FFmpeg
ffmpeg.h
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #ifndef FFTOOLS_FFMPEG_H
20 #define FFTOOLS_FFMPEG_H
21 
22 #include "config.h"
23 
24 #include <stdatomic.h>
25 #include <stdint.h>
26 #include <stdio.h>
27 #include <signal.h>
28 
29 #include "cmdutils.h"
30 #include "sync_queue.h"
31 
32 #include "libavformat/avformat.h"
33 #include "libavformat/avio.h"
34 
35 #include "libavcodec/avcodec.h"
36 #include "libavcodec/bsf.h"
37 
38 #include "libavfilter/avfilter.h"
39 
40 #include "libavutil/avutil.h"
41 #include "libavutil/dict.h"
42 #include "libavutil/eval.h"
43 #include "libavutil/fifo.h"
44 #include "libavutil/hwcontext.h"
45 #include "libavutil/pixfmt.h"
46 #include "libavutil/rational.h"
47 #include "libavutil/thread.h"
49 
51 
52 // deprecated features
53 #define FFMPEG_OPT_PSNR 1
54 #define FFMPEG_OPT_MAP_CHANNEL 1
55 #define FFMPEG_OPT_MAP_SYNC 1
56 #define FFMPEG_ROTATION_METADATA 1
57 
59  VSYNC_AUTO = -1,
65 };
66 
67 #define MAX_STREAMS 1024 /* arbitrary sanity check value */
68 
69 enum HWAccelID {
73 };
74 
75 typedef struct HWDevice {
76  const char *name;
79 } HWDevice;
80 
81 /* select an input stream for an output stream */
82 typedef struct StreamMap {
83  int disabled; /* 1 is this mapping is disabled by a negative map */
86  char *linklabel; /* name of an output link, for mapping lavfi outputs */
87 } StreamMap;
88 
89 #if FFMPEG_OPT_MAP_CHANNEL
90 typedef struct {
91  int file_idx, stream_idx, channel_idx; // input
92  int ofile_idx, ostream_idx; // output
94 #endif
95 
96 typedef struct OptionsContext {
98 
99  /* input/output options */
100  int64_t start_time;
101  int64_t start_time_eof;
103  const char *format;
104 
121 
122  /* input options */
124  int loop;
125  int rate_emu;
126  float readrate;
131 
144 
145  /* output options */
148 #if FFMPEG_OPT_MAP_CHANNEL
149  AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
150  int nb_audio_channel_maps; /* number of (valid) -map_channel settings */
151 #endif
152  const char **attachments;
154 
156 
157  int64_t recording_time;
158  int64_t stop_time;
159  int64_t limit_filesize;
160  float mux_preload;
163  int shortest;
164  int bitexact;
165 
170 
171  /* indexed by output file stream index */
174 
230  int nb_pass;
240  int nb_apad;
256 
257 typedef struct InputFilter {
259  struct InputStream *ist;
261  uint8_t *name;
262  enum AVMediaType type; // AVMEDIA_TYPE_SUBTITLE for sub2video
263 
265 
266  // parameters configured for this input
267  int format;
268 
269  int width, height;
271 
274 
277 
278  int eof;
279 } InputFilter;
280 
281 typedef struct OutputFilter {
283  struct OutputStream *ost;
285  uint8_t *name;
286 
287  /* temporary storage until stream maps are processed */
290 
291  /* desired output stream properties */
292  int width, height;
294  int format;
297 
298  // those are only set if no format is specified and the encoder gives us multiple options
299  // They point directly to the relevant lists of the encoder.
300  const int *formats;
302  const int *sample_rates;
303 } OutputFilter;
304 
305 typedef struct FilterGraph {
306  int index;
307  const char *graph_desc;
308 
311  // true when the filtergraph contains only meta filters
312  // that do not modify the frame data
313  int is_meta;
314 
319 } FilterGraph;
320 
321 typedef struct InputStream {
324  int discard; /* true if stream data should be discarded */
326  int decoding_needed; /* non zero if the packets must be decoded in 'raw_fifo', see DECODING_FOR_* */
327 #define DECODING_FOR_OST 1
328 #define DECODING_FOR_FILTER 2
329  int processing_needed; /* non zero if the packets must be processed */
330 
331  /**
332  * Codec parameters - to be used by the decoding/streamcopy code.
