(), and xwma_read_header().

Definition at line 1324 of file avcodec.h.

Referenced by add_av_stream(), add_codec(), add_dstream(), add_input_streams(), adts_aac_read_header(), adx_read_header(), aea_read_header(), amr_read_header(), apc_read_header(), ape_read_header(), ape_tag_read_field(), asf_read_header(), asf_read_stream_properties(), asf_write_header1(), asf_write_packet(), au_read_header(), audio_read_header(), av_find_best_stream(), av_find_default_stream_index(), av_interleaved_write_frame(), avcodec_default_free_buffers(), avcodec_default_get_buffer(), avcodec_default_reget_buffer(), avcodec_default_release_buffer(), avcodec_get_context_defaults3(), avcodec_open2(), avcodec_string(), avformat_find_stream_info(), avformat_write_header(), avi_read_header(), avi_read_seek(), avi_sync(), avi_write_counters(), avi_write_header(), avi_write_idx1(), avi_write_ix(), avi_write_packet(), avi_write_trailer(), avisynth_read_header(), avpriv_dv_init_demux(), avs_read_packet(), bfi_read_header(), bmv_read_header(), build_feed_streams(), build_frame_code(), cdata_read_header(), cdxl_read_packet(), celt_header(), check_stream_specifier(), choose_decoder(), choose_encoder(), cin_read_header(), compute_bandwidth(), compute_frame_duration(), compute_pkt_fields2(), compute_status(), configure_simple_filtergraph(), create_audio_stream(), create_stream(), daud_header(), dc1394_read_common(), decode_stream_header(), dfa_read_header(), dirac_header(), do_streamcopy(), do_video_stats(), dshow_add_device(), dump_stream_format(), dv_assemble_frame(), dv_extract_audio_info(), dv_init_mux(), dxa_read_header(), ea_read_header(), fbdev_read_header(), ff_asf_parse_packet(), ff_audio_interleave_close(), ff_audio_interleave_init(), ff_audio_rechunk_interleave(), ff_id3v2_parse_apic(), ff_interleave_compare_dts(), ff_interleave_packet_per_dts(), ff_mov_init_hinting(), ff_mov_read_stsd_entries(), ff_parse_mpeg2_descriptor(), ff_parse_specific_params(), ff_raw_audio_read_header(), ff_raw_read_header(), ff_raw_video_read_header(), ff_read_packet(), ff_rm_parse_packet(), ff_rm_read_mdpr_codecdata(), ff_rtp_get_codec_info(), ff_rtp_get_payload_type(), ffm_read_header(), ffm_write_header(), film_read_header(), flac_header(), flac_read_header(), flic_read_header(), flush_encoders(), flv_read_metabody(), flv_write_header(), flv_write_packet(), flv_write_trailer(), fourxm_read_header(), g723_1_init(), g729_read_header(), get_aiff_header(), get_attachment(), get_bit_rate(), get_decoded_frame(), get_input_stream(), get_sindex(), gif_write_header(), gif_write_packet(), grab_read_header(), gsm_read_header(), gxf_compare_field_nb(), gxf_interleave_packet(), gxf_write_header(), gxf_write_media_preamble(), gxf_write_packet(), handle_file(), has_codec_parameters(), http_prepare_data(), idcin_read_header(), iff_read_header(), iff_read_packet(), init_input_filter(), ipmovie_read_header(), ipod_get_codec_tag(), is_intra_only(), iss_read_header(), ivf_write_header(), jacosub_read_header(), lavfi_read_header(), lmlm4_read_header(), loas_read_header(), lxf_read_header(), m4sl_cb(), matroska_read_header(), microdvd_read_header(), mkv_write_attachments(), mkv_write_codecprivate(), mkv_write_packet(), mkv_write_packet_internal(), mkv_write_tracks(), mmf_read_header(), modplug_read_header(), mov_build_index(), mov_create_chapter_track(), mov_get_codec_tag(), mov_read_hdlr(), mov_read_trak(), mov_read_trun(), mov_write_esds_tag(), mov_write_ftyp_tag(), mov_write_hdlr_tag(), mov_write_header(), mov_write_iods_tag(), mov_write_isml_manifest(), mov_write_minf_tag(), mov_write_packet(), mov_write_stbl_tag(), mov_write_stsd_tag(), mov_write_stts_tag(), mov_write_tfhd_tag(), mov_write_tkhd_tag(), mov_write_trak_tag(), mp3_read_header(), mp4_get_codec_tag(), mpc8_read_header(), mpc_read_header(), mpeg_mux_init(), mpeg_mux_write_packet(), mpegps_read_packet(), mpegts_find_stream_type(), mpegts_read_header(), mpegts_set_stream_info(), mpegts_write_header(), mpegts_write_packet_internal(), mpegts_write_pes(), mpegts_write_pmt(), msnwc_tcp_read_header(), mtv_read_header(), mxf_handle_small_eubc(), mxf_parse_structural_metadata(), mxf_read_packet(), mxf_read_packet_old(), mxf_write_common_fields(), mxf_write_header(), mxf_write_packet(), mxg_read_header(), nc_read_header(), new_audio_stream(), new_output_stream(), new_stream(), new_subtitle_stream(), nsv_parse_NSVs_header(), nut_read_header(), nuv_header(), ogg_read_seek(), ogg_write_header(), ogm_dshow_header(), ogm_header(), old_dirac_header(), old_flac_header(), oma_read_header(), open_input_stream(), opt_map_channel(), opt_output_file(), opt_target(), output_packet(), parse_ffconfig(), parse_packet(), pmp_header(), pmt_cb(), print_report(), pulse_read_header(), pva_read_header(), qcp_read_header(), qt_rtp_parse_packet(), r3d_read_red1(), read_desc_chunk(), read_ffserver_streams(), read_frame(), read_header(), read_packet(), rl2_read_header(), rm_read_audio_stream_info(), rm_read_dts(), rm_read_header(), rm_write_header(), rm_write_packet(), roq_read_packet(), rpl_read_header(), rpl_read_packet(), rso_read_header(), rtp_write_header(), rv10_write_header(), sbg_read_header(), sdl_write_header(), seg_write_header(), seg_write_packet(), seq_read_header(), set_codec_from_probe_data(), show_frame(), show_packet(), show_stream(), siff_parse_vbv1(), skeleton_header(), smacker_read_header(), smjpeg_read_header(), smjpeg_write_header(), smjpeg_write_packet(), sol_read_header(), sox_read_header(), spdif_read_packet(), speex_header(), srt_read_header(), str_read_packet(), stream_component_close(), stream_component_open(), stream_cycle_channel(), swf_read_packet(), swf_write_header(), swf_write_packet(), swf_write_trailer(), theora_header(), thp_read_header(), tmv_read_header(), transcode(), transcode_init(), try_decode_frame(), tta_read_header(), txd_read_header(), update_stream_timings(), v4l2_read_header(), vc1t_read_header(), vfw_read_header(), vid_read_packet(), vmd_read_header(), voc_read_header(), voc_write_header(), vorbis_header(), vqf_read_header(), wc3_read_header(), write_frame(), write_header(), write_stream_codec(), write_stream_codec_info(), write_stream_data(), write_streamheader(), write_timestamp(), wsaud_read_header(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_header(), x11grab_read_header(), xa_read_header(), xmv_read_header(), yop_read_header(), and yuv4_read_header().

the picture in the bitstream

  • encoding: Set by libavcodec.

  • decoding: Set by libavcodec.

Definition at line 2693 of file avcodec.h.

Referenced by a64multi_init_encoder(), aac_decode_init(), aac_encode_close(), aac_encode_end(), aac_encode_init(), aacPlus_encode_close(), aacPlus_encode_init(), ac3_decode_init(), adpcm_decode_init(), adpcm_encode_close(), adpcm_encode_init(), adx_decode_init(), adx_encode_init(), alac_decode_init(), alac_encode_close(), alac_encode_init(), alloc_buffers(), amr_wb_encode_close(), amr_wb_encode_init(), amrnb_decode_init(), amrwb_decode_init(), ape_decode_init(), atrac1_decode_init(), atrac3_decode_init(), avcodec_close(), avcodec_encode_audio(), avcodec_encode_video(), avui_decode_close(), avui_decode_frame(), avui_decode_init(), avui_encode_close(), avui_encode_frame(), avui_encode_init(), bmp_decode_init(), bmp_encode_init(), bmv_aud_decode_init(), cinaudio_decode_init(), common_init(), cook_decode_init(), dca_decode_init(), decode_close(), decode_frame(), decode_init(), decode_init_thread_copy(), decode_slice(), decode_slice_thread(), decoder_init(), dnxhd_decode_init(), dnxhd_encode_init(), do_video_out(), do_video_stats(), dpcm_decode_init(), eightsvx_decode_init(), encode_close(), encode_end(), encode_frame(), encode_init(), encode_init_ls(), Faac_encode_close(), Faac_encode_init(), ff_ac3_encode_close(), ff_ac3_encode_init(), ff_dvvideo_init(), ff_MPV_common_init(), ff_MPV_frame_end(), ff_pnm_init(), filter(), find_quant_thread(), flac_decode_init(), flac_encode_close(), flac_encode_init(), flashsv2_encode_frame(), flashsv_encode_frame(), g722_decode_init(), g722_encode_close(), g722_encode_init(), g723_1_decode_init(), gif_decode_init(), gif_encode_init(), gsm_init(), imc_decode_init(), j2kdec_init(), libcelt_dec_init(), libgsm_decode_init(), libgsm_encode_close(), libgsm_encode_init(), libopenjpeg_decode_init(), libopenjpeg_decode_init_thread_copy(), libopenjpeg_encode_close(), libopenjpeg_encode_init(), libschroedinger_encode_frame(), libschroedinger_encode_init(), libspeex_decode_init(), mace_decode_init(), mdec_common_init(), mlp_decode_init(), mp3lame_encode_close(), mp3lame_encode_init(), MPA_encode_close(), MPA_encode_init(), mpc7_decode_init(), mpc8_decode_init(), oggvorbis_encode_close(), oggvorbis_encode_init(), pcm_bluray_decode_init(), pcm_decode_init(), pcm_encode_close(), pcm_encode_init(), pcx_encode_init(), pcx_init(), png_enc_init(), print_report(), prores_encode_close(), prores_encode_init(), ptx_init(), qcelp_decode_init(), qdm2_decode_init(), qtrle_encode_init(), ra144_decode_init(), ra144_encode_close(), ra144_encode_init(), ra288_decode_init(), raw_decode(), raw_init_decoder(), raw_init_encoder(), roq_dpcm_encode_close(), roq_dpcm_encode_init(), roq_encode_video(), s302m_decode_init(), sgi_init(), shorten_decode_init(), sipr_decoder_init(), smka_decode_init(), sunrast_encode_init(), sunrast_init(), svq1_encode_init(), targa_encode_init(), targa_init(), tiff_init(), truespeech_decode_init(), tta_decode_init(), twin_decode_init(), txd_init(), ulti_decode_init(), update_context_from_thread(), utvideo_decode_close(), utvideo_decode_frame(), utvideo_decode_init(), utvideo_encode_close(), utvideo_encode_frame(), utvideo_encode_init(), v308_decode_close(), v308_decode_frame(), v308_decode_init(), v308_encode_close(), v308_encode_frame(), v308_encode_init(), v408_decode_close(), v408_decode_frame(), v408_decode_init(), v408_encode_close(), v408_encode_frame(), v408_encode_init(), v410_decode_close(), v410_decode_frame(), v410_decode_init(), v410_encode_close(), v410_encode_frame(), v410_encode_init(), v4l2_read_packet(), vble_decode_close(), vble_decode_frame(), vble_decode_init(), vble_restore_plane(), vcr1_common_init(), vmdaudio_decode_init(), vorbis_decode_init(), vorbis_encode_close(), vorbis_encode_init(), vp8_encode(), vp8_free(), vp8_init(), wavesynth_init(), wavpack_decode_init(), wma_decode_init(), wmavoice_decode_init(), write_video_frame(), ws_snd_decode_init(), X264_init(), XAVS_init(), xbm_decode_close(), xbm_decode_frame(), xbm_decode_init(), xbm_encode_close(), xbm_encode_init(), xvid_encode_init(), xwd_decode_close(), xwd_decode_frame(), xwd_decode_init(), xwd_encode_close(), xwd_encode_frame(), xwd_encode_init(), y41p_decode_close(), y41p_decode_frame(), y41p_decode_init(), y41p_encode_close(), y41p_encode_frame(), y41p_encode_init(), yuv4_decode_close(), yuv4_decode_frame(), yuv4_decode_init(), yuv4_encode_close(), yuv4_encode_frame(), yuv4_encode_init(), yuv4_read_packet(), zerocodec_decode_close(), zerocodec_decode_frame(), and zerocodec_decode_init().

coder type

  • encoding: Set by user.

  • decoding: unused

Definition at line 2355 of file avcodec.h.

Referenced by encode_frame(), ffm_read_header(), ffm_write_header(), libschroedinger_encode_init(), read_extra_header(), read_header(), sunrast_encode_init(), targa_encode_frame(), and X264_init().

Chromaticity coordinates of the source primaries.

  • encoding: Set by user
  • decoding: Set by libavcodec

Definition at line 2035 of file avcodec.h.

Referenced by decode_frame_header(), decode_slice_header(), encode_frame(), encode_init(), libschroedinger_encode_init(), mpeg_decode_sequence_display_extension(), parse_source_parameters(), and update_context_from_thread().

MPEG vs JPEG YUV range.

  • encoding: Set by user
  • decoding: Set by libavcodec

Definition at line 2056 of file avcodec.h.

Referenced by decode_slice_header(), ff_mjpeg_decode_sof(), mpeg_decode_init(), parse_source_parameters(), and update_context_from_thread().

attribute_deprecated int AVCodecContext::color_table_id

color table ID

  • encoding: unused
  • decoding: Which clrtable should be used for 8bit RGB images.

Tables have to be stored somewhere. FIXME

Definition at line 1834 of file avcodec.h.

Color Transfer Characteristic.

  • encoding: Set by user
  • decoding: Set by libavcodec

Definition at line 2042 of file avcodec.h.

Referenced by decode_frame_header(), decode_slice_header(), encode_frame(), libschroedinger_encode_init(), mpeg_decode_sequence_display_extension(), parse_source_parameters(), and update_context_from_thread().

YUV colorspace type.

  • encoding: Set by user
  • decoding: Set by libavcodec

Definition at line 2049 of file avcodec.h.

Referenced by decode_frame_header(), decode_slice_header(), encode_frame(), libschroedinger_encode_init(), mpeg_decode_sequence_display_extension(), parse_source_parameters(), and update_context_from_thread().

context model

  • encoding: Set by user.

  • decoding: unused

Definition at line 2362 of file avcodec.h.

Audio cutoff bandwidth (0 means "automatic")

  • encoding: Set by user.

  • decoding: unused

Definition at line 2119 of file avcodec.h.

Referenced by aacPlus_encode_init(), Faac_encode_init(), ff_psy_preprocess_init(), oggvorbis_init_encoder(), psy_3gpp_init(), and validate_options().

darkness masking (0-> disabled)

  • encoding: Set by user.

  • decoding: unused

Definition at line 1669 of file avcodec.h.

Referenced by adaptive_quantization(), ff_MPV_encode_init(), and parse_ffconfig().

DCT algorithm, see FF_DCT_* below

  • encoding: Set by user.

  • decoding: unused

Definition at line 2620 of file avcodec.h.

Referenced by ff_dsputil_init(), ff_dsputil_init_bfin(), ff_dsputil_init_ppc(), ff_dsputilenc_init_mmx(), ff_MPV_common_init_altivec(), ff_MPV_common_init_mmx(), ffm_read_header(), ffm_write_header(), and parse_ffconfig().

debug

  • encoding: Set by user.

  • decoding: Set by user.

Definition at line 2535 of file avcodec.h.

