Data Structures | Macros | Enumerations | Functions

Types and functions for working with AVPacket. More...

Data Structures

struct  AVPacketSideData
struct  AVPacket
 This structure stores compressed data. More...


#define AV_PKT_FLAG_KEY   0x0001
 The packet contains a keyframe. More...
#define AV_PKT_FLAG_CORRUPT   0x0002
 The packet content is corrupted. More...
#define AV_PKT_FLAG_DISCARD   0x0004
 Flag is used to discard packets which are required to maintain valid decoder state but are not required for output and should be dropped after decoding. More...
#define AV_PKT_FLAG_TRUSTED   0x0008
 The packet comes from a trusted source. More...
#define AV_PKT_FLAG_DISPOSABLE   0x0010
 Flag is used to indicate packets that contain frames that can be discarded by the decoder. More...


enum  AVPacketSideDataType {


AVPacketav_packet_alloc (void)
 Allocate an AVPacket and set its fields to default values. More...
AVPacketav_packet_clone (const AVPacket *src)
 Create a new packet that references the same data as src. More...
void av_packet_free (AVPacket **pkt)
 Free the packet, if the packet is reference counted, it will be unreferenced first. More...
int av_new_packet (AVPacket *pkt, int size)
 Allocate the payload of a packet and initialize its fields with default values. More...
void av_shrink_packet (AVPacket *pkt, int size)
 Reduce packet size, correctly zeroing padding. More...
int av_grow_packet (AVPacket *pkt, int grow_by)
 Increase packet size, correctly zeroing padding. More...
int av_packet_from_data (AVPacket *pkt, uint8_t *data, int size)
 Initialize a reference-counted packet from av_malloc()ed data. More...
uint8_t * av_packet_new_side_data (AVPacket *pkt, enum AVPacketSideDataType type, size_t size)
 Allocate new information of a packet. More...
int av_packet_add_side_data (AVPacket *pkt, enum AVPacketSideDataType type, uint8_t *data, size_t size)
 Wrap an existing array as a packet side data. More...
int av_packet_shrink_side_data (AVPacket *pkt, enum AVPacketSideDataType type, size_t size)
 Shrink the already allocated side data buffer. More...
uint8_t * av_packet_get_side_data (const AVPacket *pkt, enum AVPacketSideDataType type, size_t *size)
 Get side information from packet. More...
const char * av_packet_side_data_name (enum AVPacketSideDataType type)
uint8_t * av_packet_pack_dictionary (AVDictionary *dict, size_t *size)
 Pack a dictionary for use in side_data. More...
int av_packet_unpack_dictionary (const uint8_t *data, size_t size, AVDictionary **dict)
 Unpack a dictionary from side_data. More...
void av_packet_free_side_data (AVPacket *pkt)
 Convenience function to free all the side data stored. More...
int av_packet_ref (AVPacket *dst, const AVPacket *src)
 Setup a new reference to the data described by a given packet. More...
void av_packet_unref (AVPacket *pkt)
 Wipe the packet. More...
void av_packet_move_ref (AVPacket *dst, AVPacket *src)
 Move every field in src to dst and reset src. More...
int av_packet_copy_props (AVPacket *dst, const AVPacket *src)
 Copy only "properties" fields from src to dst. More...
int av_packet_make_refcounted (AVPacket *pkt)
 Ensure the data described by a given packet is reference counted. More...
int av_packet_make_writable (AVPacket *pkt)
 Create a writable reference for the data described by a given packet, avoiding data copy if possible. More...
void av_packet_rescale_ts (AVPacket *pkt, AVRational tb_src, AVRational tb_dst)
 Convert valid timing fields (timestamps / durations) in a packet from one timebase to another. More...

Detailed Description

Types and functions for working with AVPacket.

Macro Definition Documentation



Definition at line 313 of file packet.h.


#define AV_PKT_FLAG_KEY   0x0001

The packet contains a keyframe.

Definition at line 429 of file packet.h.


#define AV_PKT_FLAG_CORRUPT   0x0002

The packet content is corrupted.

Definition at line 430 of file packet.h.


#define AV_PKT_FLAG_DISCARD   0x0004

Flag is used to discard packets which are required to maintain valid decoder state but are not required for output and should be dropped after decoding.