333  * st->codecpar should not be accessed, because it may be modified
334  * concurrently by the demuxing thread.
335  */
338  const AVCodec *dec;
341 
343 
344  int64_t prev_pkt_pts;
345  int64_t start; /* time when read started */
346  /* predicted dts of the next packet read for this stream or (when there are
347  * several frames in a packet) of the next frame in current packet (in AV_TIME_BASE units) */
348  int64_t next_dts;
349  int64_t first_dts; ///< dts of the first packet read for this stream (in AV_TIME_BASE units)
350  int64_t dts; ///< dts of the last packet read for this stream (in AV_TIME_BASE units)
351 
352  int64_t next_pts; ///< synthetic pts for the next decode frame (in AV_TIME_BASE units)
353  int64_t pts; ///< current pts of the decoded frame (in AV_TIME_BASE units)
355 
356  // the value of AVCodecParserContext.repeat_pict from the AVStream parser
357  // for the last packet returned from ifile_get_packet()
358  // -1 if unknown
359  // FIXME: this is a hack, the avstream parser should not be used
361 
363 
364  int64_t min_pts; /* pts with the smallest value in a current stream */
365  int64_t max_pts; /* pts with the higher value in a current stream */
366 
367  // when forcing constant input framerate through -r,
368  // this contains the pts that will be given to the next decoded frame
369  int64_t cfr_next_pts;
370 
371  int64_t nb_samples; /* number of samples in the last decoded audio frame before looping */
372 
373  double ts_scale;
376  AVRational framerate; /* framerate forced with -r */
379 
381 
383  struct { /* previous decoded subtitle and related variables */
385  int ret;
387  } prev_sub;
388 
389  struct sub2video {
390  int64_t last_pts;
391  int64_t end_pts;
392  AVFifo *sub_queue; ///< queue of AVSubtitle* before filter init
394  int w, h;
395  unsigned int initialize; ///< marks if sub2video_update should force an initialization
396  } sub2video;
397 
398  /* decoded data from this stream goes into all those filters
399  * currently video and audio only */
402 
404 
405  /* hwaccel options */
410 
413 
414  /* stats */
415  // combined size of all the packets read
416  uint64_t data_size;
417  /* number of packets successfully read for this stream */
418  uint64_t nb_packets;
419  // number of frames/samples retrieved from the decoder
420  uint64_t frames_decoded;
421  uint64_t samples_decoded;
422 
423  int64_t *dts_buffer;
425 
426  int got_output;
427 } InputStream;
428 
429 typedef struct LastFrameDuration {
431  int64_t duration;
433 
434 typedef struct InputFile {
435  int index;
436 
438  int eof_reached; /* true if eof reached */
439  int eagain; /* true if last read attempt returned EAGAIN */
442  /**
443  * Effective format start time based on enabled streams.
444  */
446  int64_t ts_offset;
447  /**
448  * Extra timestamp offset added by discontinuity handling.
449  */
451  int64_t last_ts;
452  int64_t start_time; /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */
453  int64_t recording_time;
454 
455  /* streams that ffmpeg is aware of;
456  * there may be extra streams in ctx that are not mapped to an InputStream
457  * if new streams appear dynamically during demuxing */
460 
461  int rate_emu;
462  float readrate;
464 
465  /* when looping the input file, this queue is used by decoders to report
466  * the last frame duration back to the demuxer thread */
469 } InputFile;
470 
478 };
479 
480 #define ABORT_ON_FLAG_EMPTY_OUTPUT (1 << 0)
481 #define ABORT_ON_FLAG_EMPTY_OUTPUT_STREAM (1 << 1)
482 
483 extern const char *const forced_keyframes_const_names[];
484 
485 typedef enum {
488 } OSTFinished ;
489 
490 enum {
493 };
494 
495 typedef struct KeyframeForceCtx {
496  int type;
497 
498  int64_t ref_pts;
499 
500  // timestamps of the forced keyframes, in AV_TIME_BASE_Q
501  int64_t *pts;
502  int nb_pts;
503  int index;
504 
507 
510 
511 typedef struct OutputStream {
512  int file_index; /* file index */
513  int index; /* stream index in the output file */
514 
515  /* input stream that is the source for this output stream;
516  * may be NULL for streams with no well-defined source, e.g.