Referenced by audio_get_buffer(), avcodec_default_release_buffer(), decode_chunks(), decode_ext_header(), decode_frame(), decode_init(), decode_nal_units(), decode_picture_timing(), decode_slice_header(), decode_unregistered_user_data(), decode_vol_header(), decode_vop_header(), ff_alloc_picture(), ff_er_frame_end(), ff_flv_decode_picture_header(), ff_h263_decode_frame(), ff_h263_show_pict_info(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_sei(), ff_h264_decode_seq_parameter_set(), ff_h264_execute_ref_pic_marking(), ff_mjpeg_decode_frame(), ff_mjpeg_decode_sos(), ff_mpeg4_decode_picture_header(), ff_msmpeg4_decode_picture_header(), ff_print_debug_info(), ff_rate_estimate_qscale(), ff_thread_await_progress(), ff_thread_release_buffer(), ff_thread_report_progress(), ff_vbv_update(), ff_wmv2_decode_secondary_picture_header(), ffm_read_header(), ffm_write_header(), find_short(), frame_thread_init(), libschroedinger_decode_init(), libschroedinger_encode_init(), mjpeg_decode_app(), mjpeg_decode_com(), mjpegb_decode_frame(), modify_qscale(), mpeg1_decode_picture(), mpeg1_decode_sequence(), mpeg_decode_gop(), mpeg_decode_picture_display_extension(), mpeg_decode_sequence_display_extension(), mpeg_decode_sequence_extension(), mpeg_decode_slice(), MPV_decode_mb_internal(), parse_ffconfig(), pcm_bluray_decode_frame(), pcm_bluray_parse_header(), predict_slice(), predict_slice_buffered(), print_long_term(), print_short_term(), remove_short(), rv10_decode_init(), rv20_decode_picture_header(), svq3_decode_frame(), transcode(), transcode_init(), truemotion1_decode_header(), update_context_from_user(), and video_get_buffer().

debug

  • encoding: Set by user.

  • decoding: Set by user.

Definition at line 2559 of file avcodec.h.

Referenced by ff_alloc_picture(), ff_print_debug_info(), frame_thread_init(), and update_context_from_user().

Encoding: Number of frames delay there will be from the encoder input to the decoder output.

(we assume the decoder matches the spec) Decoding: Number of frames delay in addition to what a standard decoder as specified in the spec would produce.

Video: Number of frames the decoded output will be delayed relative to the encoded input.

Audio: Number of "priming" samples added to the beginning of the stream during encoding. The decoded output will be delayed by this many samples relative to the input to the encoder. Note that this field is purely informational and does not directly affect the pts output by the encoder, which should always be based on the actual presentation time, including any delay.

  • encoding: Set by libavcodec.
  • decoding: Set by libavcodec.

Definition at line 1474 of file avcodec.h.

Referenced by aac_encode_init(), amr_wb_encode_frame(), amr_wb_encode_init(), encode_frame(), encode_init(), encode_superframe(), Faac_encode_init(), ff_ac3_encode_init(), ff_af_queue_init(), ff_MPV_encode_init(), g722_encode_init(), mp3lame_encode_init(), MPA_encode_frame(), MPA_encode_init(), oggvorbis_encode_frame(), ra144_encode_init(), and update_context_from_thread().

ME diamond size & shape

  • encoding: Set by user.

  • decoding: unused

Definition at line 1749 of file avcodec.h.

Referenced by config(), estimate_motion_thread(), ff_init_me(), iterative_me(), and svq1_encode_plane().

void(* AVCodecContext::draw_horiz_band)(struct AVCodecContext *s, const AVFrame *src, int offset[AV_NUM_DATA_POINTERS], int y, int type, int height)

If non NULL, 'draw_horiz_band' is called by the libavcodec decoder to draw a horizontal band.

It improves cache usage. Not all codecs can do that. You must check the codec capabilities beforehand. When multithreading is used, it may be called from multiple threads at the same time; threads might draw different parts of the same AVFrame, or multiple AVFrames, and there is no guarantee that slices will be drawn in order. The function is also used by hardware acceleration APIs. It is called at least once during frame decoding to pass the data needed for hardware render. In that mode instead of pixel data, AVFrame points to a structure specific to the acceleration API. The application reads the structure and can change some fields to indicate progress or mark state.

  • encoding: unused
  • decoding: Set by user.
    Parameters:
    height the height of the slice
    y the y position of the slice
    type 1->top field, 2->bottom field, 3->frame
    offset offset into the AVFrame.data from which the slice should be read

Referenced by ff_draw_horiz_band(), ff_init_block_index(), MPV_decode_mb_internal(), update_context_from_user(), and vp3_draw_horiz_band().

attribute_deprecated unsigned AVCodecContext::dsp_mask

Unused.

Deprecated:
use av_set_cpu_flags_mask() instead.

Definition at line 2664 of file avcodec.h.

Referenced by ff_dsputil_init_ppc(), and main().

DTG active format information (additional aspect ratio information only used in DVB MPEG-2 transport streams) 0 if not set.

  • encoding: unused
  • decoding: Set by decoder.

Definition at line 1794 of file avcodec.h.

Referenced by mpeg_decode_user_data(), and update_context_from_thread().

uint64_t AVCodecContext::error[AV_NUM_DATA_POINTERS]

error

  • encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.

  • decoding: unused

Definition at line 2613 of file avcodec.h.

Referenced by encode_frame(), estimate_best_b_count(), ff_MPV_encode_picture(), and print_report().

error concealment flags

  • encoding: unused
  • decoding: Set by user.

Definition at line 2526 of file avcodec.h.

Referenced by ff_er_frame_end(), guess_mv(), and stream_component_open().

Simulates errors in the bitstream to test error concealment.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2889 of file avcodec.h.

Referenced by encode_thread().

int(* AVCodecContext::execute)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size)

The codec may call this to execute several independent things.

It will return only after finishing all tasks. The user may replace this with some multithreaded implementation, the default implementation will execute the parts serially.

Parameters:
count the number of things to execute
  • encoding: Set by libavcodec, user can override.
  • decoding: Set by libavcodec, user can override.

Referenced by avcodec_get_context_defaults3(), decode_chunks(), decode_component(), decode_frame(), decode_lowdelay(), decode_picture(), dvvideo_decode_frame(), encode_picture(), execute_decode_slices(), and thread_init().

int(* AVCodecContext::execute2)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count)

The codec may call this to execute several independent things.

It will return only after finishing all tasks. The user may replace this with some multithreaded implementation, the default implementation will execute the parts serially. Also see avcodec_thread_init and e.g. the --enable-pthread configure option.

Parameters:
c context passed also to func
count the number of things to execute
arg2 argument passed unchanged to func
ret return values of executed functions, must have space for "count" values. May be NULL.
func function that will be called count times, with jobnr from 0 to count-1. threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no two instances of func executing at the same time will have the same threadnr.
Returns:
always 0 currently, but code should handle a future improvement where when any call to func returns < 0 no further calls to func may be done and < 0 is returned.
  • encoding: Set by libavcodec, user can override.
  • decoding: Set by libavcodec, user can override.

Referenced by avcodec_get_context_defaults3(), decode_picture(), dnxhd_encode_fast(), dnxhd_encode_picture(), dnxhd_encode_rdo(), dnxhd_find_qscale(), encode_frame(), and thread_init().

some codecs need / can use extradata like Huffman tables.

mjpeg: Huffman tables rv10: additional flags mpeg4: global headers (they can be in the bitstream or here) The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger than extradata_size to avoid prolems if it is read with the bitstream reader. The bytewise contents of extradata must not depend on the architecture or CPU endianness.

  • encoding: Set/allocated/freed by libavcodec.
  • decoding: Set/allocated/freed by user.

Definition at line 1431 of file avcodec.h.

Referenced by a64_write_header(), a64_write_packet(), a64multi_encode_frame(), a64multi_init_encoder(), aac_adtstoasc_filter(), aac_decode_frame(), aac_decode_init(), aac_encode_close(), aac_encode_init(), aacPlus_encode_close(), aacPlus_encode_init(), add_av_stream1(), adpcm_decode_init(), adpcm_encode_init(), adts_write_header(), adx_decode_init(), adx_read_header(), aiff_read_header(), alac_encode_close(), alac_encode_init(), alac_set_info(), alloc_buffers(), apc_read_header(), ape_decode_init(), ape_read_header(), ape_tag_read_field(), asf_read_stream_properties(), ass_decode_init(), ass_encode_init(), atrac3_decode_init(), av_mpeg4_decode_header(), av_parser_change(), avcodec_close(), avcodec_copy_context(), avformat_find_stream_info(), avformat_free_context(), avi_read_header(), avisynth_read_header(), avpriv_flac_is_extradata_valid(), avpriv_vorbis_parse_extradata(), avui_decode_frame(), avui_encode_init(), bfi_decode_frame(), bfi_read_header(), caf_write_header(), celt_header(), concatenate_packet(), cook_decode_init(), cook_parse(), decode_chunks(), decode_ext_header(), decode_header_trees(), decode_init(), decode_stream_header(), dshow_add_device(), dump_attachment(), dump_extradata(), dvbsub_init_decoder(), dvdsub_init(), encode_close(), encode_end(), encode_ext_header(), encode_init(), encode_intervals(), extract_header(), extract_mpeg4_header(), Faac_encode_close(), Faac_encode_init(), ff_cmap_read_palette(), ff_h263_decode_frame(), ff_h264_decode_init(), ff_mjpeg_decode_init(), ff_mov_read_stsd_entries(), ff_mov_write_packet(), ff_mp4_read_dec_config_descr(), ff_MPV_encode_end(), ff_parse_mpeg2_descriptor(), ff_rm_read_mdpr_codecdata(), ffm_read_header(), ffm_write_header(), flac_decode_init(), flac_encode_close(), flac_encode_frame(), flac_encode_init(), flac_header(), flac_read_header(), flic_decode_init(), flic_read_header(), flv_get_extradata(), flv_read_packet(), flv_set_video_codec(), flv_write_header(), flv_write_packet(), fourxm_read_header(), get_aac_sample_rates(), get_attachment(), get_codec_data(), get_private_data(), get_video_private_data(), h264_mp4toannexb_filter(), h264_parse(), idcin_decode_init(), idcin_read_header(), iff_read_header(), init(), jacosub_read_header(), jacosub_write_header(), latm_decode_audio_specific_config(), latm_decode_frame(), latm_write_frame_header(), latm_write_header(), libcelt_dec_init(), libspeex_decode_init(), matroska_read_header(), microdvd_read_header(), microdvd_write_header(), mkv_write_attachments(), mkv_write_block(), mkv_write_codecprivate(), mov_read_dvc1(), mov_read_extradata(), mov_read_glbl(), mov_read_smi(), mov_read_strf(), mov_read_wave(), mov_write_extradata_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_subtitle_tag(), mp3_header_compress(), mp3_header_decompress(), mp_decode_frame(), mpc7_decode_init(), mpc8_decode_init(), mpc8_read_header(), mpc_read_header(), mpeg_decode_frame(), mpegts_write_header(), mpegts_write_pmt(), mtv_read_header(), mxf_parse_structural_metadata(), new_stream(), nut_read_header(), ogg_build_speex_headers(), ogg_write_header(), oggvorbis_decode_init(), oggvorbis_encode_close(), oggvorbis_encode_init(), ogm_header(), oma_read_header(), oma_write_header(), opt_output_file(), parse_fmtp_config(), parse_media_type(), parse_mpeg1waveformatex(), parse_packed_headers(), put_audio_specific_config(), put_xiph_codecpriv(), qdm2_decode_init(), qdm2_parse_config(), raw_init_decoder(), read_audio_mux_element(), read_extra_header(), read_gab2_sub(), read_header(), read_kuki_chunk(), read_specific_config(), rl2_decode_init(), rl2_read_header(), rm_read_extradata(), rv10_decode_init(), rv20_decode_picture_header(), rv30_decode_init(), rv30_parse_slice_header(), sdp_parse_fmtp_config_h264(), smacker_read_header(), speex_header(), Stagefright_close(), Stagefright_init(), svq3_decode_init(), svq3_parse_packet(), theora_header(), transcode(), transcode_init(), tta_decode_init(), tta_read_header(), twin_decode_init(), uninit(), utvideo_decode_init(), utvideo_encode_close(), utvideo_encode_init(), vc1_decode_init(), vc1t_read_header(), vc1test_write_header(), vfw_read_header(), vmdvideo_decode_init(), vorbis_decode_init(), vorbis_encode_close(), vorbis_encode_init(), vorbis_header(), vp6_parse_header(), vqa_decode_init(), vqf_read_header(), wavesynth_parse_extradata(), wavpack_decode_init(), wma_decode_init(), wmavoice_decode_init(), wmv2_encode_init(), write_header(), write_packet(), write_streamheader(), write_trailer(), wsvqa_read_header(), wsvqa_read_packet(), X264_close(), X264_init(), XAVS_close(), XAVS_init(), xmv_process_packet_header(), xvid_encode_close(), xvid_encode_init(), xvid_strip_vol_header(), xwma_read_header(), yop_decode_init(), and yop_read_header().

Definition at line 1432 of file avcodec.h.

Referenced by a64multi_init_encoder(), aac_adtstoasc_filter(), aac_decode_frame(), aac_decode_init(), aac_encode_init(), aacPlus_encode_init(), add_av_stream1(), adpcm_decode_init(), adpcm_encode_init(), adts_write_header(), adx_decode_init(), adx_read_header(), aiff_read_header(), alac_decode_init(), alac_encode_close(), alac_encode_init(), alac_set_info(), apc_read_header(), ape_decode_init(), ape_read_header(), ape_tag_read_field(), asf_read_stream_properties(), asf_write_header1(), ass_decode_init(), ass_encode_init(), atrac3_decode_init(), av_mpeg4_decode_header(), av_parser_change(), avcodec_copy_context(), avcodec_open2(), avformat_find_stream_info(), avi_read_header(), avisynth_read_header(), avpriv_flac_is_extradata_valid(), avpriv_vorbis_parse_extradata(), avui_decode_frame(), avui_encode_init(), bfi_decode_frame(), bfi_read_header(), caf_write_header(), celt_header(), concatenate_packet(), cook_decode_init(), cook_parse(), decode_ext_header(), decode_header_trees(), decode_init(), decode_stream_header(), dshow_add_device(), dump_attachment(), dump_extradata(), dvbsub_init_decoder(), dvdsub_init(), encode_close(), encode_ext_header(), encode_init(), encode_intervals(), extract_header(), extract_mpeg4_header(), Faac_encode_init(), ff_cmap_read_palette(), ff_h263_decode_frame(), ff_h264_decode_init(), ff_mjpeg_decode_init(), ff_mov_read_stsd_entries(), ff_mov_write_packet(), ff_mp4_read_dec_config_descr(), ff_parse_mpeg2_descriptor(), ff_rtp_send_aac(), ff_rtp_send_latm(), ffm_read_header(), ffm_write_header(), flac_encode_close(), flac_encode_init(), flac_header(), flac_read_header(), flic_decode_init(), flic_read_header(), flv_get_extradata(), flv_read_packet(), flv_set_video_codec(), flv_write_header(), flv_write_packet(), fourxm_read_header(), get_aac_sample_rates(), get_attachment(), get_codec_data(), get_private_data(), get_video_private_data(), h264_mp4toannexb_filter(), h264_parse(), idcin_decode_init(), idcin_read_header(), iff_read_header(), init(), jacosub_read_header(), jacosub_write_header(), latm_decode_audio_specific_config(), latm_decode_frame(), latm_decode_init(), latm_write_frame_header(), latm_write_header(), libcelt_dec_init(), libspeex_decode_init(), m4sl_cb(), matroska_read_header(), microdvd_read_header(), microdvd_write_header(), mkv_write_attachments(), mkv_write_block(), mkv_write_codecprivate(), mov_read_dvc1(), mov_read_extradata(), mov_read_glbl(), mov_read_smi(), mov_read_strf(), mov_read_wave(), mov_write_extradata_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_subtitle_tag(), mp3_header_compress(), mp3_header_decompress(), mp_decode_init(), mpc7_decode_init(), mpc8_decode_init(), mpc8_read_header(), mpc_read_header(), mpeg_decode_frame(), mpegts_write_header(), mpegts_write_pmt(), mtv_read_header(), mxf_parse_structural_metadata(), new_stream(), nut_read_header(), ogg_build_speex_headers(), ogg_write_header(), oggvorbis_decode_init(), oggvorbis_encode_init(), ogm_header(), oma_read_header(), oma_write_header(), opt_output_file(), parse_fmtp_config(), parse_media_type(), parse_packed_headers(), put_audio_specific_config(), put_xiph_codecpriv(), qdm2_decode_init(), qdm2_parse_config(), raw_init_decoder(), read_extra_header(), read_header(), read_kuki_chunk(), read_packet(), read_specific_config(), rl2_decode_init(), rl2_read_header(), rm_read_audio_stream_info(), rm_read_extradata(), rv10_decode_init(), rv20_decode_picture_header(), rv30_decode_init(), rv30_parse_slice_header(), sdp_parse_fmtp_config_h264(), smacker_read_header(), speex_header(), Stagefright_close(), Stagefright_decode_frame(), Stagefright_init(), svq3_decode_init(), svq3_parse_packet(), theora_header(), transcode_init(), tta_decode_init(), tta_read_header(), twin_decode_init(), uninit(), utvideo_decode_init(), utvideo_encode_init(), vc1_decode_init(), vc1t_read_header(), vfw_read_header(), vmdvideo_decode_init(), vorbis_decode_init(), vorbis_encode_init(), vorbis_header(), vp6_parse_header(), vqa_decode_init(), vqf_read_header(), wavesynth_parse_extradata(), wavpack_decode_init(), wma_decode_init(), wmavoice_decode_init(), wmv2_encode_init(), write_header(), write_packet(), write_streamheader(), write_trailer(), wsvqa_read_header(), wsvqa_read_packet(), X264_init(), XAVS_init(), xmv_process_packet_header(), xvid_encode_init(), xvid_strip_vol_header(), xwma_read_header(), and yop_read_header().