Definition at line 436 of file packet.h.


#define AV_PKT_FLAG_TRUSTED   0x0008

The packet comes from a trusted source.

Otherwise-unsafe constructs such as arbitrary pointers to data outside the packet may be followed.

Definition at line 443 of file packet.h.


#define AV_PKT_FLAG_DISPOSABLE   0x0010

Flag is used to indicate packets that contain frames that can be discarded by the decoder.

I.e. Non-reference frames.

Definition at line 448 of file packet.h.

Enumeration Type Documentation

◆ AVPacketSideDataType


An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette.

This side data signals that a new palette is present.


The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was changed and the receiving side should act upon it appropriately.

The new extradata is embedded in the side data buffer and should be immediately used for processing the current frame or packet.


An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:

u32le param_flags
s32le channel_count
u64le channel_layout
s32le sample_rate
s32le width
s32le height

An AV_PKT_DATA_H263_MB_INFO side data packet contains a number of structures with info about macroblocks relevant to splitting the packet into smaller packets on macroblock edges (e.g.

as for RFC 2190). That is, it does not necessarily contain info about all macroblocks, as long as the distance between macroblocks in the info is smaller than the target payload size. Each MB info structure is 12 bytes, and is laid out as follows:

u32le bit offset from the start of the packet
u8 current quantizer at the start of the macroblock
u8 GOB number
u16le macroblock address within the GOB
u8 horizontal MV predictor
u8 vertical MV predictor
u8 horizontal MV predictor for block number 3
u8 vertical MV predictor for block number 3

This side data should be associated with an audio stream and contains ReplayGain information in form of the AVReplayGain struct.


This side data contains a 3x3 transformation matrix describing an affine transformation that needs to be applied to the decoded video frames for correct presentation.

See libavutil/display.h for a detailed description of the data.


This side data should be associated with a video stream and contains Stereoscopic 3D information in form of the AVStereo3D struct.


This side data should be associated with an audio stream and corresponds to enum AVAudioServiceType.


This side data contains quality related information from the encoder.

u32le quality factor of the compressed frame. Allowed range is between 1 (good) and FF_LAMBDA_MAX (bad).
u8 picture type
u8 error count
u16 reserved
u64le[error count] sum of squared differences between encoder in and output

This side data contains an integer value representing the stream index of a "fallback" track.

A fallback track indicates an alternate track to use when the current track can not be decoded for some reason. e.g. no decoder available for codec.


This side data corresponds to the AVCPBProperties struct.


Recommmends skipping the specified number of samples.

u32le number of samples to skip from start of this packet
u32le number of samples to skip from end of this packet
u8 reason for start skip
u8 reason for end skip (0=padding silence, 1=convergence)

An AV_PKT_DATA_JP_DUALMONO side data packet indicates that the packet may contain "dual mono" audio specific to Japanese DTV and if it is true, recommends only the selected channel to be used.

u8 selected channels (0=main/left, 1=sub/right, 2=both)

A list of zero terminated key/value strings.

There is no end marker for the list, so it is required to rely on the side data size to stop.


Subtitle event position.

u32le x1
u32le y1
u32le x2
u32le y2

Data found in BlockAdditional element of matroska container.

There is no end marker for the data, so it is required to rely on the side data size to recognize the end. 8 byte id (as found in BlockAddId) followed by data.


The optional first identifier line of a WebVTT cue.


The optional settings (rendering instructions) that immediately follow the timestamp specifier of a WebVTT cue.


A list of zero terminated key/value strings.

There is no end marker for the list, so it is required to rely on the side data size to stop. This side data includes updated metadata which appeared in the stream.


MPEGTS stream ID as uint8_t, this is required to pass the stream ID information from the demuxer to the corresponding muxer.


Mastering display metadata (based on SMPTE-2086:2014).

This metadata should be associated with a video stream and contains data in the form of the AVMasteringDisplayMetadata struct.


This side data should be associated with a video stream and corresponds to the AVSphericalMapping structure.


Content light level (based on CTA-861.3).

This metadata should be associated with a video stream and contains data in the form of the AVContentLightMetadata struct.


ATSC A53 Part 4 Closed Captions.

This metadata should be associated with a video stream. A53 CC bitstream is stored as uint8_t in AVPacketSideData.data. The number of bytes of CC data is AVPacketSideData.size.