517  * attachments or outputs from complex filtergraphs */
519 
520  AVStream *st; /* stream in the output file */
521  /* number of frames emitted by the video-encoding sync code */
523  /* predicted pts of the next frame to be encoded
524  * audio/video encoding only */
525  int64_t next_pts;
526  /* dts of the last packet sent to the muxing queue, in AV_TIME_BASE_Q */
527  int64_t last_mux_dts;
528  /* pts of the last frame received from the filters, in AV_TIME_BASE_Q */
530 
531  // timestamp from which the streamcopied streams should start,
532  // in AV_TIME_BASE_Q;
533  // everything before it should be discarded
534  int64_t ts_copy_start;
535 
536  // the timebase of the packets sent to the muxer
539 
545  int64_t last_dropped;
546  int64_t last_nb0_frames[3];
547 
548  /* video only */
552  int is_cfr;
555 #if FFMPEG_ROTATION_METADATA
557 #endif
559  int bitexact;
561 #if FFMPEG_ROTATION_METADATA
563 #endif
564 
566 
568 
569  /* audio only */
570 #if FFMPEG_OPT_MAP_CHANNEL
571  int *audio_channels_map; /* list of the channels id to pick from the source stream */
572  int audio_channels_mapped; /* number of channels in audio_channels_map */
573 #endif
574 
576  FILE *logfile;
577 
579  char *avfilter;
580  char *filters; ///< filtergraph associated to the -filter option
581  char *filters_script; ///< filtergraph script associated to the -filter_script option
582 
586  char *apad;
587  OSTFinished finished; /* no more packets should be written for this stream */
588  int unavailable; /* true if the steram is unavailable (possibly temporarily) */
589 
590  // init_output_stream() has been called for this stream
591  // The encoder and the bitstream filters have been initialized and the stream
592  // parameters are set in the AVStream.
594 
596 
597  const char *attachment_filename;
601 
603 
604  /* stats */
605  // combined size of all the packets sent to the muxer
606  uint64_t data_size_mux;
607  // combined size of all the packets received from the encoder
608  uint64_t data_size_enc;
609  // number of packets send to the muxer
611  // number of frames/samples sent to the encoder
612  uint64_t frames_encoded;
613  uint64_t samples_encoded;
614  // number of packets received from the encoder
615  uint64_t packets_encoded;
616 
617  /* packet quality factor */
618  int quality;
619 
620  /* packet picture type */
622 
623  /* frame encode sum of squared error values */
624  int64_t error[4];
625 
628 } OutputStream;
629 
630 typedef struct OutputFile {
631  int index;
632 
634  const char *url;
635 
638 
640 
641  int64_t recording_time; ///< desired length of the resulting file in microseconds == AV_TIME_BASE units
642  int64_t start_time; ///< start time in microseconds == AV_TIME_BASE units
643 
644  int shortest;
645  int bitexact;
646 } OutputFile;
647 
648 extern InputFile **input_files;
649 extern int nb_input_files;
650 
651 extern OutputFile **output_files;
652 extern int nb_output_files;
653 
654 extern FilterGraph **filtergraphs;
655 extern int nb_filtergraphs;
656 
657 extern char *vstats_filename;
658 extern char *sdp_filename;
659 
660 extern float audio_drift_threshold;
661 extern float dts_delta_threshold;
662 extern float dts_error_threshold;
663 
665 extern float frame_drop_threshold;
666 extern int do_benchmark;
667 extern int do_benchmark_all;
668 extern int do_hex_dump;
669 extern int do_pkt_dump;
670 extern int copy_ts;
671 extern int start_at_zero;
672 extern int copy_tb;
673 extern int debug_ts;
674 extern int exit_on_error;
675 extern int abort_on_flags;
676 extern int print_stats;
677 extern int64_t stats_period;
678 extern int qp_hist;
679 extern int stdin_interaction;
680 extern AVIOContext *progress_avio;
681 extern float max_error_rate;
682 
683 extern char *filter_nbthreads;
684 extern int filter_complex_nbthreads;
685 extern int vstats_version;
686 extern int auto_conversion_filters;
687 
688 extern const AVIOInterruptCB int_cb;
689 
690 extern const OptionDef options[];
691 extern HWDevice *filter_hw_device;
692 
693 extern unsigned nb_output_dumped;
694 extern int main_return_code;
695 
696 extern int ignore_unknown_streams;
697 extern int copy_unknown_streams;
698 
699 extern int recast_media;
700 
701 #if FFMPEG_OPT_PSNR
702 extern int do_psnr;
703 #endif
704 
705 void term_init(void);
706 void term_exit(void);
707 
708 void show_usage(void);
709 
712 
713 void assert_file_overwrite(const char *filename);
714 char *file_read(const char *filename);
716 const AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder);
717 int parse_and_set_vsync(const char *arg, int *vsync_var, int file_idx, int st_idx, int is_global);
718 
720 void check_filter_outputs(void);
724 
725 void sub2video_update(InputStream *ist, int64_t heartbeat_pts, AVSubtitle *sub);
726 
728 
729 int ffmpeg_parse_options(int argc, char **argv);
730 
731 HWDevice *hw_device_get_by_name(const char *name);
732 int hw_device_init_from_string(const char *arg, HWDevice **dev);
733 void hw_device_free_all(void);
734 
738 
740 
741 /*
742  * Initialize muxing state for the given stream, should be called
743  * after the codec/streamcopy setup has been done.