Field order

  • encoding: set by libavcodec
  • decoding: Set by libavcodec.

Definition at line 2078 of file avcodec.h.

Referenced by avui_encode_frame(), avui_encode_init(), ff_mjpeg_decode_init(), mov_read_fiel(), mov_write_fiel_tag(), mov_write_video_tag(), and transcode_init().

CODEC_FLAG_*.

  • encoding: Set by user.
  • decoding: Set by user.

Definition at line 1411 of file avcodec.h.

Referenced by aac_encode_frame(), aac_encode_init(), aacPlus_encode_init(), ac3_decode_init(), add_audio_stream(), add_input_streams(), add_video_stream(), alloc_buffer(), amv_encode_picture(), av_parser_change(), avcodec_string(), avformat_write_header(), common_init(), comp_block(), config(), configure_video_filters(), dct_get(), decode_frame(), decode_init(), decode_slice_thread(), dirac_decode_init(), dnxhd_decode_macroblock(), dnxhd_encode_init(), do_video_out(), do_video_stats(), dsputil_init_3dnow(), dsputil_init_mmx2(), dsputil_init_sse2(), dv_guess_dct_mode(), encode_frame(), encode_init(), encode_q_branch(), encode_slice_data(), estimate_best_b_count(), Faac_encode_init(), ff_ac3_encode_init(), ff_dnxhd_find_cid(), ff_dsputilenc_init_mmx(), ff_float_init_altivec(), ff_fmt_convert_init_altivec(), ff_fmt_convert_init_arm(), ff_fmt_convert_init_x86(), ff_h263_decode_frame(), ff_MPV_common_init(), ff_MPV_encode_init(), ff_proresdsp_x86_init(), ff_rv34_decode_init(), ff_snow_frame_start(), ffm_read_header(), ffm_write_header(), flac_write_header(), get_flags(), h261_decode_frame(), idct_put(), intra_predict(), lame_window_init(), libschroedinger_encode_init(), load_input_picture(), mjpeg_decode_scan(), mkv_write_header(), mov_write_udta_tag(), mp3lame_encode_init(), mpeg_decode_init(), mxf_write_header(), mxf_write_identification(), new_output_stream(), new_video_stream(), ogg_write_header(), oggvorbis_encode_init(), oggvorbis_init_encoder(), parse_ffconfig(), print_report(), remove_extradata(), render_slice(), rv10_decode_frame(), stream_component_open(), svq1_decode_init(), svq1_encode_plane(), svq3_decode_init(), tgq_idct_put_mb(), tgq_idct_put_mb_dconly(), tqi_idct_put(), transcode_init(), unpack_dct_coeffs(), update_context_from_user(), validate_thread_parameters(), vble_decode_frame(), vc1_decode_init(), video_decode_example(), video_get_buffer(), vorbis_encode_init(), vp8_decode_frame(), vp8_encode(), vp8_init(), X264_init(), XAVS_init(), and xvid_encode_init().

number of bits used for the previously encoded frame

  • encoding: Set by libavcodec.

  • decoding: unused

Definition at line 2462 of file avcodec.h.

Referenced by aac_encode_frame(), encode_frame(), and ff_MPV_encode_picture().

frame skip comparison function

  • encoding: Set by user.

  • decoding: unused

Definition at line 2404 of file avcodec.h.

Referenced by add_codec(), ff_MPV_encode_init(), ffm_read_header(), and ffm_write_header().

frame skip exponent

  • encoding: Set by user.

  • decoding: unused

Definition at line 2397 of file avcodec.h.

Referenced by skip_check().

frame skip factor

  • encoding: Set by user.

  • decoding: unused

Definition at line 2390 of file avcodec.h.

Referenced by select_input_picture(), and skip_check().

frame skip threshold

  • encoding: Set by user.

  • decoding: unused

Definition at line 2383 of file avcodec.h.

Referenced by select_input_picture(), skip_check(), and vp8_init().

Called at the beginning of each frame to get a buffer for it.

The function will set AVFrame.data[], AVFrame.linesize[]. AVFrame.extended_data[] must also be set, but it should be the same as AVFrame.data[] except for planar audio with more channels than can fit in AVFrame.data[]. In that case, AVFrame.data[] shall still contain as many data pointers as it can hold.

if CODEC_CAP_DR1 is not set then get_buffer() must call avcodec_default_get_buffer() instead of providing buffers allocated by some other means.

AVFrame.data[] should be 32- or 16-byte-aligned unless the CPU doesn't need it. avcodec_default_get_buffer() aligns the output buffer properly, but if get_buffer() is overridden then alignment considerations should be taken into account.

See also:
avcodec_default_get_buffer()
Video:

If pic.reference is set then the frame will be read later by libavcodec. avcodec_align_dimensions2() should be used to find the required width and height, as they normally need to be rounded up to the next multiple of 16.

If frame multithreading is used and thread_safe_callbacks is set, it may be called from a different thread, but not from more than one at once. Does not need to be reentrant.

See also:
release_buffer(), reget_buffer()

avcodec_align_dimensions2()

Audio:

Decoders request a buffer of a particular size by setting AVFrame.nb_samples prior to calling get_buffer(). The decoder may, however, utilize only part of the buffer by setting AVFrame.nb_samples to a smaller value in the output frame.

Decoders cannot use the buffer after returning from avcodec_decode_audio4(), so they will not call release_buffer(), as it is assumed to be released immediately upon return.

As a convenience, av_samples_get_buffer_size() and av_samples_fill_arrays() in libavutil may be used by custom get_buffer() functions to find the required data size and to fill data pointers and linesize. In AVFrame.linesize, only linesize[0] may be set for audio since all planes must be the same size.

See also:
av_samples_get_buffer_size(), av_samples_fill_arrays()
  • encoding: unused
  • decoding: Set by libavcodec, user can override.

Referenced by aac_decode_frame_int(), ac3_decode_frame(), adpcm_decode_frame(), adx_decode_frame(), alac_decode_frame(), amrnb_decode_frame(), amrwb_decode_frame(), ape_decode_frame(), atrac1_decode_frame(), atrac3_decode_frame(), aura_decode_frame(), avcodec_decode_audio3(), avcodec_default_reget_buffer(), avcodec_get_context_defaults3(), avui_decode_frame(), bfi_decode_frame(), bmp_decode_frame(), bmv_aud_decode_frame(), cdg_decode_frame(), cdxl_decode_frame(), cinaudio_decode_frame(), cmv_decode_frame(), cook_decode_frame(), copy_frame(), cyuv_decode_frame(), dca_decode_frame(), decode_frame(), decode_frame_byterun1(), decode_frame_ilbm(), decode_init(), decode_pic(), decode_tag(), decode_thread(), dfa_decode_frame(), dirac_decode_data_unit(), dirac_decode_picture_header(), dpcm_decode_frame(), dvvideo_decode_frame(), eightsvx_decode_frame(), encode_init(), escape124_decode_frame(), escape130_decode_frame(), execute_code(), ff_ivi_decode_frame(), ff_mjpeg_decode_sof(), ff_snow_frame_start(), ff_thread_can_start_frame(), ff_thread_get_buffer(), ff_vp56_decode_frame(), flac_decode_frame(), frame_worker_thread(), g722_decode_frame(), g723_1_decode_frame(), get_siz(), gif_decode_frame(), gsm_decode_frame(), idcin_decode_frame(), imc_decode_frame(), init_image(), init_input_stream(), ipvideo_decode_frame(), lag_decode_frame(), libcelt_dec_decode(), libgsm_decode_frame(), libschroedinger_decode_frame(), libspeex_decode_frame(), mace_decode_frame(), mca(), mp_decode_frame(), mpc7_decode_frame(), mpc8_decode_frame(), mxpeg_decode_frame(), oggvorbis_decode_frame(), output_data(), pcm_bluray_decode_frame(), pcm_decode_frame(), pcx_decode_frame(), pnm_decode_frame(), ptx_decode_frame(), qcelp_decode_frame(), qdm2_decode_frame(), ra144_decode_frame(), ra288_decode_frame(), rl2_decode_frame(), roq_encode_frame(), s302m_decode_frame(), shorten_decode_frame(), sipr_decode_frame(), smka_decode_frame(), submit_packet(), sunrast_decode_frame(), svq1_encode_frame(), synth_superframe(), tgq_decode_frame(), tmv_decode_frame(), tqi_decode_frame(), truespeech_decode_frame(), tta_decode_frame(), twin_decode_frame(), txd_decode_frame(), update_context_from_user(), v308_decode_frame(), v408_decode_frame(), v410_decode_frame(), vble_decode_frame(), vcr1_decode_frame(), vmdaudio_decode_frame(), vmdvideo_decode_frame(), vorbis_decode_frame(), vqa_decode_frame(), wavesynth_decode(), wavpack_decode_frame(), wma_decode_superframe(), ws_snd_decode_frame(), xan_decode_frame(), xbm_decode_frame(), xwd_decode_frame(), y41p_decode_frame(), yop_decode_frame(), yuv4_decode_frame(), and zerocodec_decode_frame().

callback to negotiate the pixelFormat

Parameters:
fmt is the list of formats which are supported by the codec, it is terminated by -1 as 0 is a valid format, the formats are ordered by quality. The first is always the native one.
Returns:
the chosen format
  • encoding: unused
  • decoding: Set by user, if not set the native format will be chosen.

Referenced by avcodec_get_context_defaults3(), decode_init(), decode_slice_header(), ff_h263_decode_init(), mpeg_get_pixelformat(), and vc1_decode_init().

Global quality for codecs which cannot change it per frame.

This should be proportional to MPEG-1/2/4 qscale.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1397 of file avcodec.h.

Referenced by a64multi_init_encoder(), aac_encode_init(), config(), encode_init(), Faac_encode_init(), lame_window_init(), libopenjpeg_encode_init(), libschroedinger_encode_init(), mp3lame_encode_init(), new_output_stream(), oggvorbis_init_encoder(), optimum_use15_7(), parse_ffconfig(), poll_filters(), and vorbis_encode_init().

Definition at line 2449 of file avcodec.h.

Referenced by ff_MPV_encode_picture().

Definition at line 1485 of file avcodec.h.