This side data is encryption initialization data.

The format is not part of ABI, use av_encryption_init_info_* methods to access.


This side data contains encryption info for how to decrypt the packet.

The format is not part of ABI, use av_encryption_info_* methods to access.


Active Format Description data consisting of a single byte as specified in ETSI TS 101 154 using AVActiveFormatDescription enum.


Producer Reference Time data corresponding to the AVProducerReferenceTime struct, usually exported by some encoders (on demand through the prft flag set in the AVCodecContext export_side_data field).


ICC profile data consisting of an opaque octet buffer following the format described by ISO 15076-1.


DOVI configuration ref: dolby-vision-bitstreams-within-the-iso-base-media-file-format-v2.1.2, section 2.2 dolby-vision-bitstreams-in-mpeg-2-transport-stream-multiplex-v1.2, section 3.3 Tags are stored in struct AVDOVIDecoderConfigurationRecord.


Timecode which conforms to SMPTE ST 12-1:2014.

The data is an array of 4 uint32_t where the first uint32_t describes how many (1-3) of the other timecodes are used. The timecode format is described in the documentation of av_timecode_get_smpte_from_framenum() function in libavutil/timecode.h.


HDR10+ dynamic metadata associated with a video frame.

The metadata is in the form of the AVDynamicHDRPlus struct and contains information for color volume transform - application 4 of SMPTE 2094-40:2016 standard.


The number of side data types.

This is not part of the public API/ABI in the sense that it may change when new side data types are added. This must stay the last enum value. If its value becomes huge, some code using it needs to be updated as it assumes it to be smaller than other limits.

Definition at line 41 of file packet.h.

◆ AVSideDataParamChangeFlags


Definition at line 450 of file packet.h.

Function Documentation

◆ av_packet_alloc()

AVPacket* av_packet_alloc ( void  )

Allocate an AVPacket and set its fields to default values.

The resulting struct must be freed using av_packet_free().

An AVPacket filled with default values or NULL on failure.
this only allocates the AVPacket itself, not the data buffers. Those must be allocated through other means such as av_new_packet.
See also

Definition at line 63 of file avpacket.c.

Referenced by add_stream(), alloc_packet(), amv_init(), apng_write_packet(), asf_read_stream_properties(), asf_read_timestamp(), av1_frame_merge_init(), av1_frame_split_init(), av_bsf_alloc(), av_packet_clone(), avcodec_open2(), avformat_alloc_context(), bsf_init(), config_input(), config_props(), cri_decode_init(), dec_alloc(), dec_thread_init(), decoder_init(), ds_open(), enc_alloc(), encode_write(), estimate_best_b_count(), evc_frame_merge_init(), ff_alsa_open(), ff_bsf_get_packet(), ff_decode_preinit(), ff_frame_thread_encoder_init(), ff_reshuffle_raw_rgb(), ff_subtitles_queue_insert(), ff_vaapi_encode_init(), frame_merge_init(), ftr_init(), gif_write_packet(), handle_eac3(), init(), init_filters(), init_packet(), init_thread(), initialize_fifo_tst_muxer_chain(), input_packet_process(), input_thread(), libdav1d_receive_frame_internal(), LLVMFuzzerTestOneInput(), main(), moflex_read_sync(), mov_init(), movie_common_init(), mpegts_get_dts(), muxer_thread(), new_playlist(), ost_add(), packet_queue_put(), qt_rtp_init(), queue_packet(), read_gab2_sub(), read_interval_packets(), read_thread(), rtp_mpegts_write_header(), run_test(), seek_test(), setts_init(), setup_sync_queues(), tdsc_init(), tiff_init(), transcode_subtitles(), video_decode(), video_decode_example(), vp9_superframe_init(), vp9_superframe_split_init(), wc3_read_header(), webp_decode_init(), and xvid_encode_init().

◆ av_packet_clone()

AVPacket* av_packet_clone ( const AVPacket src)

Create a new packet that references the same data as src.

This is a shortcut for av_packet_alloc()+av_packet_ref().

newly created AVPacket on success, NULL on error.
See also

Definition at line 467 of file avpacket.c.

Referenced by decklink_write_video_packet(), flac_write_packet(), and main().