744  *
745  * Open the muxer once all the streams have been initialized.
746  */
749 int of_open(const OptionsContext *o, const char *filename);
750 void of_close(OutputFile **pof);
751 
752 /*
753  * Send a single packet to the output, applying any bitstream filters
754  * associated with the output stream. This may result in any number
755  * of packets actually being written, depending on what bitstream
756  * filters are applied. The supplied packet is consumed and will be
757  * blank (as if newly-allocated) when this function returns.
758  *
759  * If eof is set, instead indicate EOF to all bitstream filters and
760  * therefore flush any delayed packets to the output. A blank packet
761  * must be supplied in this case.
762  */
763 void of_output_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int eof);
764 int64_t of_filesize(OutputFile *of);
765 
766 int ifile_open(const OptionsContext *o, const char *filename);
767 void ifile_close(InputFile **f);
768 
769 /**
770  * Get next input packet from the demuxer.
771  *
772  * @param pkt the packet is written here when this function returns 0
773  * @return
774  * - 0 when a packet has been read successfully
775  * - 1 when stream end was reached, but the stream is looped;
776  * caller should flush decoders and read from this demuxer again
777  * - a negative error code on failure
778  */
780 
781 /* iterate over all input streams in all input files;
782  * pass NULL to start iteration */
784 
785 #define SPECIFIER_OPT_FMT_str "%s"
786 #define SPECIFIER_OPT_FMT_i "%i"
787 #define SPECIFIER_OPT_FMT_i64 "%"PRId64
788 #define SPECIFIER_OPT_FMT_ui64 "%"PRIu64
789 #define SPECIFIER_OPT_FMT_f "%f"
790 #define SPECIFIER_OPT_FMT_dbl "%lf"
791 
792 #define WARN_MULTIPLE_OPT_USAGE(name, type, so, st)\
793 {\
794  char namestr[128] = "";\
795  const char *spec = so->specifier && so->specifier[0] ? so->specifier : "";\
796  for (int _i = 0; opt_name_##name[_i]; _i++)\
797  av_strlcatf(namestr, sizeof(namestr), "-%s%s", opt_name_##name[_i], opt_name_##name[_i+1] ? (opt_name_##name[_i+2] ? ", " : " or ") : "");\
798  av_log(NULL, AV_LOG_WARNING, "Multiple %s options specified for stream %d, only the last option '-%s%s%s "SPECIFIER_OPT_FMT_##type"' will be used.\n",\
799  namestr, st->index, opt_name_##name[0], spec[0] ? ":" : "", spec, so->u.type);\
800 }
801 
802 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
803 {\
804  int _ret, _matches = 0;\
805  SpecifierOpt *so;\
806  for (int _i = 0; _i < o->nb_ ## name; _i++) {\
807  char *spec = o->name[_i].specifier;\
808  if ((_ret = check_stream_specifier(fmtctx, st, spec)) > 0) {\
809  outvar = o->name[_i].u.type;\
810  so = &o->name[_i];\
811  _matches++;\
812  } else if (_ret < 0)\
813  exit_program(1);\
814  }\
815  if (_matches > 1)\
816  WARN_MULTIPLE_OPT_USAGE(name, type, so, st);\
817 }
818 
819 #define MATCH_PER_TYPE_OPT(name, type, outvar, fmtctx, mediatype)\
820 {\
821  int i;\
822  for (i = 0; i < o->nb_ ## name; i++) {\
823  char *spec = o->name[i].specifier;\
824  if (!strcmp(spec, mediatype))\
825  outvar = o->name[i].u.type;\
826  }\
827 }
828 
829 extern const char * const opt_name_codec_names[];
830 extern const char * const opt_name_codec_tags[];
831 extern const char * const opt_name_frame_rates[];
832 extern const char * const opt_name_top_field_first[];
833 
834 #endif /* FFTOOLS_FFMPEG_H */
OptionsContext::readrate
float readrate
Definition: ffmpeg.h:126
AVSubtitle
Definition: avcodec.h:2308
OptionsContext::nb_hwaccels
int nb_hwaccels
Definition: ffmpeg.h:137
KeyframeForceCtx::pts
int64_t * pts
Definition: ffmpeg.h:501
OptionsContext::nb_codec_names
int nb_codec_names
Definition: ffmpeg.h:106
InputFilter::sample_aspect_ratio
AVRational sample_aspect_ratio
Definition: ffmpeg.h:270
AVCodec
AVCodec.