Referenced by a64multi_encode_frame(), aasc_decode_frame(), add_av_stream(), add_codec(), add_input_streams(), add_video_stream(), alloc_buffer(), apply_param_change(), asf_read_stream_properties(), asf_write_header1(), aura_decode_frame(), av_mpeg4_decode_header(), avcodec_decode_video2(), avcodec_default_reget_buffer(), avcodec_encode_video2(), avcodec_open2(), avcodec_set_dimensions(), avcodec_string(), avformat_write_header(), avi_read_header(), avi_write_header(), avisynth_read_header(), avpriv_dv_codec_profile(), avs_read_packet(), avui_decode_frame(), avui_encode_frame(), avui_encode_init(), bethsoftvid_decode_frame(), bfi_decode_frame(), bfi_decode_init(), bfi_read_header(), bink_decode_plane(), binkb_decode_plane(), bitline2chunky(), bitplanar2chunky(), bmp_decode_frame(), bmp_encode_frame(), bmv_read_header(), cdg_decode_init(), cdxl_decode_frame(), cdxl_decode_ham6(), cdxl_decode_ham8(), cdxl_read_packet(), cin_read_header(), cinepak_decode_init(), cinvideo_decode_frame(), cinvideo_decode_init(), cmv_decode_inter(), cmv_decode_intra(), cmv_process_header(), codec_get_buffer(), codec_reinit(), common_init(), compute_status(), config(), configure_complex_filter(), configure_output_video_filter(), configure_video_filters(), CustomSource::CustomSource(), cyuv_decode_init(), dc1394_read_common(), decode_13(), decode_frame(), decode_frame_byterun1(), decode_frame_header(), decode_frame_ilbm(), decode_header(), decode_i2_frame(), decode_i_frame(), decode_init(), decode_p_block(), decode_p_frame(), decode_picture_header(), decode_seq_header(), decode_sequence_header_adv(), decode_slice_header(), decode_stream_header(), decode_thread(), decode_video(), dfa_decode_frame(), dfa_decode_init(), dfa_read_header(), dnxhd_decode_frame(), dnxhd_encode_init(), dnxhd_get_blocks(), dnxhd_write_header(), do_streamcopy(), do_video_stats(), draw_char(), dshow_add_device(), dump_stream_format(), dv_write_pack(), dvvideo_init_encoder(), dxa_read_header(), ea_read_header(), encode_frame(), encode_init(), encode_picture_ls(), encode_rgb48_10bit(), encode_slice(), erase_screen(), escape124_decode_init(), escape130_decode_frame(), escape130_decode_init(), estimate_best_b_count(), execute_code(), fbdev_read_header(), ff_create_schro_frame(), ff_dnxhd_find_cid(), ff_draw_horiz_band(), ff_dxva2_common_end_frame(), ff_init_buffer_info(), ff_mov_read_stsd_entries(), ff_mpeg_update_thread_context(), ff_MPV_encode_init(), ff_MPV_frame_start(), ff_pnm_decode_header(), ff_print_debug_info(), ff_raw_read_header(), ff_rm_read_mdpr_codecdata(), ff_rv34_decode_init(), ff_sauce_read(), ff_snow_alloc_blocks(), ff_snow_common_init_after_header(), ff_snow_frame_start(), ff_vaapi_common_end_frame(), ff_vdpau_h264_picture_complete(), ff_vdpau_mpeg4_decode_picture(), ff_vdpau_mpeg_picture_complete(), ff_vdpau_vc1_decode_picture(), ffm_read_header(), ffm_write_header(), fill_picture_parameters(), film_read_header(), find_slice_quant(), find_stream_in_feed(), flashsv2_encode_init(), flashsv_decode_frame(), flashsv_encode_init(), flic_decode_frame_15_16BPP(), flic_decode_frame_8BPP(), flic_read_header(), flip(), fourxm_read_header(), get_logical_cpus(), get_siz(), get_video_format_idx(), gif_encode_frame(), gif_encode_init(), gif_image_write_header(), gif_image_write_image(), gif_write_header(), gif_write_video(), grab_read_header(), gxf_find_lines_index(), gxf_write_header(), gxf_write_mpeg_auxiliary(), halfpel_interpol(), handle_file(), hscroll(), idcin_decode_vlcs(), idcin_read_header(), iff_read_header(), import_format(), init(), init_bundles(), init_filters(), init_image(), init_slice_contexts(), ipmovie_read_header(), ipvideo_decode_frame(), ipvideo_decode_opcodes(), ir2_decode_frame(), ivf_write_header(), j2kenc_init(), lag_decode_frame(), lavfi_read_header(), libopenjpeg_copy_packed16(), libopenjpeg_copy_packed8(), libopenjpeg_copy_unpacked16(), libopenjpeg_copy_unpacked8(), libopenjpeg_encode_frame(), libschroedinger_encode_init(), libschroedinger_frame_from_data(), libschroedinger_handle_first_access_unit(), matroska_read_header(), mca(), mimic_decode_frame(), mj2_create_image(), mkv_write_tracks(), mm_decode_inter(), mm_decode_intra(), modplug_read_header(), mov_get_dv_codec_tag(), mov_read_trak(), mov_write_avid_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_tapt_tag(), mov_write_tkhd_tag(), mov_write_uuidprof_tag(), mp_decode_frame(), mp_decode_frame_helper(), mp_decode_init(), mp_read_changes_map(), mpegvideo_extract_headers(), msrle_decode_8_16_24_32(), msrle_decode_frame(), msrle_decode_pal4(), msvideo1_decode_16bit(), msvideo1_decode_8bit(), mtv_read_header(), mxf_parse_mpeg2_frame(), mxf_parse_structural_metadata(), mxf_write_cdci_common(), new_video_stream(), nsv_parse_NSVs_header(), nut_read_header(), nuv_header(), ogm_dshow_header(), ogm_header(), open_video(), opt_output_file(), pam_encode_frame(), parse_ffconfig(), parse_h264_sdp_line(), parse_picture_segment(), parse_presentation_segment(), pcx_decode_frame(), pcx_encode_frame(), pmp_header(), pnm_decode_frame(), pnm_encode_frame(), pnm_parse(), pre_process_video_frame(), prepare_avpic(), print_report(), prores_encode_frame(), prores_encode_init(), prores_encode_picture(), ptx_decode_frame(), qtrle_decode_16bpp(), qtrle_decode_1bpp(), qtrle_decode_24bpp(), qtrle_decode_2n4bpp(), qtrle_decode_32bpp(), qtrle_decode_8bpp(), qtrle_decode_frame(), qtrle_encode_frame(), qtrle_encode_init(), r3d_read_red1(), raw_decode(), raw_encode(), raw_init_decoder(), rawvideo_read_packet(), read_frame(), read_header(), read_packet(), read_seek(), receive_frame(), rl2_decode_init(), rl2_read_header(), rl2_rle_decode(), roq_decode_frame(), roq_decode_init(), roq_encode_init(), roq_read_packet(), rpl_read_header(), rpza_decode_stream(), rv10_write_header(), sdl_write_header(), sdl_write_packet(), seq_read_header(), show_stream(), siff_parse_vbv1(), smacker_read_header(), smc_decode_stream(), smjpeg_write_header(), sp5x_decode_frame(), Stagefright_init(), str_read_packet(), sunrast_decode_frame(), sunrast_encode_init(), sunrast_image_write_header(), sunrast_image_write_image(), svq1_decode_init(), svq1_encode_end(), svq1_encode_init(), svq3_decode_init(), swf_write_header(), swf_write_video(), targa_encode_frame(), tgq_decode_frame(), tgv_decode_frame(), tgv_decode_inter(), theora_header(), thp_read_header(), tiff_decode_tag(), tm2_decode_blocks(), tm2_motion_block(), tmv_decode_frame(), tmv_read_header(), to_meta_with_crop(), tqi_decode_frame(), transcode_init(), truemotion1_decode_16bit(), truemotion1_decode_24bit(), truemotion1_decode_header(), txd_decode_frame(), ulti_decode_init(), update_context_from_thread(), update_dimensions(), utvideo_decode_frame(), utvideo_decode_init(), utvideo_encode_frame(), utvideo_encode_init(), v308_decode_frame(), v308_encode_frame(), v408_decode_frame(), v408_encode_frame(), v410_decode_frame(), v410_encode_frame(), v4l2_read_header(), vb_decode_framedata(), vble_decode_frame(), vble_decode_init(), vc1_decode_frame(), vc1_decode_init(), vc1t_read_header(), vc1test_write_header(), vcr1_decode_frame(), vfw_read_header(), video_decode_example(), video_encode_example(), video_get_buffer(), video_thread(), vmd_decode(), vp3_decode_init(), vp3_draw_horiz_band(), vp6_parse_header(), vp8_decode(), vp8_init(), wc3_read_header(), write_packet(), write_streamheader(), write_trailer(), write_video_frame(), wsvqa_read_header(), x11grab_read_header(), X264_init(), xan_decode_chroma(), xan_decode_frame(), xan_decode_frame_type0(), xan_decode_frame_type1(), xan_decode_init(), xan_wc3_copy_pixel_run(), xan_wc3_decode_frame(), XAVS_init(), xbm_decode_frame(), xbm_encode_frame(), xiph_parse_fmtp_pair(), xmv_read_header(), xvid_encode_frame(), xvid_encode_init(), xwd_decode_frame(), xwd_encode_frame(), y41p_decode_frame(), y41p_encode_frame(), yop_decode_frame(), yop_decode_init(), yop_read_header(), yuv4_decode_frame(), yuv4_encode_frame(), yuv4_read_header(), yuv4_read_packet(), zerocodec_decode_frame(), zerocodec_decode_init(), and zmbv_me().

Hardware accelerator context.

For some hardware accelerators, a global context needs to be provided by the user. In that case, this holds display-dependent data FFmpeg cannot instantiate itself. Please refer to the FFmpeg HW accelerator documentation to know how to fill this is. e.g. for VA API, this is a struct vaapi_context.

  • encoding: unused
  • decoding: Set by user

Definition at line 2606 of file avcodec.h.

Referenced by commit_bitstream_and_slice_buffer(), decode_slice(), end_frame(), ff_dxva2_common_end_frame(), ff_vaapi_common_end_frame(), fill_slice_long(), start_frame(), vaapi_mpeg2_decode_slice(), vaapi_mpeg2_start_frame(), vaapi_mpeg4_decode_slice(), vaapi_mpeg4_start_frame(), vaapi_vc1_decode_slice(), and vaapi_vc1_start_frame().

Definition at line 2452 of file avcodec.h.

Referenced by ff_MPV_encode_picture().

qscale factor between P and I-frames If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).

If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).

  • encoding: Set by user.
  • decoding: unused

Definition at line 1627 of file avcodec.h.

Referenced by add_codec(), ffm_read_header(), ffm_write_header(), get_diff_limited_q(), get_qminmax(), get_qscale(), X264_init(), and XAVS_init().

qscale offset between P and I-frames

  • encoding: Set by user.

  • decoding: unused

Definition at line 1634 of file avcodec.h.

Referenced by ffm_read_header(), ffm_write_header(), get_diff_limited_q(), get_qminmax(), and get_qscale().

Definition at line 2450 of file avcodec.h.

Referenced by ff_MPV_encode_picture().

interlaced DCT comparison function

  • encoding: Set by user.

  • decoding: unused

Definition at line 1726 of file avcodec.h.

Referenced by encode_mb_internal(), ff_dvvideo_init(), and ff_MPV_encode_init().

custom inter quantization matrix

  • encoding: Set by user, can be NULL.

  • decoding: Set by libavcodec.

Definition at line 1876 of file avcodec.h.

Referenced by avcodec_copy_context(), ff_MPV_encode_init(), mpeg1_encode_sequence_header(), mpeg4_encode_vol_header(), new_video_stream(), and xvid_encode_init().

inter quantizer bias

  • encoding: Set by user.

  • decoding: unused

Definition at line 1825 of file avcodec.h.

Referenced by ff_MPV_encode_init().

attribute_deprecated int AVCodecContext::inter_threshold

Deprecated:
this field is unused

Definition at line 1897 of file avcodec.h.

precision of the intra DC coefficient - 8

  • encoding: Set by user.

  • decoding: unused

Definition at line 1928 of file avcodec.h.

Referenced by ff_MPV_encode_init(), ffm_read_header(), ffm_write_header(), and new_video_stream().

custom intra quantization matrix

  • encoding: Set by user, can be NULL.

  • decoding: Set by libavcodec.

Definition at line 1869 of file avcodec.h.

Referenced by avcodec_copy_context(), ff_MPV_encode_init(), mpeg1_encode_sequence_header(), mpeg4_encode_vol_header(), new_video_stream(), and xvid_encode_init().

intra quantizer bias

  • encoding: Set by user.

  • decoding: unused

Definition at line 1817 of file avcodec.h.

Referenced by dnxhd_encode_init(), and ff_MPV_encode_init().

minimum GOP size

  • encoding: Set by user.

  • decoding: unused

Definition at line 1992 of file avcodec.h.

Referenced by encode_frame(), encode_init(), ffm_read_header(), ffm_write_header(), flashsv2_encode_frame(), vp8_init(), X264_init(), and XAVS_init().

amount of previous MV predictors (2a+1 x 2a+1 square)

  • encoding: Set by user.

  • decoding: unused

Definition at line 1756 of file avcodec.h.

Referenced by epzs_motion_search_internal().

maximum Lagrange multipler

  • encoding: Set by user.

  • decoding: unused

Definition at line 2376 of file avcodec.h.

Referenced by ff_MPV_encode_picture(), and get_qminmax().

minimum Lagrange multipler

  • encoding: Set by user.

  • decoding: unused

Definition at line 2369 of file avcodec.h.

Referenced by get_qminmax().

Definition at line 1322 of file avcodec.h.

attribute_deprecated int AVCodecContext::luma_elim_threshold

luma single coefficient elimination threshold

  • encoding: Set by user.

  • decoding: unused

Definition at line 1588 of file avcodec.h.

Referenced by ff_MPV_encode_init(), and parse_ffconfig().

luminance masking (0-> disabled)

  • encoding: Set by user.

  • decoding: unused

Definition at line 1641 of file avcodec.h.

Referenced by adaptive_quantization(), ff_MPV_encode_init(), parse_ffconfig(), and xvid_encode_init().

maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 relative to the input.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1565 of file avcodec.h.

Referenced by add_video_stream(), compute_pkt_fields2(), config(), decode_sequence_header_adv(), estimate_best_b_count(), ff_MPV_encode_init(), ff_vc1_decode_sequence_header(), ff_vc1_parse_frame_header(), ffm_read_header(), ffm_write_header(), vaapi_vc1_start_frame(), vc1_decode_init(), video_encode_example(), X264_init(), XAVS_frame(), XAVS_init(), and xvid_encode_init().

  • encoding: Set by user.

  • decoding: unused

Definition at line 2423 of file avcodec.h.

Referenced by alac_encode_init(), and flac_encode_init().

maximum quantizer difference between frames

  • encoding: Set by user.

  • decoding: unused

Definition at line 2266 of file avcodec.h.

Referenced by add_codec(), ffm_read_header(), ffm_write_header(), get_diff_limited_q(), parse_ffconfig(), X264_init(), and XAVS_init().

macroblock comparison function (not supported yet)

  • encoding: Set by user.

  • decoding: unused

Definition at line 1720 of file avcodec.h.

Referenced by check_bidir_mv(), config(), direct_search(), encode_q_branch(), estimate_best_b_count(), ff_estimate_motion_b(), ff_estimate_p_frame_motion(), ff_init_me(), h263_mv4_search(), interlaced_search(), and sse_mb().

maximum MB lagrange multipler

  • encoding: Set by user.

  • decoding: unused

Definition at line 1964 of file avcodec.h.

Referenced by adaptive_quantization().

minimum MB lagrange multipler

  • encoding: Set by user.

  • decoding: unused

Definition at line 1957 of file avcodec.h.

Referenced by adaptive_quantization().

Macroblock threshold below which the user specified macroblock types will be used.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1921 of file avcodec.h.

Referenced by ff_estimate_b_frame_motion(), ff_estimate_p_frame_motion(), ff_MPV_encode_init(), and vp8_init().

Motion estimation algorithm used for video coding.

1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex), 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]

  • encoding: MUST be set by user.
  • decoding: unused

Definition at line 1519 of file avcodec.h.

Referenced by add_codec(), config(), encode_blocks(), encode_frame(), encode_init(), ff_MPV_encode_init(), ffm_read_header(), ffm_write_header(), svq1_encode_plane(), X264_init(), XAVS_init(), and xvid_encode_init().

  • encoding: Set by user.

  • decoding: unused

Definition at line 1971 of file avcodec.h.

Referenced by encode_picture().

motion estimation prepass comparison function

  • encoding: Set by user.

  • decoding: unused

Definition at line 1770 of file avcodec.h.

Referenced by ff_init_me(), and ff_pre_estimate_p_frame_motion().

maximum motion estimation search range in subpel units If 0 then no limit.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1810 of file avcodec.h.

Referenced by encode_init(), ff_fix_long_mvs(), ff_fix_long_p_mvs(), ff_get_best_fcode(), ffm_read_header(), ffm_write_header(), get_limits(), mpeg1_encode_sequence_header(), X264_init(), and XAVS_init().

subpixel motion estimation comparison function

  • encoding: Set by user.

  • decoding: unused

Definition at line 1714 of file avcodec.h.

Referenced by config(), direct_search(), encode_init(), encode_q_branch(), estimate_best_b_count(), ff_estimate_motion_b(), ff_estimate_p_frame_motion(), ff_init_me(), filter(), hpel_motion_search(), and qpel_motion_search().

subpel ME quality

  • encoding: Set by user.

  • decoding: unused

Definition at line 1784 of file avcodec.h.

Referenced by ffm_read_header(), ffm_write_header(), qpel_motion_search(), X264_init(), and XAVS_init().

Motion estimation threshold below which no motion estimation is performed, but instead the user specified motion vectors are used.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1914 of file avcodec.h.

Referenced by copy_picture_attributes(), do_video_out(), encode_picture(), ff_estimate_b_frame_motion(), ff_estimate_p_frame_motion(), ff_MPV_encode_init(), and transcode_init().

  • encoding: Set by user.

  • decoding: unused

Definition at line 2417 of file avcodec.h.

Referenced by alac_encode_init(), and flac_encode_init().

Definition at line 2455 of file avcodec.h.

Referenced by encode_frame(), and ff_MPV_encode_picture().

0-> h263 quant 1-> mpeg quant

  • encoding: Set by user.

  • decoding: unused

Definition at line 1618 of file avcodec.h.

Referenced by ff_MPV_encode_init(), ffm_read_header(), ffm_write_header(), and xvid_encode_init().

Note: Value depends upon the compare function used for fullpel ME.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2021 of file avcodec.h.

Referenced by epzs_motion_search_internal().

Definition at line 2448 of file avcodec.h.

Referenced by encode_frame(), and ff_MPV_encode_picture().

noise reduction strength

  • encoding: Set by user.

  • decoding: unused

Definition at line 1891 of file avcodec.h.

Referenced by ff_MPV_common_init(), ff_MPV_frame_start(), init_duplicate_context(), merge_context_after_encode(), update_noise_reduction(), vp8_init(), X264_init(), and XAVS_init().

noise vs.

sse weight for the nsse comparsion function

  • encoding: Set by user.
  • decoding: unused

Definition at line 2776 of file avcodec.h.

Referenced by add_codec(), ffm_read_header(), ffm_write_header(), nsse16_c(), nsse16_mmx(), nsse8_c(), and nsse8_mmx().

Private data of the user, can be used to carry app specific stuff.

  • encoding: Set by user.
  • decoding: Set by user.

Definition at line 1374 of file avcodec.h.

Referenced by codec_get_buffer(), codec_release_buffer(), init_input_stream(), and update_context_from_user().

Definition at line 2453 of file avcodec.h.

Referenced by ff_MPV_encode_picture().

p block masking (0-> disabled)

  • encoding: Set by user.

  • decoding: unused

Definition at line 1662 of file avcodec.h.

Referenced by adaptive_quantization(), and ff_MPV_encode_init().

Definition at line 2451 of file avcodec.h.