◆ av_packet_free()

void av_packet_free ( AVPacket **  pkt)

Free the packet, if the packet is reference counted, it will be unreferenced first.

pktpacket to be freed. The pointer will be set to NULL.
passing NULL is a no-op.

Definition at line 74 of file avpacket.c.

Referenced by amv_deinit(), apng_deinit(), asf_read_close(), asf_read_timestamp(), av1_frame_merge_close(), av1_frame_split_close(), av_bsf_free(), av_packet_clone(), avcodec_close(), avformat_free_context(), avi_read_close(), avi_write_packet(), close_stream(), cri_decode_close(), dec_free(), dec_thread_uninit(), decklink_write_video_packet(), decode_audio_frame(), decoder_destroy(), drop_dups(), ds_free(), dts2pts_filter(), dts2pts_flush(), enc_free(), encode_audio_frame(), encode_write(), estimate_best_b_count(), evc_frame_merge_close(), ff_alsa_close(), ff_frame_thread_encoder_free(), ff_frame_thread_free(), ff_reshuffle_raw_rgb(), ff_subtitles_queue_clean(), ff_subtitles_queue_insert(), ff_vaapi_encode_close(), filter(), flac_deinit(), frame_merge_close(), free_packet(), free_playlist_list(), ftr_close(), gif_write_trailer(), h264_filter(), h264_mp4toannexb_filter(), hevc_mp4toannexb_filter(), imx_dump_header(), input_packet_process(), input_thread(), libdav1d_receive_frame_internal(), libdav1d_user_data_free(), LLVMFuzzerTestOneInput(), main(), mjpeg2jpeg_filter(), mjpega_dump_header(), moflex_read_close(), mov_free(), mov_write_packet(), movie_uninit(), mp3_header_decompress(), mpegts_get_dts(), muxer_thread(), new_playlist(), of_free(), ost_free(), packet_queue_flush(), packet_queue_get(), packet_queue_put(), process_input(), qt_rtp_close(), read_gab2_sub(), read_interval_packets(), read_thread(), decklink_frame::Release(), rtp_mpegts_write_close(), run_test(), seek_test(), setts_close(), tdsc_close(), text2movsub(), thread_start(), thread_stop(), tiff_end(), transcode_subtitles(), uninit(), video_decode(), video_decode_example(), vp9_raw_reorder_filter(), vp9_raw_reorder_frame_free(), vp9_superframe_close(), vp9_superframe_split_uninit(), vvc_mp4toannexb_filter(), wc3_read_close(), webp_decode_close(), and xvid_encode_init().

◆ av_new_packet()

int av_new_packet ( AVPacket pkt,
int  size 

Allocate the payload of a packet and initialize its fields with default values.

sizewanted payload size
0 if OK, AVERROR_xxx otherwise

Definition at line 98 of file avpacket.c.