Definition: codec.h:204
OptionsContext::input_ts_offset
int64_t input_ts_offset
Definition: ffmpeg.h:123
of_open
int of_open(const OptionsContext *o, const char *filename)
Definition: ffmpeg_mux_init.c:1898
InputFile::start_time
int64_t start_time
Definition: ffmpeg.h:452
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
name
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
Definition: writing_filters.txt:88
OptionsContext::stop_time
int64_t stop_time
Definition: ffmpeg.h:158
StreamMap::file_index
int file_index
Definition: ffmpeg.h:84
KeyframeForceCtx::dropped_keyframe
int dropped_keyframe
Definition: ffmpeg.h:508
OutputStream::sq_idx_mux
int sq_idx_mux
Definition: ffmpeg.h:627
OutputFilter::graph
struct FilterGraph * graph
Definition: ffmpeg.h:284
FKF_PREV_FORCED_T
@ FKF_PREV_FORCED_T
Definition: ffmpeg.h:475
OptionsContext::canvas_sizes
SpecifierOpt * canvas_sizes
Definition: ffmpeg.h:227
InputStream::hwaccel_device
char * hwaccel_device
Definition: ffmpeg.h:408
VSYNC_VFR
@ VSYNC_VFR
Definition: ffmpeg.h:62
OptionsContext::dump_attachment
SpecifierOpt * dump_attachment
Definition: ffmpeg.h:134
OutputStream::attachment_filename
const char * attachment_filename
Definition: ffmpeg.h:597
OutputFilter::ch_layouts
const AVChannelLayout * ch_layouts
Definition: ffmpeg.h:301
configure_filtergraph
int configure_filtergraph(FilterGraph *fg)
Definition: ffmpeg_filter.c:962
OutputStream::ts_copy_start
int64_t ts_copy_start
Definition: ffmpeg.h:534
OptionsContext::nb_audio_sample_rate
int nb_audio_sample_rate
Definition: ffmpeg.h:112
nb_filtergraphs
int nb_filtergraphs
Definition: ffmpeg.c:142
OptionsContext::nb_max_frame_rates
int nb_max_frame_rates
Definition: ffmpeg.h:116
OptionsContext::intra_matrices
SpecifierOpt * intra_matrices
Definition: ffmpeg.h:203
InputStream::framerate_guessed
AVRational framerate_guessed
Definition: ffmpeg.h:342
InputFilter::width
int width
Definition: ffmpeg.h:269
OptionsContext::nb_time_bases
int nb_time_bases
Definition: ffmpeg.h:248
InputFilter::displaymatrix
int32_t * displaymatrix
Definition: ffmpeg.h:276
KF_FORCE_SOURCE_NO_DROP
@ KF_FORCE_SOURCE_NO_DROP
Definition: ffmpeg.h:492
FKF_PREV_FORCED_N
@ FKF_PREV_FORCED_N
Definition: ffmpeg.h:474
OptionsContext::nb_audio_ch_layouts
int nb_audio_ch_layouts
Definition: ffmpeg.h:108
FilterGraph::graph_desc
const char * graph_desc
Definition: ffmpeg.h:307
AVCodecParameters
This struct describes the properties of an encoded stream.