Referenced by encode_frame(), and ff_MPV_encode_picture().

Pixel format, see PIX_FMT_xxx.

May be set by the demuxer if known from headers. May be overriden by the decoder if it knows better.

  • encoding: Set by user.
  • decoding: Set by user if known, overridden by libavcodec if known

Definition at line 1510 of file avcodec.h.

Referenced by aasc_decode_init(), add_input_streams(), add_video_stream(), alloc_buffer(), aura_decode_init(), avcodec_align_dimensions(), avcodec_align_dimensions2(), avcodec_decode_video2(), avcodec_default_reget_buffer(), avcodec_get_context_defaults3(), avcodec_open2(), avcodec_string(), avpriv_dv_codec_profile(), avs_decode_init(), avui_decode_init(), bethsoftvid_decode_init(), bfi_decode_init(), bfi_read_header(), bmp_decode_frame(), bmp_encode_frame(), bmp_encode_init(), bmv_read_header(), cdg_decode_init(), cdxl_decode_frame(), choose_pix_fmts(), cinepak_decode_init(), cinvideo_decode_init(), cmv_decode_init(), codec_get_buffer(), config(), configure_complex_filter(), configure_video_filters(), copy_frame(), cyuv_decode_init(), dc1394_read_common(), decode_frame(), decode_frame_byterun1(), decode_frame_header(), decode_frame_ilbm(), decode_init(), decode_plane(), decode_slice_header(), decode_slice_thread(), decode_thread(), decode_video(), dfa_decode_init(), dirac_decode_data_unit(), dnxhd_decode_header(), dnxhd_encode_init(), do_streamcopy(), dshow_add_device(), dvvideo_decode_frame(), dvvideo_init_encoder(), encode_frame(), encode_init(), encode_init_ls(), encode_picture_lossless(), encode_picture_ls(), encode_rgb48_10bit(), escape124_decode_init(), escape130_decode_init(), estimate_best_b_count(), extract_header(), fbdev_read_header(), ff_cavs_init(), ff_create_schro_frame(), ff_draw_horiz_band(), ff_h263_decode_init(), ff_init_buffer_info(), ff_mjpeg_decode_frame(), ff_mjpeg_decode_sof(), ff_mjpeg_decode_sos(), ff_mjpeg_encode_picture_header(), ff_MPV_common_init(), ff_MPV_encode_init(), ff_MPV_frame_end(), ff_pnm_decode_header(), ff_print_debug_info(), ff_raw_read_header(), ff_rv34_decode_init(), ff_vp56_init(), ffm_read_header(), ffm_write_header(), film_read_header(), flashsv_decode_init(), flic_decode_frame(), flic_decode_init(), get_siz(), gif_decode_frame(), gif_write_header(), grab_read_header(), gxf_write_header(), gxf_write_mpeg_auxiliary(), gxf_write_umf_media_mpeg(), h261_decode_init(), has_codec_parameters(), idcin_decode_init(), iff_read_header(), init(), init_decoder(), init_filters(), init_image(), ipvideo_decode_init(), ir2_decode_init(), j2kenc_init(), jpeg_put_comments(), lag_decode_arith_plane(), lag_decode_frame(), lag_pred_line(), lavfi_read_header(), libopenjpeg_decode_frame(), libopenjpeg_encode_frame(), libschroedinger_encode_init(), libschroedinger_frame_from_data(), libschroedinger_handle_first_access_unit(), load_input_picture(), mimic_decode_frame(), mj2_create_image(), mm_decode_init(), mov_get_dv_codec_tag(), mov_get_rawvideo_codec_tag(), mp_decode_init(), msrle_decode_init(), msvideo1_decode_8bit(), msvideo1_decode_init(), mtv_read_header(), mxf_parse_structural_metadata(), new_video_stream(), open_video(), pam_encode_frame(), parse_h264_sdp_line(), parse_source_parameters(), pcx_decode_frame(), pcx_encode_frame(), png_enc_init(), pnm_decode_frame(), pnm_encode_frame(), pnm_parse(), pre_process_video_frame(), prores_encode_init(), ptx_decode_frame(), put_cod(), qtrle_decode_init(), qtrle_encode_frame(), qtrle_encode_init(), qtrle_encode_line(), raw_decode(), raw_encode(), raw_init_decoder(), raw_init_encoder(), rawvideo_read_packet(), read_ffserver_streams(), read_header(), rl2_decode_init(), roq_decode_frame(), roq_decode_init(), rpza_decode_init(), rv10_decode_init(), sdl_write_header(), sdl_write_packet(), seqvideo_decode_init(), set_chroma_format(), show_stream(), siff_parse_vbv1(), smacker_read_header(), smc_decode_init(), Stagefright_init(), sunrast_decode_frame(), sunrast_encode_init(), svq1_decode_init(), svq1_encode_frame(), svq3_decode_init(), targa_encode_frame(), tgq_decode_init(), tgv_decode_init(), tiff_unpack_strip(), tmv_decode_init(), tmv_read_header(), tqi_decode_init(), transcode_init(), truemotion1_decode_header(), txd_decode_frame(), ulti_decode_init(), update_context_from_thread(), uses_vdpau(), utvideo_decode_frame(), utvideo_decode_init(), utvideo_encode_frame(), utvideo_encode_init(), v308_decode_init(), v408_decode_init(), v410_decode_init(), v4l2_read_header(), vble_decode_init(), vc1_decode_frame(), vc1_decode_init(), vcr1_decode_init(), vcr2_init_sequence(), vfw_read_header(), video_encode_example(), video_get_buffer(), vmdvideo_decode_init(), vp3_decode_init(), vp8_decode_init(), vp8_init(), vqa_decode_init(), write_header(), write_video_frame(), x11grab_read_header(), X264_frame(), X264_init(), xan_decode_init(), xbm_decode_frame(), xiph_parse_fmtp_pair(), xvid_encode_frame(), xwd_decode_frame(), xwd_encode_frame(), y41p_decode_init(), yop_decode_init(), yuv4_decode_init(), yuv4_read_header(), yuv4_read_packet(), and zerocodec_decode_init().

Current packet as passed into the decoder, to avoid having to pass the packet into every function.

Currently only valid inside lavc and get/release_buffer callbacks.

  • decoding: set by avcodec_decode_*, read by get_buffer() for setting pkt_pts
  • encoding: unused

Definition at line 2898 of file avcodec.h.

Referenced by audio_get_buffer(), avcodec_decode_audio4(), avcodec_decode_subtitle2(), avcodec_decode_video2(), codec_get_buffer(), decode(), ff_init_buffer_info(), frame_thread_init(), raw_decode(), and video_get_buffer().

ME prepass diamond size & shape

  • encoding: Set by user.

  • decoding: unused

Definition at line 1777 of file avcodec.h.

Referenced by ff_init_me(), and pre_estimate_motion_thread().

prepass for motion estimation

  • encoding: Set by user.

  • decoding: unused

Definition at line 1763 of file avcodec.h.

Referenced by encode_picture().

prediction method (needed for huffyuv)

  • encoding: Set by user.

  • decoding: unused

Definition at line 1682 of file avcodec.h.

Referenced by encode_init(), encode_picture_lossless(), encode_picture_ls(), ff_mjpeg_encode_picture_header(), png_enc_init(), and utvideo_encode_init().

Definition at line 1359 of file avcodec.h.

Referenced by a64multi_close_encoder(), a64multi_encode_frame(), a64multi_init_encoder(), aac_decode_close(), aac_decode_frame(), aac_decode_frame_int(), aac_decode_init(), aac_encode_close(), aac_encode_end(), aac_encode_frame(), aac_encode_init(), aacPlus_encode_close(), aacPlus_encode_frame(), aacPlus_encode_init(), aasc_decode_end(), aasc_decode_frame(), aasc_decode_init(), ac3_decode_end(), ac3_decode_frame(), ac3_decode_init(), ac3_fixed_encode_init(), adpcm_compress_trellis(), adpcm_decode_frame(), adpcm_decode_init(), adpcm_encode_close(), adpcm_encode_init(), adpcm_swf_decode(), adx_decode_flush(), adx_decode_frame(), adx_decode_init(), adx_encode_frame(), adx_encode_header(), adx_encode_init(), alac_decode_close(), alac_decode_frame(), alac_decode_init(), alac_encode_close(), alac_encode_frame(), alac_encode_init(), allocate_tables(), amr_wb_encode_close(), amr_wb_encode_frame(), amr_wb_encode_init(), amrnb_decode_frame(), amrnb_decode_init(), amrwb_decode_frame(), amrwb_decode_init(), amv_encode_picture(), ape_decode_close(), ape_decode_frame(), ape_decode_init(), ape_flush(), apply_window_and_mdct(), ass_decode_close(), ass_decode_frame(), ass_decode_init(), atrac1_decode_end(), atrac1_decode_frame(), atrac1_decode_init(), atrac3_decode_close(), atrac3_decode_frame(), atrac3_decode_init(), aura_decode_end(), aura_decode_frame(), aura_decode_init(), avcodec_close(), avcodec_copy_context(), avcodec_get_context_defaults3(), avcodec_open2(), avs_decode_end(), avs_decode_frame(), avs_decode_init(), bethsoftvid_decode_end(), bethsoftvid_decode_frame(), bethsoftvid_decode_init(), bfi_decode_close(), bfi_decode_frame(), bfi_decode_init(), bmp_decode_end(), bmp_decode_frame(), bmp_decode_init(), bmp_encode_frame(), bmp_encode_init(), bmv_aud_decode_frame(), bmv_aud_decode_init(), cavs_decode_frame(), cavs_flush(), cdg_decode_end(), cdg_decode_frame(), cdg_decode_init(), cdxl_decode_end(), cdxl_decode_frame(), cdxl_decode_init(), cinaudio_decode_frame(), cinaudio_decode_init(), cinepak_decode_end(), cinepak_decode_frame(), cinepak_decode_init(), cinvideo_decode_end(), cinvideo_decode_frame(), cinvideo_decode_init(), close_decoder(), cmv_decode_end(), cmv_decode_frame(), cmv_decode_init(), codec_child_next(), codec_reinit(), codecctl_int(), commit_bitstream_and_slice_buffer(), common_end(), common_init(), cook_decode_close(), cook_decode_frame(), cook_decode_init(), copy_frame(), CustomSource::CustomSource(), cyuv_decode_end(), cyuv_decode_frame(), cyuv_decode_init(), dca_decode_end(), dca_decode_frame(), dca_decode_init(), decode(), decode_ac_coeffs(), decode_block(), decode_chunks(), decode_close(), decode_end(), decode_flush(), decode_frame(), decode_frame_byterun1(), decode_frame_ilbm(), decode_init(), decode_init_thread_copy(), decode_lowdelay_slice(), decode_packet(), decode_picture(), decode_picture_header(), decode_slice(), decode_slice_chroma(), decode_slice_luma(), decode_slice_thread(), decode_subband_arith(), decode_subband_golomb(), decode_tag(), decode_thread(), decode_update_thread_context(), decoder_init(), determine_bitrate(), dfa_decode_end(), dfa_decode_frame(), dfa_decode_init(), dirac_decode_data_unit(), dirac_decode_flush(), dirac_decode_frame(), dirac_decode_init(), display_end_segment(), dnxhd_calc_bits_thread(), dnxhd_decode_close(), dnxhd_decode_frame(), dnxhd_decode_init(), dnxhd_encode_end(), dnxhd_encode_init(), dnxhd_encode_picture(), dnxhd_encode_thread(), dnxhd_mb_var_thread(), dnxhd_write_header(), dpcm_decode_frame(), dpcm_decode_init(), draw_char(), dv_decode_video_segment(), dv_encode_video_segment(), dvbsub_close_decoder(), dvbsub_decode(), dvbsub_display_end_segment(), dvbsub_encode(), dvbsub_init_decoder(), dvbsub_parse_clut_segment(), dvbsub_parse_display_definition_segment(), dvbsub_parse_object_segment(), dvbsub_parse_page_segment(), dvbsub_parse_pixel_data_block(), dvbsub_parse_region_segment(), dvdsub_decode(), dvdsub_init(), dvvideo_close(), dvvideo_decode_frame(), eightsvx_decode_close(), eightsvx_decode_frame(), eightsvx_decode_init(), encode_close(), encode_end(), encode_frame(), encode_init(), encode_init_ls(), encode_nals(), encode_picture_lossless(), encode_picture_ls(), encode_rgb48_10bit(), encode_slice(), encode_slice_data(), encode_superframe(), end_frame(), erase_line(), erase_screen(), escape124_decode_close(), escape124_decode_frame(), escape124_decode_init(), escape130_decode_close(), escape130_decode_frame(), escape130_decode_init(), execute_code(), extract_header(), Faac_encode_close(), Faac_encode_frame(), Faac_encode_init(), ff_ac3_encode_close(), ff_ac3_encode_init(), ff_cavs_end(), ff_cavs_init(), ff_cmap_read_palette(), ff_dvvideo_init(), ff_h263_decode_end(), ff_h263_decode_frame(), ff_h263_decode_init(), ff_h264_decode_init(), ff_ivi_decode_close(), ff_ivi_decode_frame(), ff_mjpeg_decode_end(), ff_mjpeg_decode_frame(), ff_mjpeg_decode_init(), ff_mpeg_flush(), ff_mpeg_update_thread_context(), ff_MPV_encode_end(), ff_MPV_encode_init(), ff_MPV_encode_picture(), ff_msmpeg4_decode_init(), ff_pnm_end(), ff_pnm_init(), ff_rv34_decode_end(), ff_rv34_decode_frame(), ff_rv34_decode_init(), ff_rv34_decode_init_thread_copy(), ff_rv34_decode_update_thread_context(), ff_snow_common_init_after_header(), ff_snow_release_buffer(), ff_vdpau_h264_picture_complete(), ff_vdpau_h264_picture_start(), ff_vdpau_h264_set_reference_frames(), ff_vdpau_vc1_decode_picture(), ff_vp56_decode_frame(), ff_vp56_free(), ff_vp56_init(), ff_wma_end(), ff_wma_init(), fill_slice(), fill_slice_long(), find_quant_thread(), find_slice_quant(), finish_frame(), flac_decode_close(), flac_decode_frame(), flac_decode_init(), flac_encode_close(), flac_encode_frame(), flac_encode_init(), flashsv2_encode_end(), flashsv2_encode_frame(), flashsv2_encode_init(), flashsv_decode_block(), flashsv_decode_end(), flashsv_decode_frame(), flashsv_decode_init(), flashsv_encode_end(), flashsv_encode_frame(), flashsv_encode_init(), flic_decode_end(), flic_decode_frame_15_16BPP(), flic_decode_frame_8BPP(), flic_decode_init(), flush(), flush_dpb(), frame_thread_free(), frame_thread_init(), g722_decode_frame(), g722_decode_init(), g722_encode_close(), g722_encode_init(), g723_1_decode_frame(), g723_1_decode_init(), get_nb_samples(), get_stats(), gif_decode_close(), gif_decode_frame(), gif_decode_init(), gif_encode_close(), gif_encode_frame(), gif_encode_init(), gif_image_write_image(), gsm_decode_block(), gsm_decode_frame(), gsm_flush(), gsm_init(), h261_decode_end(), h261_decode_frame(), h261_decode_init(), h264_decode_end(), hscroll(), idcin_decode_end(), idcin_decode_frame(), idcin_decode_init(), imc_decode_close(), imc_decode_frame(), imc_decode_init(), init(), ipvideo_decode_end(), ipvideo_decode_frame(), ipvideo_decode_init(), ir2_decode_end(), ir2_decode_frame(), ir2_decode_init(), j2kdec_init(), j2kenc_destroy(), j2kenc_init(), lag_decode_end(), lag_decode_frame(), lag_decode_init(), latm_decode_frame(), latm_decode_init(), libcelt_dec_close(), libcelt_dec_decode(), libcelt_dec_init(), libgsm_decode_close(), libgsm_decode_frame(), libgsm_decode_init(), libgsm_encode_close(), libgsm_encode_frame(), libgsm_encode_init(), libgsm_flush(), libopenjpeg_decode_close(), libopenjpeg_decode_frame(), libopenjpeg_decode_init(), libopenjpeg_decode_init_thread_copy(), libopenjpeg_encode_close(), libopenjpeg_encode_frame(), libopenjpeg_encode_init(), libschroedinger_decode_close(), libschroedinger_decode_frame(), libschroedinger_decode_init(), libschroedinger_encode_close(), libschroedinger_encode_frame(), libschroedinger_encode_init(), libschroedinger_flush(), libschroedinger_frame_from_data(), libschroedinger_handle_first_access_unit(), libspeex_decode_close(), libspeex_decode_flush(), libspeex_decode_frame(), libspeex_decode_init(), log_encoder_error(), mace_decode_frame(), mace_decode_init(), mdec_common_init(), mimic_decode_end(), mimic_decode_frame(), mimic_decode_init(), mimic_decode_update_thread_context(), mjpegb_decode_frame(), mlp_decode_init(), mm_decode_end(), mm_decode_frame(), mm_decode_init(), mp3lame_encode_close(), mp3lame_encode_frame(), mp3lame_encode_init(), mp_decode_end(), mp_decode_frame(), mp_decode_init(), MPA_encode_frame(), MPA_encode_init(), mpc7_decode_close(), mpc7_decode_flush(), mpc7_decode_frame(), mpc7_decode_init(), mpc8_decode_frame(), mpc8_decode_init(), mpeg1_decode_picture(), mpeg1_decode_sequence(), mpeg_decode_end(), mpeg_decode_frame(), mpeg_decode_gop(), mpeg_decode_init(), mpeg_decode_postinit(), mpeg_decode_update_thread_context(), mpeg_decode_user_data(), mpeg_get_pixelformat(), msrle_decode_end(), msrle_decode_frame(), msrle_decode_init(), msvideo1_decode_end(), msvideo1_decode_frame(), msvideo1_decode_init(), mxpeg_decode_end(), mxpeg_decode_frame(), mxpeg_decode_init(), oggvorbis_decode_close(), oggvorbis_decode_frame(), oggvorbis_decode_init(), oggvorbis_encode_close(), oggvorbis_encode_frame(), oggvorbis_encode_init(), oggvorbis_init_encoder(), pam_encode_frame(), parse_palette_segment(), parse_picture_segment(), parse_presentation_segment(), pcm_bluray_decode_frame(), pcm_bluray_decode_init(), pcm_decode_frame(), pcm_decode_init(), pcx_decode_frame(), pcx_encode_frame(), pcx_encode_init(), pcx_end(), pcx_init(), png_dec_end(), png_dec_init(), png_enc_init(), pnm_decode_frame(), pnm_encode_frame(), prores_encode_close(), prores_encode_init(), ptx_decode_frame(), ptx_end(), ptx_init(), put_audio_specific_config(), qcelp_decode_frame(), qcelp_decode_init(), qdm2_decode_close(), qdm2_decode_frame(), qdm2_decode_init(), qtrle_decode_end(), qtrle_decode_frame(), qtrle_decode_init(), qtrle_encode_end(), qtrle_encode_frame(), qtrle_encode_init(), queue_frames(), ra144_decode_frame(), ra144_decode_init(), ra144_encode_close(), ra144_encode_frame(), ra144_encode_init(), ra288_decode_frame(), ra288_decode_init(), raw_close_decoder(), raw_decode(), raw_init_decoder(), raw_init_encoder(), read_access_unit(), read_huffman_tree(), receive_frame(), render_charset(), rl2_decode_end(), rl2_decode_frame(), rl2_decode_init(), roq_decode_end(), roq_decode_frame(), roq_decode_init(), roq_dpcm_encode_close(), roq_dpcm_encode_frame(), roq_dpcm_encode_init(), roq_encode_end(), roq_encode_frame(), roq_encode_init(), rpza_decode_end(), rpza_decode_frame(), rpza_decode_init(), rv10_decode_end(), rv10_decode_frame(), rv10_decode_init(), rv10_decode_packet(), rv30_decode_init(), rv40_decode_init(), s302m_decode_frame(), s302m_decode_init(), seqvideo_decode_end(), seqvideo_decode_frame(), seqvideo_decode_init(), set_chroma_format(), sgi_end(), sgi_init(), shorten_decode_close(), shorten_decode_frame(), shorten_decode_init(), show_stream(), sipr_decode_frame(), sipr_decoder_init(), slice_end(), smc_decode_end(), smc_decode_frame(), smc_decode_init(), smka_decode_frame(), smka_decode_init(), srt_encode_close(), srt_encode_frame(), srt_encode_init(), Stagefright_close(), Stagefright_decode_frame(), Stagefright_init(), start_frame(), submit_stats(), sunrast_decode_frame(), sunrast_encode_frame(), sunrast_encode_init(), sunrast_end(), sunrast_image_write_header(), sunrast_image_write_image(), sunrast_init(), svq1_decode_end(), svq1_decode_frame(), svq1_decode_init(), svq1_encode_end(), svq1_encode_frame(), svq1_encode_init(), svq3_decode_end(), svq3_decode_frame(), svq3_decode_init(), svq3_decode_slice_header(), synth_frame(), synth_superframe(), targa_encode_init(), targa_end(), targa_init(), tgq_decode_end(), tgq_decode_frame(), tgq_decode_init(), tgv_decode_end(), tgv_decode_frame(), tgv_decode_init(), tiff_end(), tiff_init(), tmv_decode_close(), tmv_decode_frame(), tmv_decode_init(), tqi_decode_end(), tqi_decode_frame(), tqi_decode_init(), truemotion1_decode_end(), truemotion1_decode_frame(), truemotion1_decode_init(), truespeech_decode_frame(), truespeech_decode_init(), tta_decode_close(), tta_decode_frame(), tta_decode_init(), twin_decode_close(), twin_decode_frame(), twin_decode_init(), txd_decode_frame(), txd_end(), txd_init(), ulti_decode_end(), ulti_decode_frame(), ulti_decode_init(), uninit(), update_frames(), utvideo_decode_close(), utvideo_decode_frame(), utvideo_decode_init(), utvideo_encode_close(), utvideo_encode_frame(), utvideo_encode_init(), vaapi_mpeg2_decode_slice(), vaapi_mpeg2_end_frame(), vaapi_mpeg2_start_frame(), vaapi_mpeg4_decode_slice(), vaapi_mpeg4_end_frame(), vaapi_mpeg4_start_frame(), vaapi_vc1_decode_slice(), vaapi_vc1_end_frame(), vaapi_vc1_start_frame(), vble_decode_close(), vble_decode_frame(), vble_decode_init(), vc1_decode_end(), vc1_decode_frame(), vc1_decode_init(), vcr1_common_init(), vcr1_decode_end(), vcr1_decode_frame(), vcr2_init_sequence(), video_encode_example(), vmdaudio_decode_frame(), vmdaudio_decode_init(), vmdvideo_decode_end(), vmdvideo_decode_frame(), vmdvideo_decode_init(), vorbis_decode_close(), vorbis_decode_flush(), vorbis_decode_frame(), vorbis_decode_init(), vorbis_encode_close(), vorbis_encode_frame(), vorbis_encode_init(), vp3_decode_end(), vp3_decode_flush(), vp3_decode_frame(), vp3_decode_init(), vp3_init_thread_copy(), vp3_update_thread_context(), vp56_size_changed(), vp5_decode_init(), vp6_decode_free(), vp6_decode_init(), vp8_decode(), vp8_decode_flush_impl(), vp8_decode_frame(), vp8_decode_free(), vp8_decode_init(), vp8_decode_init_thread_copy(), vp8_decode_update_thread_context(), vp8_encode(), vp8_free(), vp8_init(), vqa_decode_end(), vqa_decode_frame(), vqa_decode_init(), wavesynth_close(), wavesynth_decode(), wavesynth_init(), wavesynth_parse_extradata(), wavpack_decode_block(), wavpack_decode_end(), wavpack_decode_flush(), wavpack_decode_frame(), wavpack_decode_init(), wma_decode_init(), wma_decode_superframe(), wmavoice_decode_end(), wmavoice_decode_init(), wmavoice_decode_packet(), wmavoice_flush(), wmv2_decode_end(), wmv2_decode_init(), wmv2_encode_init(), ws_snd_decode_frame(), ws_snd_decode_init(), X264_close(), X264_frame(), X264_init(), xan_decode_chroma(), xan_decode_end(), xan_decode_frame(), xan_decode_frame_type0(), xan_decode_frame_type1(), xan_decode_init(), XAVS_close(), XAVS_frame(), XAVS_init(), xvid_encode_close(), xvid_encode_frame(), xvid_encode_init(), yop_decode_close(), yop_decode_frame(), yop_decode_init(), zerocodec_decode_close(), zerocodec_decode_frame(), and zerocodec_decode_init().