Referenced by aac_parse_packet(), ac3_handle_packet(), amr_handle_packet(), amv_init(), ape_read_packet(), asf_parse_packet(), asf_read_replicated_data(), asf_read_single_payload(), audio_read_packet(), avf_read_packet(), avisynth_read_packet_audio(), avisynth_read_packet_video(), avs_read_video_packet(), binka_read_packet(), bmv_read_packet(), callback(), cdxl_read_packet(), cin_read_packet(), create_subcc_packet(), decode_frame(), demux_audio(), demux_video(), dsf_read_packet(), dss_723_1_read_packet(), dss_sp_read_packet(), dump_extradata(), dxa_read_packet(), enc_subtitle(), encode_frame(), fbdev_read_packet(), ff_h263_handle_packet(), ff_h264_handle_aggregated_packet(), ff_h264_handle_frag_packet(), ff_img_read_packet(), ff_raw_read_partial_packet(), ff_reshuffle_raw_rgb(), ff_rm_retrieve_cache(), ff_spdif_read_packet(), ff_subtitles_queue_insert(), filter(), fits_read_packet(), fourxm_read_packet(), fsb_read_packet(), g723_1_read_packet(), gdigrab_read_packet(), genh_read_packet(), get_eia608_packet(), gif_read_packet(), grab_read_packet(), h264_handle_packet(), h264_mp4toannexb_filter(), hevc_handle_packet(), image_available(), imx_dump_header(), jpegxl_anim_read_packet(), laf_read_packet(), latm_parse_packet(), lavfi_read_packet(), LLVMFuzzerTestOneInput(), load_ipmovie_packet(), lxf_read_packet(), main(), merge_superframe(), mjpeg2jpeg_filter(), mjpega_dump_header(), mmap_read_frame(), modplug_read_packet(), mp3_header_decompress(), mpa_robust_parse_packet(), mpc_read_packet(), mpeg_parse_packet(), mpegts_raw_read_packet(), mxg_read_packet(), nuv_packet(), ogg_read_packet(), pp_bnk_read_packet(), prepare_packet(), pulse_read_packet(), qdm2_restore_block(), qt_rtp_parse_packet(), read_frame(), read_packet(), read_packet_gme(), read_packet_openmpt(), rechunk_filter(), recode_subtitle(), return_stored_frame(), rm_assemble_video_frame(), rm_read_audio_stream_info(), roq_read_packet(), rsd_read_packet(), rtp_parse_packet_internal(), sbg_read_packet(), sdr2_read_packet(), sds_read_packet(), seq_read_packet(), sga_audio_packet(), sga_video_packet(), siff_read_packet(), smacker_read_packet(), store_packet(), str_read_packet(), supply_new_packets(), swf_read_packet(), text2movsub(), vc2hq_handle_sequence_header(), vc2hq_mark_end_of_sequence(), videostream_cb(), vmd_read_packet(), vp9_raw_reorder_make_output(), vpk_read_packet(), vqf_read_packet(), wsaud_read_packet(), wv_read_packet(), xiph_handle_packet(), and yop_read_packet().

◆ av_shrink_packet()

void av_shrink_packet ( AVPacket pkt,
int  size 

◆ av_grow_packet()

int av_grow_packet ( AVPacket pkt,
int  grow_by 

Increase packet size, correctly zeroing padding.

grow_bynumber of bytes by which to increase the size of the packet

Definition at line 121 of file avpacket.c.

Referenced by append_au(), append_packet_chunked(), encode_frame(), ff_subtitles_queue_insert(), frame_merge_filter(), ftr_decode_frame(), handle_eac3(), hevc_mp4toannexb_filter(), main(), stream_seek(), stream_skip(), stream_write(), vvc_mp4toannexb_filter(), and wv_read_packet().

◆ av_packet_from_data()

int av_packet_from_data ( AVPacket pkt,
uint8_t *  data,
int  size 

Initialize a reference-counted packet from av_malloc()ed data.

pktpacket to be initialized. This function will set the data, size, and buf fields, all others are left untouched.
dataData allocated by av_malloc() to be used as packet data. If this function returns successfully, the data is owned by the underlying AVBuffer. The caller may not access the data through other means.
sizesize of data in bytes, without the padding. I.e. the full buffer size is assumed to be size + AV_INPUT_BUFFER_PADDING_SIZE.
0 on success, a negative AVERROR on error

Definition at line 172 of file avpacket.c.

Referenced by asf_deinterleave(), ff_mov_generate_squashed_ttml_packet(), ff_rtp_finalize_packet(), iec61883_parse_queue_dv(), main(), omx_encode_frame(), qt_rtp_parse_packet(), and rfc4175_finalize_packet().

◆ av_packet_new_side_data()

uint8_t* av_packet_new_side_data ( AVPacket pkt,
enum AVPacketSideDataType  type,
size_t  size 

◆ av_packet_add_side_data()

int av_packet_add_side_data ( AVPacket pkt,
enum AVPacketSideDataType  type,
uint8_t *  data,
size_t  size 

Wrap an existing array as a packet side data.

typeside information type
datathe side data array. It must be allocated with the av_malloc() family of functions. The ownership of the data is transferred to pkt.
sizeside information size
a non-negative number on success, a negative AVERROR code on failure. On failure, the packet is unchanged and the data remains owned by the caller.

Definition at line 197 of file avpacket.c.

Referenced by aax_read_packet(), add_filename_as_pkt_side_data(), av_packet_new_side_data(), cenc_filter(), concat_read_packet(), extract_extradata_filter(), ff_mpv_encode_picture(), flv_read_packet(), get_metadata(), h264_metadata_handle_display_orientation(), lavfi_read_packet(), ogg_read_packet(), setup_side_data_entry(), and decklink_input_callback::VideoInputFrameArrived().