Definition: codec_par.h:54
InputStream::data_size
uint64_t data_size
Definition: ffmpeg.h:416
OutputStream::enc_ctx
AVCodecContext * enc_ctx
Definition: ffmpeg.h:540
OptionsContext::nb_rc_overrides
int nb_rc_overrides
Definition: ffmpeg.h:202
sub
static float sub(float src0, float src1)
Definition: dnn_backend_native_layer_mathbinary.c:31
thread.h
FilterGraph::inputs
InputFilter ** inputs
Definition: ffmpeg.h:315
OptionsContext::hwaccels
SpecifierOpt * hwaccels
Definition: ffmpeg.h:136
OptionsContext::apad
SpecifierOpt * apad
Definition: ffmpeg.h:239
KeyframeForceCtx::nb_pts
int nb_pts
Definition: ffmpeg.h:502
frame_drop_threshold
float frame_drop_threshold
Definition: ffmpeg_opt.c:71
rational.h
InputStream::dec_ctx
AVCodecContext * dec_ctx
Definition: ffmpeg.h:337
InputStream::user_set_discard
int user_set_discard
Definition: ffmpeg.h:325
OptionsContext::rc_overrides
SpecifierOpt * rc_overrides
Definition: ffmpeg.h:201
OutputStream::packets_written
atomic_uint_least64_t packets_written
Definition: ffmpeg.h:610
OptionsContext::nb_metadata
int nb_metadata
Definition: ffmpeg.h:176
find_codec_or_die
const AVCodec * find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
Definition: ffmpeg_opt.c:626
OptionsContext::nb_hwaccel_devices
int nb_hwaccel_devices
Definition: ffmpeg.h:139
InputFile::readrate
float readrate
Definition: ffmpeg.h:462
OutputStream::keep_pix_fmt
int keep_pix_fmt
Definition: ffmpeg.h:602
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int parse_and_set_vsync(const char *arg, int *vsync_var, int file_idx, int st_idx, int is_global)
Definition: ffmpeg_opt.c:184
OptionsContext::nb_attachments
int nb_attachments
Definition: ffmpeg.h:153
OutputFile::start_time
int64_t start_time
start time in microseconds == AV_TIME_BASE units
Definition: ffmpeg.h:642
OptionsContext::frame_aspect_ratios
SpecifierOpt * frame_aspect_ratios
Definition: ffmpeg.h:193
progress_avio
AVIOContext * progress_avio
Definition: ffmpeg.c:133
InputFile::index
int index
Definition: ffmpeg.h:435
InputFilter::ch_layout
AVChannelLayout ch_layout
Definition: ffmpeg.h:273
ffmpeg_parse_options
int ffmpeg_parse_options(int argc, char **argv)
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
InputFile::rate_emu
int rate_emu
Definition: ffmpeg.h:461
of_filesize
int64_t of_filesize(OutputFile *of)
Definition: ffmpeg_mux.c:733
OutputStream::unavailable
int unavailable
Definition: ffmpeg.h:588
OptionsContext::mux_max_delay
float mux_max_delay
Definition: ffmpeg.h:161
OptionsContext::nb_chroma_intra_matrices
int nb_chroma_intra_matrices
Definition: ffmpeg.h:208
OptionsContext::nb_pass
int nb_pass
Definition: ffmpeg.h:230
OutputStream::rotate_overridden
int rotate_overridden
Definition: ffmpeg.h:556
FKF_T
@ FKF_T
Definition: ffmpeg.h:476
sync_queue.h
LastFrameDuration::stream_idx
int stream_idx
Definition: ffmpeg.h:430
OptionsContext::subtitle_disable
int subtitle_disable
Definition: ffmpeg.h:168
OptionsContext::nb_apad
int nb_apad
Definition: ffmpeg.h:240
OptionsContext::qscale
SpecifierOpt * qscale
Definition: ffmpeg.h:185
OutputStream::index
int index
Definition: ffmpeg.h:513
b
#define b
Definition: input.c:41
FilterGraph::index
int index
Definition: ffmpeg.h:306
OptionsContext::inter_matrices
SpecifierOpt * inter_matrices
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AudioChannelMap::stream_idx
int stream_idx
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KeyframeForceCtx::type