PTS of the last frame.

Definition at line 2916 of file avcodec.h.

Referenced by avcodec_flush_buffers(), avcodec_open2(), and guess_correct_pts().

Number of incorrect DTS values so far.

Definition at line 2915 of file avcodec.h.

Referenced by avcodec_flush_buffers(), avcodec_open2(), and guess_correct_pts().

Number of incorrect PTS values so far.

Definition at line 2914 of file avcodec.h.

Referenced by avcodec_open2(), guess_correct_pts(), and video_refresh().

Current statistics for PTS correction.

  • decoding: maintained and used by libavcodec, not intended to be used by user apps
  • encoding: unused

Definition at line 2913 of file avcodec.h.

Referenced by avcodec_open2(), guess_correct_pts(), and video_refresh().

amount of qscale smoothing over time (0.0-1.0)

Definition at line 2245 of file avcodec.h.

Referenced by add_codec(), ff_rate_control_init(), ff_rate_estimate_qscale(), ffm_read_header(), ffm_write_header(), init_pass2(), X264_init(), and XAVS_init().

amount of qscale change between easy & hard scenes (0.0-1.0)

Definition at line 2244 of file avcodec.h.

Referenced by add_codec(), ffm_read_header(), ffm_write_header(), get_qscale(), vp8_init(), X264_init(), and XAVS_init().

attribute_deprecated int AVCodecContext::quantizer_noise_shaping

Deprecated:
use mpegvideo private options instead

Definition at line 1904 of file avcodec.h.

Referenced by ff_MPV_encode_init().

Definition at line 2315 of file avcodec.h.

Referenced by add_codec(), ffm_read_header(), ffm_write_header(), modify_qscale(), and vp8_init().

const char* AVCodecContext::rc_eq

rate control equation

  • encoding: Set by user
  • decoding: unused

Definition at line 2299 of file avcodec.h.

Referenced by add_codec(), avcodec_copy_context(), ff_rate_control_init(), ffm_close(), ffm_read_header(), ffm_write_header(), and get_qscale().

Number of bits which should be loaded into the rc buffer before decoding starts.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2343 of file avcodec.h.

Referenced by ff_rate_control_init(), ff_xvid_rate_control_init(), new_video_stream(), vp8_init(), X264_init(), and XAVS_init().

initial complexity for pass1 ratecontrol

  • encoding: Set by user.

  • decoding: unused

Definition at line 2322 of file avcodec.h.

Referenced by ff_rate_control_init().

Ratecontrol attempt to use, at maximum,

of what can be used without an underflow.

  • encoding: Set by user.
  • decoding: unused.

Definition at line 2329 of file avcodec.h.

Referenced by ff_MPV_encode_picture(), and modify_qscale().

minimum bitrate

  • encoding: Set by user.

  • decoding: unused

Definition at line 2313 of file avcodec.h.

Referenced by ff_MPV_encode_init(), ff_MPV_encode_picture(), ff_vbv_update(), ffm_read_header(), ffm_write_header(), modify_qscale(), oggvorbis_init_encoder(), parse_ffconfig(), and vp8_init().

Ratecontrol attempt to use, at least,

times the amount needed to prevent a vbv overflow.

  • encoding: Set by user.
  • decoding: unused.

Definition at line 2336 of file avcodec.h.

Referenced by modify_qscale().

Definition at line 2292 of file avcodec.h.

Referenced by avcodec_copy_context(), get_qscale(), and new_video_stream().

ratecontrol override, see RcOverride

  • encoding: Allocated/set/freed by user.

  • decoding: unused

Definition at line 2291 of file avcodec.h.

Referenced by avcodec_copy_context(), get_qscale(), and new_video_stream().

Definition at line 2276 of file avcodec.h.

Referenced by modify_qscale().

Definition at line 2277 of file avcodec.h.

Referenced by modify_qscale().

ratecontrol qmin qmax limiting method 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2274 of file avcodec.h.

Referenced by modify_qscale().

obsolete FIXME remove

Definition at line 1577 of file avcodec.h.

Referenced by ff_rate_control_init(), ff_rate_control_uninit(), and ff_rate_estimate_qscale().

number of reference frames

  • encoding: Set by user.

  • decoding: Set by lavc.

Definition at line 1999 of file avcodec.h.

Referenced by config(), decode_slice_header(), encode_init(), ffm_read_header(), ffm_write_header(), X264_init(), and XAVS_init().

Called at the beginning of a frame to get cr buffer for it.

Buffer type (size, hints) must be the same. libavcodec won't check it. libavcodec will pass previous buffer in pic, function should return same buffer or new buffer with old frame "painted" into it. If pic.data[0] == NULL must behave like get_buffer(). if CODEC_CAP_DR1 is not set then reget_buffer() must call avcodec_default_reget_buffer() instead of providing buffers allocated by some other means.

  • encoding: unused
  • decoding: Set by libavcodec, user can override.

Referenced by aasc_decode_frame(), avcodec_get_context_defaults3(), avs_decode_frame(), bethsoftvid_decode_frame(), cdg_decode_frame(), cinepak_decode_frame(), cinvideo_decode_frame(), decode_frame(), decode_frame_byterun1(), decode_frame_ilbm(), flashsv_decode_frame(), flic_decode_frame_15_16BPP(), flic_decode_frame_8BPP(), ir2_decode_frame(), mm_decode_frame(), mp_decode_frame(), msrle_decode_frame(), msvideo1_decode_frame(), qtrle_decode_frame(), roq_decode_frame(), rpza_decode_frame(), seqvideo_decode_frame(), smc_decode_frame(), truemotion1_decode_frame(), ulti_decode_frame(), and xan_decode_frame().

Called to release buffers which were allocated with get_buffer.

A released buffer can be reused in get_buffer(). pic.data[*] must be set to NULL. May be called from a different thread if frame multithreading is used, but not by more than one thread at once, so does not need to be reentrant.

  • encoding: unused
  • decoding: Set by libavcodec, user can override.