◆ av_packet_shrink_side_data()

int av_packet_shrink_side_data ( AVPacket pkt,
enum AVPacketSideDataType  type,
size_t  size 

Shrink the already allocated side data buffer.

typeside information type
sizenew side information size
0 on success, < 0 on failure

Definition at line 370 of file avpacket.c.

Referenced by ff_mpv_encode_picture().

◆ av_packet_get_side_data()

uint8_t* av_packet_get_side_data ( const AVPacket pkt,
enum AVPacketSideDataType  type,
size_t *  size 

◆ av_packet_side_data_name()

const char* av_packet_side_data_name ( enum AVPacketSideDataType  type)

Definition at line 269 of file avpacket.c.

Referenced by print_pkt_side_data(), and setup_side_data_entry().

◆ av_packet_pack_dictionary()

uint8_t* av_packet_pack_dictionary ( AVDictionary dict,
size_t *  size 

Pack a dictionary for use in side_data.

dictThe dictionary to pack.
sizepointer to store the size of the returned data
pointer to data if successful, NULL otherwise

Definition at line 308 of file avpacket.c.

Referenced by add_filename_as_pkt_side_data(), concat_read_packet(), lavfi_read_packet(), decklink_input_callback::VideoInputFrameArrived(), and vorbis_update_metadata().

◆ av_packet_unpack_dictionary()

int av_packet_unpack_dictionary ( const uint8_t *  data,
size_t  size,
AVDictionary **  dict 

Unpack a dictionary from side_data.

datadata from side_data
sizesize of the data
dictthe metadata storage dictionary
0 on success, < 0 on failure

Definition at line 343 of file avpacket.c.

Referenced by add_metadata_from_side_data(), ff_decklink_read_packet(), and show_packet().

◆ av_packet_free_side_data()

void av_packet_free_side_data ( AVPacket pkt)

Convenience function to free all the side data stored.

All the other fields stay untouched.


Definition at line 188 of file avpacket.c.

Referenced by av_packet_copy_props(), and av_packet_unref().

◆ av_packet_ref()

int av_packet_ref ( AVPacket dst,
const AVPacket src 

Setup a new reference to the data described by a given packet.

If src is reference-counted, setup dst as a new reference to the buffer in src. Otherwise allocate a new buffer in dst and copy the data from src into it.

All the other fields are copied from src.

See also
dstDestination packet. Will be completely overwritten.
srcSource packet
0 on success, a negative AVERROR on error. On error, dst will be blank (as if returned by av_packet_alloc()).

Definition at line 431 of file avpacket.c.

Referenced by amv_write_packet(), apng_write_packet(), av1_frame_split_filter(), av_packet_clone(), avcodec_send_packet(), avformat_queue_attached_pictures(), dec_packet(), evc_frame_merge_filter(), extract_extradata(), ff_subtitles_queue_read_packet(), ffat_decode(), fifo_write_packet(), flush_packet(), gif_write_packet(), handle_eac3(), mkv_write_packet(), mov_write_packet(), of_streamcopy(), qsv_decode_frame(), read_thread(), rechunk_filter(), setts_filter(), stream_params_copy(), submit_packet(), tee_write_packet(), vp9_superframe_split_filter(), webp_write_packet(), write_muxed_file(), and write_packet().

◆ av_packet_unref()

void av_packet_unref ( AVPacket pkt)

Wipe the packet.

Unreference the buffer referenced by the packet and reset the remaining packet fields to their default values.

pktThe packet to be unreferenced.

Definition at line 423 of file avpacket.c.