int type
Definition: ffmpeg.h:496
InputStream::nb_filters
int nb_filters
Definition: ffmpeg.h:401
int_cb
const AVIOInterruptCB int_cb
Definition: ffmpeg.c:492
OutputStream::sws_dict
AVDictionary * sws_dict
Definition: ffmpeg.h:584
nb_output_files
int nb_output_files
Definition: ffmpeg.c:139
show_usage
void show_usage(void)
Definition: ffmpeg_opt.c:1205
FilterGraph::nb_inputs
int nb_inputs
Definition: ffmpeg.h:316
OptionsContext::bitexact
int bitexact
Definition: ffmpeg.h:164
OptionsContext::audio_channels
SpecifierOpt * audio_channels
Definition: ffmpeg.h:109
OptionsContext::nb_frame_rates
int nb_frame_rates
Definition: ffmpeg.h:114
AVDictionary
Definition: dict.c:32
HWDevice
Definition: ffmpeg.h:75
hw_device_init_from_string
int hw_device_init_from_string(const char *arg, HWDevice **dev)
Definition: ffmpeg_hw.c:94
nb_input_files
int nb_input_files
Definition: ffmpeg.c:136
LastFrameDuration
Definition: ffmpeg.h:429
InputStream::decoding_needed
int decoding_needed
Definition: ffmpeg.h:326
OptionsContext::format
const char * format
Definition: ffmpeg.h:103
InputFile::input_sync_ref
int input_sync_ref
Definition: ffmpeg.h:441
OutputStream::rotate_override_value
double rotate_override_value
Definition: ffmpeg.h:562
ost
static AVStream * ost
Definition: vaapi_transcode.c:45
OutputStream::last_dropped
int64_t last_dropped
Definition: ffmpeg.h:545
OptionsContext::nb_disposition
int nb_disposition
Definition: ffmpeg.h:244
qp_hist
int qp_hist
Definition: ffmpeg_opt.c:83
OutputStream::ist
InputStream * ist
Definition: ffmpeg.h:518
AVIOInterruptCB
Callback for checking whether to abort blocking functions.
Definition: avio.h:59
OptionDef
Definition: cmdutils.h:146
InputFilter::ist
struct InputStream * ist
Definition: ffmpeg.h:259
init_simple_filtergraph
int init_simple_filtergraph(InputStream *ist, OutputStream *ost)
Definition: ffmpeg_filter.c:179
OptionsContext::display_rotations
SpecifierOpt * display_rotations
Definition: ffmpeg.h:195
OptionsContext::nb_guess_layout_max
int nb_guess_layout_max
Definition: ffmpeg.h:238
OutputFile::nb_streams
int nb_streams
Definition: ffmpeg.h:637
InputFile::eof_reached
int eof_reached
Definition: ffmpeg.h:438
OutputStream::sq_frame
AVFrame * sq_frame
Definition: ffmpeg.h:543
InputStream
Definition: ffmpeg.h:321
filter_nbthreads
char * filter_nbthreads
Definition: ffmpeg_opt.c:86
OptionsContext::chapters_input_file
int chapters_input_file
Definition: ffmpeg.h:155
debug_ts
int debug_ts
Definition: ffmpeg_opt.c:79
OptionsContext::nb_presets
int nb_presets
Definition: ffmpeg.h:214
stats_period
int64_t stats_period
Definition: ffmpeg_opt.c:90
OptionsContext::rate_emu
int rate_emu
Definition: ffmpeg.h:125
OutputStream::vsync_method
enum VideoSyncMethod vsync_method
Definition: ffmpeg.h:551
dts_delta_threshold
float dts_delta_threshold
Definition: ffmpeg_opt.c:67
fifo.h
InputFile::audio_duration_queue_size
int audio_duration_queue_size
Definition: ffmpeg.h:468
OutputStream::filters
char * filters
filtergraph associated to the -filter option
Definition: ffmpeg.h:580
bsf.h
vstats_version
int vstats_version
Definition: ffmpeg_opt.c:88
assert_file_overwrite
void assert_file_overwrite(const char *filename)
Definition: ffmpeg_opt.c:655
OutputStream::initialized
int initialized
Definition: ffmpeg.h:593
opt_name_codec_names
const char *const opt_name_codec_names[]
Definition: ffmpeg_opt.c:56