Referenced by aasc_decode_end(), aura_decode_end(), aura_decode_frame(), avcodec_decode_audio3(), avcodec_default_reget_buffer(), avcodec_get_context_defaults3(), avs_decode_end(), avui_decode_close(), avui_decode_frame(), bethsoftvid_decode_end(), bfi_decode_close(), bfi_decode_frame(), bmp_decode_end(), bmp_decode_frame(), cavs_decode_frame(), cdg_decode_end(), cdg_decode_frame(), cdxl_decode_end(), cdxl_decode_frame(), cinepak_decode_end(), cinvideo_decode_end(), cmv_decode_end(), cmv_decode_frame(), common_end(), copy_frame(), cyuv_decode_end(), cyuv_decode_frame(), decode_close(), decode_end(), decode_flush(), decode_frame(), decode_pic(), dfa_decode_end(), dfa_decode_frame(), dirac_decode_frame(), dvvideo_close(), dvvideo_decode_frame(), encode_close(), encode_end(), escape124_decode_close(), escape124_decode_frame(), escape130_decode_close(), escape130_decode_frame(), execute_code(), ff_ivi_decode_close(), ff_ivi_decode_frame(), ff_mjpeg_decode_end(), ff_mjpeg_decode_sof(), ff_pnm_end(), ff_snow_common_end(), ff_snow_release_buffer(), ff_thread_release_buffer(), ff_vp56_decode_frame(), ff_vp56_free(), flashsv_decode_end(), flashsv_decode_frame(), flic_decode_end(), flush(), free_sequence_buffers(), get_siz(), gif_decode_close(), gif_decode_frame(), idcin_decode_end(), idcin_decode_frame(), init_image(), init_input_stream(), ipvideo_decode_end(), ipvideo_decode_frame(), ir2_decode_end(), lag_decode_end(), lag_decode_frame(), libschroedinger_decode_close(), libschroedinger_decode_frame(), mm_decode_end(), mp_decode_end(), msrle_decode_end(), msvideo1_decode_end(), mxpeg_decode_end(), mxpeg_decode_frame(), pcx_decode_frame(), pcx_end(), png_dec_end(), pnm_decode_frame(), ptx_decode_frame(), ptx_end(), qtrle_decode_end(), release_delayed_buffers(), rl2_decode_end(), rl2_decode_frame(), roq_decode_end(), roq_encode_end(), rpza_decode_end(), select_input_picture(), seqvideo_decode_end(), sgi_end(), smc_decode_end(), Stagefright_close(), Stagefright_decode_frame(), sunrast_decode_frame(), sunrast_end(), svq1_encode_end(), targa_end(), tgq_decode_end(), tgq_decode_frame(), tiff_end(), tmv_decode_close(), tmv_decode_frame(), tqi_decode_end(), tqi_decode_frame(), truemotion1_decode_end(), truemotion1_decode_header(), txd_decode_frame(), txd_end(), ulti_decode_end(), uninit(), update_context_from_user(), v308_decode_close(), v308_decode_frame(), v408_decode_close(), v408_decode_frame(), v410_decode_close(), v410_decode_frame(), vble_decode_close(), vble_decode_frame(), vc1_decode_end(), vcr1_decode_end(), vcr1_decode_frame(), vmdvideo_decode_end(), vmdvideo_decode_frame(), vqa_decode_end(), vqa_decode_frame(), xan_decode_end(), xan_decode_frame(), xbm_decode_close(), xbm_decode_frame(), xwd_decode_close(), xwd_decode_frame(), y41p_decode_close(), y41p_decode_frame(), yop_decode_close(), yop_decode_frame(), yuv4_decode_close(), yuv4_decode_frame(), zerocodec_decode_close(), and zerocodec_decode_frame().

opaque 64bit number (generally a PTS) that will be reordered and output in AVFrame.reordered_opaque

Deprecated:
in favor of pkt_pts
  • encoding: unused
  • decoding: Set by user.

Definition at line 2587 of file avcodec.h.

Referenced by audio_get_buffer(), avcodec_get_context_defaults3(), ff_init_buffer_info(), raw_decode(), Stagefright_decode_frame(), update_context_from_user(), and video_get_buffer().

Request decoder to use this channel layout if it can (0 for default)

  • encoding: unused
  • decoding: Set by user.

Definition at line 2143 of file avcodec.h.

Referenced by dca_decode_frame(), output_configure(), and read_major_sync().

Decoder should decode to this many channels if it can (0 for default)

  • encoding: unused
  • decoding: Set by user.

Deprecated:
Deprecated in favor of request_channel_layout.

Definition at line 2128 of file avcodec.h.

Referenced by ac3_decode_frame(), ac3_decode_init(), dca_decode_frame(), dca_decode_init(), dca_filter_channels(), ff_aac_ac3_parse(), read_major_sync(), and read_restart_header().

desired sample format

  • encoding: Not used.

  • decoding: Set by user. Decoder will decode to this format if it can.

Definition at line 2158 of file avcodec.h.

Referenced by aac_decode_init(), ac3_decode_init(), atrac3_decode_init(), dca_decode_init(), decode_init(), and vorbis_decode_init().

void(* AVCodecContext::rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb)

Referenced by encode_thread().

Definition at line 2440 of file avcodec.h.

Referenced by encode_thread(), and ff_MPV_encode_init().

audio sample format

  • encoding: Set by user.

  • decoding: Set by libavcodec. sample format

Definition at line 2089 of file avcodec.h.

Referenced by aac_decode_frame_int(), aac_decode_init(), ac3_decode_frame(), ac3_decode_init(), add_audio_stream(), add_input_streams(), adpcm_decode_init(), adx_decode_init(), alac_decode_init(), alac_encode_init(), amr_decode_fix_avctx(), amrnb_decode_init(), amrwb_decode_init(), ape_decode_init(), atrac1_decode_init(), atrac3_decode_frame(), atrac3_decode_init(), audio_decode_example(), audio_decode_frame(), audio_encode_example(), audio_get_buffer(), avcodec_decode_audio3(), avcodec_decode_audio4(), avcodec_encode_audio(), avcodec_encode_audio2(), avcodec_get_context_defaults3(), avcodec_open2(), avcodec_string(), bmv_aud_decode_init(), cdata_read_header(), choose_sample_fmt(), cinaudio_decode_init(), configure_complex_filter(), cook_decode_init(), dca_decode_frame(), dca_decode_init(), decode_frame(), decode_init(), decode_tag(), decoder_init(), DEF_CHOOSE_FORMAT(), dpcm_decode_init(), dprint_options(), dshow_add_device(), eightsvx_decode_init(), ff_aac_sbr_ctx_init(), ffm_read_header(), ffm_write_header(), flac_decode_init(), flac_encode_init(), flic_read_header(), g722_decode_init(), g723_1_decode_init(), gsm_init(), has_codec_parameters(), imc_decode_init(), init_filters(), init_offset(), lavfi_read_header(), libcelt_dec_init(), libgsm_decode_init(), libspeex_decode_init(), mace_decode_init(), mkv_write_tracks(), mlp_parse(), mp3lame_encode_frame(), mp3lame_encode_init(), mpc7_decode_init(), mpc8_decode_init(), new_audio_stream(), open_audio(), output_data(), pad_last_frame(), pcm_bluray_decode_frame(), pcm_bluray_parse_header(), pcm_decode_init(), qcelp_decode_init(), qdm2_decode_init(), ra144_decode_init(), ra288_decode_init(), read_major_sync(), s302m_parse_frame_header(), show_stream(), sipr_decoder_init(), smka_decode_frame(), smka_decode_init(), transcode_init(), truespeech_decode_init(), tta_decode_init(), twin_decode_init(), vmdaudio_decode_init(), vorbis_decode_frame(), vorbis_decode_init(), wavesynth_init(), wavpack_decode_block(), wavpack_decode_frame(), wavpack_decode_init(), wma_decode_init(), wmavoice_decode_init(), write_audio_frame(), and ws_snd_decode_init().

samples per second

Definition at line 2081 of file avcodec.h.

Referenced by aac_decode_frame_int(), aac_decode_init(), aac_encode_frame(), aac_encode_init(), aacPlus_encode_init(), ac3_decode_frame(), add_audio_stream(), add_av_stream(), add_codec(), add_input_streams(), adpcm_encode_init(), adx_encode_header(), adx_encode_init(), adx_read_header(), aea_read_header(), aiff_read_header(), aiff_write_header(), alac_encode_init(), amr_decode_fix_avctx(), amr_read_header(), amr_wb_encode_init(), apc_read_header(), ape_read_header(), apply_param_change(), atrac3_decode_init(), au_read_header(), audio_decode_frame(), audio_encode_example(), audio_get_buffer(), audio_read_header(), audio_write_header(), av_get_audio_frame_duration(), avcodec_decode_audio4(), avcodec_encode_audio(), avcodec_open2(), avcodec_string(), avformat_write_header(), avisynth_read_header(), avpriv_adx_decode_header(), avpriv_flac_parse_streaminfo(), bfi_read_header(), bmv_read_header(), caf_write_header(), cdata_read_header(), cdxl_read_packet(), celt_header(), cin_read_header(), compute_frame_duration(), compute_status(), configure_complex_filter(), cook_decode_init(), create_audio_stream(), create_vorbis_context(), daud_header(), daud_write_header(), dca_decode_frame(), dca_parse(), decode_audio(), decode_frame(), decode_init(), decode_ppc(), decode_stream_header(), decode_tag(), decode_wave_header(), DEF_CHOOSE_FORMAT(), dshow_add_device(), dv_extract_audio_info(), dv_init_mux(), dxa_read_header(), ea_read_header(), encode_init(), Faac_encode_init(), ff_aac_ac3_parse(), ff_af_queue_add(), ff_mov_read_stsd_entries(), ff_mp4_read_dec_config_descr(), ff_parse_specific_params(), ff_pcm_read_seek(), ff_psy_preprocess_init(), ff_raw_read_header(), ff_rtp_get_codec_info(), ff_rtp_parse_open(), ff_samples_to_time_base(), ff_voc_get_packet(), ff_wma_init(), ffm_read_header(), ffm_write_header(), film_read_header(), find_expected_header(), find_stream_in_feed(), flac_encode_init(), flac_header(), flic_read_header(), flv_read_packet(), flv_set_audio_codec(), flv_write_header(), fourxm_read_header(), g723_1_init(), g729_read_header(), get_aiff_header(), get_audio_flags(), get_best_header(), get_bit_rate(), get_codec_data(), get_sindex(), gsm_init(), gsm_read_header(), gxf_write_header(), handle_file(), has_codec_parameters(), idcin_read_header(), iff_read_header(), init_bitstream_params(), init_filters(), ipmovie_read_header(), iss_read_header(), lavfi_read_header(), libcelt_dec_init(), libgsm_decode_init(), libgsm_encode_init(), libspeex_decode_init(), lxf_read_header(), matroska_read_header(), mkv_write_tracks(), mlp_parse(), mmf_read_header(), modplug_read_header(), mov_write_audio_tag(), mov_write_esds_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_uuidprof_tag(), mp3_header_decompress(), mp3_write_xing(), mp3lame_encode_init(), MPA_encode_init(), mpc8_read_header(), mpc_read_header(), mpeg_mux_init(), mpegaudio_parse(), mpegps_read_packet(), mpegts_write_header(), mtv_read_header(), mxf_parse_structural_metadata(), mxf_write_generic_sound_common(), mxf_write_header(), mxf_write_wav_common(), mxg_read_header(), new_audio_stream(), nsv_read_chunk(), nut_read_header(), ogg_write_header(), oggvorbis_decode_init(), oggvorbis_init_encoder(), ogm_dshow_header(), ogm_header(), oma_read_header(), oma_write_header(), open_audio(), output_packet(), parse_ffconfig(), parse_packet(), pcm_bluray_parse_header(), pcm_encode_init(), pmp_header(), psy_3gpp_init(), pulse_read_header(), qcp_read_header(), qdm2_decode_init(), r3d_read_reda(), read_desc_chunk(), read_header(), read_major_sync(), read_packet(), read_specific_config(), rl2_read_header(), rm_read_audio_stream_info(), rm_write_header(), roq_dpcm_encode_init(), roq_read_packet(), rso_read_header(), rso_write_header(), rtp_write_header(), rv10_write_header(), s302m_parse_frame_header(), sbg_read_header(), search_for_quantizers_twoloop(), seq_read_header(), show_stream(), smacker_read_header(), smjpeg_read_header(), smjpeg_write_header(), sol_read_header(), sox_read_header(), sox_write_header(), spdif_read_packet(), speex_header(), str_read_packet(), stream_component_open(), stream_cycle_channel(), swf_write_header(), thp_read_header(), tmv_read_header(), transcode_init(), tta_decode_init(), tta_read_header(), twin_decode_frame(), twin_decode_init(), validate_options(), vid_read_packet(), vmd_read_header(), vmdaudio_decode_init(), voc_write_packet(), vorbis_decode_init(), vorbis_header(), vqf_read_header(), wavesynth_parse_extradata(), wc3_read_header(), wmavoice_decode_init(), write_streamheader(), wsaud_read_header(), wsvqa_read_packet(), wv_read_header(), xa_read_header(), xmv_read_header(), xwma_read_header(), and yop_read_header().

Multiplied by qscale for each frame and added to scene_change_score.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2013 of file avcodec.h.

scene change detection threshold 0 is default, larger means fewer detected scene changes.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1884 of file avcodec.h.

Referenced by encode_frame(), encode_picture(), ff_MPV_encode_init(), ffm_read_header(), ffm_write_header(), X264_init(), and XAVS_init().

Number of macroblock rows at the bottom which are skipped.

  • encoding: unused
  • decoding: Set by user.

Definition at line 1942 of file avcodec.h.

Referenced by decode_chunks(), and ff_er_frame_end().

Definition at line 2454 of file avcodec.h.

Referenced by ff_MPV_encode_picture().

  • encoding: unused
    • decoding: Set by user.

Definition at line 2864 of file avcodec.h.

Referenced by MPV_decode_mb_internal(), and stream_component_open().

Number of macroblock rows at the top which are skipped.

  • encoding: unused
  • decoding: Set by user.

Definition at line 1935 of file avcodec.h.

Referenced by ff_er_add_slice(), and ff_er_frame_end().

slice count

  • encoding: Set by libavcodec.

  • decoding: Set by user (or 0).

Definition at line 1676 of file avcodec.h.

Referenced by ff_rv34_decode_frame(), get_slice_offset(), rv10_decode_frame(), and update_context_from_user().

slice flags

  • encoding: unused
  • decoding: Set by user.

Definition at line 1842 of file avcodec.h.

Referenced by ff_draw_horiz_band(), mpeg_field_start(), and update_context_from_user().

slice offsets in the frame in bytes

  • encoding: Set/allocated by libavcodec.

  • decoding: Set/allocated by user (or NULL).

Definition at line 1692 of file avcodec.h.

Referenced by avcodec_copy_context(), frame_thread_free(), get_slice_offset(), and update_context_from_user().

Number of slices.

Indicates number of picture subdivisions. Used for parallelized decoding.

  • encoding: Set by user
  • decoding: unused

Definition at line 2072 of file avcodec.h.

Referenced by ff_MPV_common_init(), vp8_init(), and X264_init().

spatial complexity masking (0-> disabled)

  • encoding: Set by user.

  • decoding: unused

Definition at line 1655 of file avcodec.h.

Referenced by adaptive_quantization(), and ff_MPV_encode_init().

pass2 encoding statistics input buffer Concatenated stuff from stats_out of pass1 should be placed here.

  • encoding: Allocated/set/freed by user.
  • decoding: unused

Definition at line 2477 of file avcodec.h.

Referenced by ff_rate_control_init(), submit_stats(), transcode(), transcode_init(), vp8_init(), and xvid_encode_init().

pass1 encoding statistics output buffer

  • encoding: Set by libavcodec.

  • decoding: unused

Definition at line 2469 of file avcodec.h.

Referenced by common_end(), do_video_out(), encode_close(), encode_end(), encode_init(), ff_MPV_common_end(), ff_MPV_common_init(), ff_write_pass1_stats(), flush_encoders(), get_stats(), vp8_encode(), vp8_free(), xvid_encode_close(), and xvid_encode_frame().

fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').

This is used to work around some encoder bugs.

  • encoding: unused
  • decoding: Set by user, will be converted to uppercase by libavcodec during init.

Definition at line 1350 of file avcodec.h.

Referenced by avi_read_header(), avisynth_read_header(), and ff_MPV_common_init().

strictly follow the standard (MPEG4, .

..).

  • encoding: Set by user.
  • decoding: Set by user. Setting this to STRICT or higher means the encoder and decoder will generally do stupid things, whereas setting it to unofficial or lower will mean the encoder might produce output that is not supported by all spec-compliant decoders. Decoders don't differentiate between normal, unofficial and experimental (that is, they always try to decode things when they can) unless they are explicitly asked to behave stupidly (=strictly conform to the specs)

Definition at line 2514 of file avcodec.h.

Referenced by assert_codec_experimental(), avcodec_open2(), choose_pix_fmts(), choose_pixel_fmt(), config(), decode_postinit(), encode_init(), ff_fix_long_p_mvs(), ff_get_best_fcode(), ff_MPV_encode_init(), ffm_read_header(), ffm_write_header(), find_frame_rate_index(), libgsm_encode_init(), mov_get_codec_tag(), mp3_header_compress(), parse_ffconfig(), and validate_codec_tag().

attribute_deprecated int AVCodecContext::sub_id

Deprecated:
this field is unused

Definition at line 1356 of file avcodec.h.

Header containing style information for text subtitles.