Referenced by aac_adtstoasc_filter(), activate(), adts_aac_read_packet(), amv_write_packet(), android_camera_read_close(), append_packet_chunked(), asf_deinterleave(), asf_parse_packet(), asf_read_header(), asf_read_pts(), asf_read_timestamp(), asf_reset_header(), asfrtp_parse_packet(), audio_read_packet(), av1_frame_merge_filter(), av1_frame_merge_flush(), av1_frame_split_filter(), av1_frame_split_flush(), av1_receive_frame(), av1_receive_frame_internal(), av_bsf_flush(), av_bsf_send_packet(), av_get_packet(), av_interleaved_write_frame(), av_packet_free(), av_packet_ref(), av_read_frame(), av_write_frame(), av_write_trailer(), avcodec_decode_subtitle2(), avcodec_flush_buffers(), avcodec_receive_packet(), avformat_find_stream_info(), avi_read_packet(), avisynth_read_packet_audio(), avisynth_read_packet_video(), avpriv_packet_list_free(), binkaudio_receive_frame(), bsf_list_filter(), combine_au(), compute_crc_of_packets(), concat_read_packet(), cri_decode_frame(), crystalhd_receive_frame(), cuvid_output_frame(), dec_packet(), decode_frame(), decode_get_packet(), decode_simple_internal(), decoder_decode_frame(), decoder_thread(), demux_audio(), dng_decode_jpeg(), ds_run(), dshow_read_close(), dts2pts_filter(), dump_extradata(), dv_error_marker_filter(), ea_read_packet(), eac3_core_filter(), encode(), encode_frame(), encode_receive_packet_internal(), encode_write(), encode_write_frame(), estimate_best_b_count(), estimate_timings_from_pts(), evc_frame_merge_filter(), evc_frame_merge_flush(), extract_extradata(), extract_extradata_filter(), extract_packet_props(), failing_write_packet(), ff_add_attached_pic(), ff_cbs_bsf_generic_filter(), ff_decklink_packet_queue_flush(), ff_decklink_packet_queue_put(), ff_decode_flush_buffers(), ff_decode_get_packet(), ff_encode_encode_cb(), ff_free_stream(), ff_get_encode_buffer(), ff_interleave_add_packet(), ff_interleave_packet_per_dts(), ff_load_image(), ff_mov_add_hinted_packet(), ff_qsv_enc_close(), ff_raw_read_partial_packet(), ff_read_packet(), ff_rm_free_rmstream(), ff_rtp_finalize_packet(), ff_v4l2_buffer_buf_to_avpkt(), ffat_close_decoder(), ffat_decode(), ffat_decode_callback(), ffat_decode_flush(), ffmmal_add_packet(), fifo_basic_test(), fifo_overflow_drop_test(), fifo_thread_recover(), fifo_thread_write_packet(), fifo_write_packet(), filter(), filter_1phase(), filter_frame(), filter_units_filter(), flac_finish_header(), flac_queue_flush(), flac_read_timestamp(), flush(), flush_packet(), flv_read_packet(), fourxm_read_packet(), frame_merge_filter(), frame_merge_flush(), free_message(), free_pkt_fifo(), gif_read_packet(), gif_write_packet(), h264_mp4toannexb_filter(), handle_eac3(), handle_id3(), hapqa_extract(), hevc_mp4toannexb_filter(), hls_read_packet(), hls_read_seek(), iec61883_parse_queue_dv(), image_available(), imx_dump_header(), input_packet_process(), input_thread(), interleaved_write_packet(), libjxl_receive_frame(), LLVMFuzzerTestOneInput(), main(), mediacodec_decode_close(), mediacodec_decode_flush(), mediacodec_receive_frame(), mjpeg2jpeg_filter(), mjpega_dump_header(), mkv_write_packet(), mmap_read_frame(), mov2textsub(), mov_create_chapter_track(), mov_create_timecode_track(), mov_read_packet(), mov_write_squashed_packet(), mov_write_subtitle_end_packet(), mov_write_ttml_document_from_queue(), mp3_header_decompress(), mp3_queue_flush(), mpa_robust_parse_packet(), mpc_read_seek(), mpeg4_unpack_bframes_filter(), mpegts_get_dts(), mpegts_read_packet(), mpegts_write_packet_internal(), mux_frames(), muxer_thread(), mxf_interleave_get_packet(), new_data_packet(), new_pes_packet(), noise(), nsv_read_close(), of_streamcopy(), osq_receive_frame(), packet_queue_put(), parse_packet(), prores_metadata(), pulse_read_packet(), qsv_clear_buffers(), qsv_decode_frame(), qt_rtp_parse_packet(), read_frame_internal(), read_gab2_sub(), read_interval_packets(), read_packet(), read_thread(), rechunk_filter(), recode_subtitle(), reset_packet(), rm_assemble_video_frame(), rm_read_packet(), rtp_mpegts_write_packet(), run_test(), decklink_output_callback::ScheduledFrameCompleted(), seek_frame_generic(), seek_subtitle(), set_output_frame(), setts_filter(), signal_init_ts(), storeframe(), str_read_close(), str_read_packet(), stream_params_copy(), submit_packet(), tdsc_decode_jpeg_tile(), tee_write_packet(), text2movsub(), thread_submit_packet(), trace_headers(), truehd_core_filter(), tta_encode_frame(), tta_queue_flush(), update_context_from_user(), v4l2_m2m_destroy_context(), v4l2_receive_frame(), vfw_read_close(), video_decode(), video_decode_example(), vp8_lossy_decode_frame(), vp9_superframe_filter(), vp9_superframe_flush(), vp9_superframe_split_filter(), vp9_superframe_split_flush(), vtenc_frame(), vvc_mp4toannexb_filter(), vvc_parser_close(), write_muxed_file(), write_packet(), write_packets_from_bsfs(), write_trailer(), xiph_handle_packet(), yop_read_close(), yop_read_packet(), and yop_read_seek().