For SUBTITLE_ASS subtitle type, it should contain the whole ASS [Script Info] and [V4+ Styles] section, plus the [Events] line and the Format line following. It shouldn't include any Dialogue line.

Definition at line 2881 of file avcodec.h.

Referenced by ass_decode_init(), ass_encode_init(), avcodec_open2(), avformat_free_context(), ff_ass_subtitle_header(), srt_encode_init(), transcode(), and transcode_init().

temporary complexity masking (0-> disabled)

  • encoding: Set by user.

  • decoding: unused

Definition at line 1648 of file avcodec.h.

Referenced by adaptive_quantization(), and ff_MPV_encode_init().

Set by the client if its custom get_buffer() callback can be called synchronously from another thread, which allows faster multithreaded decoding.

draw_horiz_band() will be called from other threads regardless of this setting. Ignored if the default get_buffer() is used.

  • encoding: Set by user.
  • decoding: Set by user.

Definition at line 2730 of file avcodec.h.

Referenced by ff_thread_can_start_frame(), ff_thread_get_buffer(), frame_worker_thread(), submit_packet(), and update_context_from_user().

Which multithreading methods to use.

Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread, so clients which cannot provide future frames should not use it.

  • encoding: Set by user, otherwise the default is used.
  • decoding: Set by user, otherwise the default is used.

Definition at line 2711 of file avcodec.h.

Referenced by validate_thread_parameters(), and X264_init().

For some codecs, the time base is closer to the field rate than the frame rate.

Most notably, H.264 and MPEG-2 specify time_base as half of frame duration if no telecine is used ...

Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2.

Definition at line 1451 of file avcodec.h.

Referenced by compute_frame_duration(), compute_pkt_fields2(), decode_sequence_header_adv(), ff_h264_decode_init(), ff_msmpeg4_encode_ext_header(), get_fps(), mpeg_decode_postinit(), optimum_dist(), optimum_use15_7(), output_packet(), transcode_init(), update_context_from_thread(), vc1_extract_headers(), and vp8_encode().

This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.

For fixed-fps content, timebase should be 1/framerate and timestamp increments should be identically 1.

  • encoding: MUST be set by user.
  • decoding: Set by libavcodec.

Definition at line 1442 of file avcodec.h.

Referenced by add_av_stream(), add_codec(), add_video_stream(), av_mpeg4_decode_header(), avcodec_encode_audio(), avcodec_get_context_defaults3(), avcodec_open2(), avcodec_string(), avformat_find_stream_info(), avformat_write_header(), avi_write_header(), check_recording_time(), cmv_process_header(), compute_frame_duration(), compute_pkt_fields(), compute_pkt_fields2(), compute_status(), config(), dc1394_read_common(), decode_frame(), decode_seq_header(), decode_sequence_header_adv(), decode_slice_header(), decode_vol_header(), decode_vop_header(), dirac_header(), do_audio_out(), do_subtitle_out(), do_video_out(), do_video_stats(), dshow_add_device(), dump_stream_format(), dv_extract_video_info(), dvvideo_decode_frame(), encode_ext_header(), encode_init(), estimate_best_b_count(), fbdev_read_header(), ff_af_queue_add(), ff_flv_encode_picture_header(), ff_framehash_write_header(), ff_h261_encode_picture_header(), ff_h263_decode_picture_header(), ff_h263_encode_picture_header(), ff_h263_show_pict_info(), ff_h264_decode_init(), ff_mov_read_stsd_entries(), ff_mpeg4_encode_picture_header(), ff_MPV_encode_init(), ff_MPV_encode_picture(), ff_msmpeg4_encode_ext_header(), ff_parse_specific_params(), ff_raw_video_read_header(), ff_samples_to_time_base(), ff_set_mpeg4_time(), ff_vdpau_mpeg4_decode_picture(), ff_xvid_rate_control_init(), ff_xvid_rate_estimate_qscale(), ffm_read_header(), ffm_write_header(), find_frame_rate_index(), flush_encoders(), flv_write_header(), get_fps(), get_video_format_idx(), gif_write_video(), grab_read_header(), h261_decode_picture_header(), init_convert_timestamp(), init_filters(), lavfi_read_header(), libschroedinger_encode_init(), libschroedinger_handle_first_access_unit(), microdvd_decode_frame(), mkv_write_tracks(), mov_get_dv_codec_tag(), mov_write_dvc1_structs(), mov_write_header(), mov_write_uuidprof_tag(), mpeg4_encode_gop_header(), mpeg4_encode_vol_header(), mpeg_decode_postinit(), mpegts_write_header(), mpegvideo_extract_headers(), mpegvideo_parse(), mxf_write_header(), ogg_write_header(), oggvorbis_decode_init(), opt_target(), optimum_dist(), optimum_use15_7(), output_packet(), parse_ffconfig(), parse_packet(), parse_source_parameters(), parse_timecode_in_framenum_format(), poll_filters(), queue_picture(), rm_write_header(), rtp_write_header(), set_frame_distances(), show_stream(), swf_write_header(), tb_unreliable(), tgq_decode_init(), tgv_decode_init(), tqi_decode_init(), transcode_init(), txd_read_header(), update_context_from_thread(), v4l2_read_header(), v4l2_set_parameters(), vaapi_mpeg4_start_frame(), vfw_read_header(), video_encode_example(), vp8_init(), write_trailer(), write_video_frame(), x11grab_read_header(), X264_init(), XAVS_init(), xvid_correct_framerate(), and xvid_encode_init().

GOP timecode frame start number

  • encoding: Set by user, in non drop frame format
  • decoding: Set by libavcodec (timecode in the 25 bits format, -1 if unset).

Definition at line 2430 of file avcodec.h.

Referenced by avcodec_get_context_defaults3(), encode_init(), mpeg1_encode_sequence_header(), mpeg_decode_gop(), and show_stream().

trellis RD quantization

  • encoding: Set by user.

  • decoding: unused

Definition at line 2411 of file avcodec.h.

Referenced by adpcm_compress_trellis(), adpcm_encode_init(), encode_block(), encode_end(), encode_init(), ff_MPV_encode_init(), g722_encode_init(), X264_init(), XAVS_init(), and xvid_encode_init().

VBV delay coded in the last frame (in periods of a 27 MHz clock).

Used for compliant TS muxing.

  • encoding: Set by libavcodec.
  • decoding: unused.

Definition at line 2906 of file avcodec.h.

Referenced by ff_MPV_encode_picture().

picture width / height.

  • encoding: MUST be set by user.
  • decoding: Set by libavcodec. Note: For compatibility it is possible to set this instead of coded_width/height before decoding.

Definition at line 1485 of file avcodec.h.

Referenced by a64multi_encode_frame(), aasc_decode_frame(), add_av_stream(), add_codec(), add_input_streams(), add_video_stream(), alloc_buffer(), apply_param_change(), asf_read_stream_properties(), asf_write_header1(), aura_decode_frame(), aura_decode_init(), av_mpeg4_decode_header(), avcodec_decode_video2(), avcodec_default_reget_buffer(), avcodec_encode_video2(), avcodec_open2(), avcodec_set_dimensions(), avcodec_string(), avformat_write_header(), avi_read_header(), avi_write_header(), avisynth_read_header(), avpriv_dv_codec_profile(), avs_read_packet(), avui_decode_frame(), avui_encode_frame(), avui_encode_init(), bethsoftvid_decode_frame(), bfi_decode_frame(), bfi_decode_init(), bfi_read_header(), bink_decode_plane(), binkb_decode_plane(), bitline2chunky(), bitplanar2chunky(), bmp_decode_frame(), bmp_encode_frame(), bmv_read_header(), cdg_decode_init(), cdxl_decode_frame(), cdxl_decode_ham6(), cdxl_decode_ham8(), cdxl_read_packet(), cin_read_header(), cinepak_decode(), cinepak_decode_init(), cinvideo_decode_frame(), cinvideo_decode_init(), cmv_decode_inter(), cmv_decode_intra(), cmv_process_header(), codec_get_buffer(), codec_reinit(), common_init(), compute_status(), config(), configure_complex_filter(), configure_output_video_filter(), configure_video_filters(), CustomSource::CustomSource(), cyuv_decode_init(), dc1394_read_common(), decode_13(), decode_frame(), decode_frame_byterun1(), decode_frame_header(), decode_frame_ilbm(), decode_i2_frame(), decode_i_frame(), decode_init(), decode_p_frame(), decode_picture_header(), decode_seq_header(), decode_sequence_header_adv(), decode_slice_header(), decode_stream_header(), decode_thread(), decode_video(), dfa_decode_frame(), dfa_decode_init(), dfa_read_header(), dnxhd_decode_frame(), dnxhd_encode_init(), dnxhd_write_header(), do_streamcopy(), do_video_stats(), draw_char(), dshow_add_device(), dump_stream_format(), dv_write_pack(), dvvideo_init_encoder(), dxa_read_header(), ea_read_header(), encode_frame(), encode_init(), encode_picture_ls(), encode_rgb48_10bit(), encode_slice(), erase_screen(), escape124_decode_frame(), escape124_decode_init(), escape130_decode_frame(), escape130_decode_init(), estimate_best_b_count(), execute_code(), fbdev_read_header(), ff_ccitt_unpack(), ff_create_schro_frame(), ff_dnxhd_find_cid(), ff_init_buffer_info(), ff_mov_read_stsd_entries(), ff_mpeg_update_thread_context(), ff_MPV_encode_init(), ff_MPV_frame_start(), ff_pnm_decode_header(), ff_print_debug_info(), ff_raw_read_header(), ff_rm_read_mdpr_codecdata(), ff_rv34_decode_init(), ff_sauce_read(), ff_snow_alloc_blocks(), ff_snow_common_init_after_header(), ff_snow_frame_start(), ffm_read_header(), ffm_write_header(), fill_picture_parameters(), film_read_header(), find_slice_quant(), find_stream_in_feed(), flashsv2_encode_init(), flashsv_decode_frame(), flashsv_encode_init(), flic_decode_frame_15_16BPP(), flic_decode_frame_8BPP(), flic_read_header(), fourxm_read_header(), get_siz(), get_video_format_idx(), gif_encode_frame(), gif_encode_init(), gif_image_write_header(), gif_image_write_image(), gif_write_header(), gif_write_video(), grab_read_header(), halfpel_interpol(), handle_file(), has_codec_parameters(), hscroll(), idcin_decode_vlcs(), idcin_read_header(), iff_read_header(), init(), init_bundles(), init_filters(), init_image(), init_slice_contexts(), ipmovie_read_header(), ipvideo_decode_frame(), ipvideo_decode_opcodes(), ir2_decode_frame(), ivf_write_header(), j2kenc_init(), lag_decode_arith_plane(), lag_decode_frame(), lavfi_read_header(), libopenjpeg_copy_packed16(), libopenjpeg_copy_packed8(), libopenjpeg_copy_unpacked16(), libopenjpeg_copy_unpacked8(), libopenjpeg_encode_frame(), libschroedinger_encode_init(), libschroedinger_frame_from_data(), libschroedinger_handle_first_access_unit(), matroska_read_header(), mca(), mimic_decode_frame(), mj2_create_image(), mkv_write_tracks(), mm_decode_intra(), modplug_read_header(), mov_get_dv_codec_tag(), mov_read_trak(), mov_write_avid_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_tapt_tag(), mov_write_tkhd_tag(), mov_write_uuidprof_tag(), mov_write_video_tag(), mp_decode_frame(), mp_decode_frame_helper(), mp_decode_init(), mp_decode_line(), mp_read_changes_map(), mpegvideo_extract_headers(), msrle_decode_frame(), msrle_decode_pal4(), msvideo1_decode_16bit(), msvideo1_decode_8bit(), mtv_read_header(), mxf_parse_mpeg2_frame(), mxf_parse_structural_metadata(), mxf_write_cdci_common(), new_video_stream(), nsv_parse_NSVs_header(), nut_read_header(), nuv_header(), ogm_dshow_header(), ogm_header(), open_video(), opt_output_file(), pam_encode_frame(), parse_ffconfig(), parse_h264_sdp_line(), parse_picture_segment(), parse_presentation_segment(), pcx_decode_frame(), pcx_encode_frame(), pmp_header(), pnm_decode_frame(), pnm_encode_frame(), pnm_parse(), pre_process_video_frame(), print_report(), prores_encode_frame(), prores_encode_init(), prores_encode_picture(), ptx_decode_frame(), qtrle_encode_frame(), qtrle_encode_init(), r3d_read_red1(), raw_decode(), raw_encode(), raw_init_decoder(), rawvideo_read_packet(), read_frame(), read_header(), read_packet(), read_seek(), receive_frame(), rl2_decode_init(), rl2_read_header(), rl2_rle_decode(), roq_decode_frame(), roq_decode_init(), roq_encode_init(), roq_read_packet(), rpl_read_header(), rpza_decode_stream(), rv10_write_header(), sdl_write_header(), sdl_write_packet(), seq_read_header(), show_stream(), siff_parse_vbv1(), smacker_read_header(), smc_decode_stream(), smjpeg_write_header(), sp5x_decode_frame(), Stagefright_init(), str_read_packet(), sunrast_decode_frame(), sunrast_encode_init(), sunrast_image_write_header(), sunrast_image_write_image(), svq1_decode_init(), svq1_encode_end(), svq1_encode_init(), svq3_decode_init(), swf_write_header(), swf_write_video(), targa_encode_frame(), tgq_decode_frame(), tgv_decode_frame(), tgv_decode_inter(), theora_header(), thp_read_header(), tm2_decode_blocks(), tm2_motion_block(), tmv_decode_frame(), tmv_read_header(), to_meta_with_crop(), tqi_decode_frame(), transcode_init(), truemotion1_decode_16bit(), truemotion1_decode_24bit(), truemotion1_decode_header(), truemotion1_decode_init(), txd_decode_frame(), ulti_decode_init(), update_context_from_thread(), update_dimensions(), utvideo_decode_frame(), utvideo_decode_init(), utvideo_encode_frame(), utvideo_encode_init(), v308_decode_frame(), v308_decode_init(), v308_encode_frame(), v308_encode_init(), v408_decode_frame(), v408_encode_frame(), v410_decode_frame(), v410_decode_init(), v410_encode_frame(), v410_encode_init(), v4l2_read_header(), vb_decode_framedata(), vble_decode_frame(), vble_decode_init(), vc1_decode_frame(), vc1_decode_init(), vc1t_read_header(), vc1test_write_header(), vcr1_decode_frame(), vfw_read_header(), video_decode_example(), video_encode_example(), video_get_buffer(), video_thread(), vmd_decode(), vp3_decode_init(), vp6_parse_header(), vp8_decode(), vp8_init(), wc3_read_header(), write_packet(), write_streamheader(), write_trailer(), write_video_frame(), wsvqa_read_header(), x11grab_read_header(), X264_init(), xan_decode_chroma(), xan_decode_frame_type0(), xan_decode_frame_type1(), xan_decode_init(), xan_wc3_copy_pixel_run(), xan_wc3_decode_frame(), xan_wc3_output_pixel_run(), XAVS_init(), xbm_decode_frame(), xbm_encode_frame(), xiph_parse_fmtp_pair(), xmv_read_header(), xvid_encode_frame(), xvid_encode_init(), xwd_decode_frame(), xwd_encode_frame(), y41p_decode_frame(), y41p_decode_init(), y41p_encode_frame(), y41p_encode_init(), yop_decode_frame(), yop_decode_init(), yop_read_header(), yuv4_decode_frame(), yuv4_encode_frame(), yuv4_read_header(), yuv4_read_packet(), zerocodec_decode_frame(), zerocodec_decode_init(), and zmbv_me().

Work around bugs in encoders which sometimes cannot be detected automatically.

  • encoding: Set by user
  • decoding: Set by user

Definition at line 2484 of file avcodec.h.

Referenced by ff_h263_decode_init(), ff_h264_decode_init(), ff_mpeg4_set_direct_mv(), and stream_component_open().


The documentation for this struct was generated from the following file:

Generated on Fri Oct 26 02:48:05 2012 for FFmpeg by  doxygen 1.5.8