◆ av_packet_move_ref()

void av_packet_move_ref ( AVPacket dst,
AVPacket src 

◆ av_packet_copy_props()

int av_packet_copy_props ( AVPacket dst,
const AVPacket src 

Copy only "properties" fields from src to dst.

Properties for the purpose of this function are all the fields beside those related to the packet data (buf, data, size)

dstDestination packet
srcSource packet
0 on success AVERROR on failure.

Definition at line 386 of file avpacket.c.

Referenced by av_packet_ref(), av_write_frame(), dump_extradata(), extract_packet_props(), ff_reshuffle_raw_rgb(), filter(), frame_merge_filter(), h264_mp4toannexb_filter(), hevc_mp4toannexb_filter(), imx_dump_header(), mjpeg2jpeg_filter(), mjpega_dump_header(), mp3_header_decompress(), rechunk_filter(), recode_subtitle(), text2movsub(), update_context_from_user(), vp9_superframe_filter(), and vvc_mp4toannexb_filter().

◆ av_packet_make_refcounted()

int av_packet_make_refcounted ( AVPacket pkt)

Ensure the data described by a given packet is reference counted.

This function does not ensure that the reference will be writable. Use av_packet_make_writable instead for that purpose.
See also
pktpacket whose data should be made reference counted.
0 on success, a negative AVERROR on error. On failure, the packet is unchanged.

Definition at line 486 of file avpacket.c.

Referenced by av_bsf_send_packet(), avpriv_packet_list_put(), ff_decklink_packet_queue_put(), ff_interleave_add_packet(), ff_read_packet(), ffmmal_add_packet(), LLVMFuzzerTestOneInput(), parse_packet(), prepare_input_packet(), and queue_packet().

◆ av_packet_make_writable()

int av_packet_make_writable ( AVPacket pkt)

Create a writable reference for the data described by a given packet, avoiding data copy if possible.

pktPacket whose data should be made writable.
0 on success, a negative AVERROR on failure. On failure, the packet is unchanged.

Definition at line 505 of file avpacket.c.

Referenced by decode_frame(), dv_error_marker_filter(), ftr_decode_frame(), imm5_decode_frame(), mov_write_packet(), mpeg4_unpack_bframes_filter(), noise(), prores_metadata(), and truehd_core_filter().

◆ av_packet_rescale_ts()

void av_packet_rescale_ts ( AVPacket pkt,
AVRational  tb_src,
AVRational  tb_dst 

Convert valid timing fields (timestamps / durations) in a packet from one timebase to another.

Timestamps with unknown values (AV_NOPTS_VALUE) will be ignored.

pktpacket on which the conversion will be performed
tb_srcsource timebase, in which the timing fields in pkt are expressed
tb_dstdestination timebase, to which the timing fields will be converted

Definition at line 527 of file avpacket.c.

Referenced by encode_write(), encode_write_frame(), ff_write_chained(), fifo_thread_write_packet(), main(), mov_write_ttml_document_from_queue(), of_output_packet(), rechunk_filter(), tee_write_packet(), write_frame(), write_packet(), and write_packets_from_bsfs().