OptionsContext::nb_dump_attachment
int nb_dump_attachment
Definition: ffmpeg.h:135
OptionsContext::g
OptionGroup * g
Definition: ffmpeg.h:97
InputStream::sub2video
struct InputStream::sub2video sub2video
OptionsContext::nb_display_vflips
int nb_display_vflips
Definition: ffmpeg.h:200
OutputStream::vsync_frame_number
int64_t vsync_frame_number
Definition: ffmpeg.h:522
InputFilter::type
enum AVMediaType type
Definition: ffmpeg.h:262
StreamMap::disabled
int disabled
Definition: ffmpeg.h:83
AudioChannelMap::ostream_idx
int ostream_idx
Definition: ffmpeg.h:92
OutputStream::logfile_prefix
char * logfile_prefix
Definition: ffmpeg.h:575
OptionsContext::nb_top_field_first
int nb_top_field_first
Definition: ffmpeg.h:210
OutputStream::next_pts
int64_t next_pts
Definition: muxing.c:59
InputStream::decoder_opts
AVDictionary * decoder_opts
Definition: ffmpeg.h:375
OptionsContext::nb_autorotate
int nb_autorotate
Definition: ffmpeg.h:143
InputStream::filter_in_rescale_delta_last
int64_t filter_in_rescale_delta_last
Definition: ffmpeg.h:362
KeyframeForceCtx::ref_pts
int64_t ref_pts
Definition: ffmpeg.h:498
OptionsContext::nb_reinit_filters
int nb_reinit_filters
Definition: ffmpeg.h:224
InputStream::nb_packets
uint64_t nb_packets
Definition: ffmpeg.h:418
OutputFilter::sample_rate
int sample_rate
Definition: ffmpeg.h:295
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
hw_device_setup_for_decode
int hw_device_setup_for_decode(InputStream *ist)
Definition: ffmpeg_hw.c:317
OptionsContext
Definition: ffmpeg.h:96
assert_avoptions
void assert_avoptions(AVDictionary *m)
Definition: ffmpeg.c:619
OptionsContext::time_bases
SpecifierOpt * time_bases
Definition: ffmpeg.h:247
InputStream::sub2video::last_pts
int64_t last_pts
Definition: ffmpeg.h:390
do_pkt_dump
int do_pkt_dump
Definition: ffmpeg_opt.c:75
OptionsContext::nb_audio_channel_maps
int nb_audio_channel_maps
Definition: ffmpeg.h:150
InputFile
Definition: ffmpeg.h:434
OptionsContext::recording_time
int64_t recording_time
Definition: ffmpeg.h:157
input_files
InputFile ** input_files
Definition: ffmpeg.c:135
InputStream::last_pkt_repeat_pict
int last_pkt_repeat_pict
Definition: ffmpeg.h:360
OptionsContext::pass
SpecifierOpt * pass
Definition: ffmpeg.h:229
OutputStream::copy_initial_nonkeyframes
int copy_initial_nonkeyframes
Definition: ffmpeg.h:599
OutputFilter::sample_rates
const int * sample_rates
Definition: ffmpeg.h:302
InputFile::ts_offset_discont
int64_t ts_offset_discont
Extra timestamp offset added by discontinuity handling.
Definition: ffmpeg.h:450
OptionsContext::nb_stream_maps
int nb_stream_maps
Definition: ffmpeg.h:147
OptionsContext::audio_disable
int audio_disable
Definition: ffmpeg.h:167
InputStream::first_dts
int64_t first_dts
dts of the first packet read for this stream (in AV_TIME_BASE units)
Definition: ffmpeg.h:349
InputStream::hwaccel_pix_fmt
enum AVPixelFormat hwaccel_pix_fmt
Definition: ffmpeg.h:412
OutputFile::shortest
int shortest
Definition: ffmpeg.h:644
InputStream::dts
int64_t dts
dts of the last packet read for this stream (in AV_TIME_BASE units)
Definition: ffmpeg.h:350
pkt
AVPacket * pkt
Definition: movenc.c:59
AudioChannelMap
Definition: ffmpeg.h:90
OptionsContext::presets
SpecifierOpt * presets
Definition: ffmpeg.h:213
OptionsContext::copy_initial_nonkeyframes
SpecifierOpt * copy_initial_nonkeyframes
Definition: ffmpeg.h:215
OptionsContext::codec_names
SpecifierOpt * codec_names
Definition: ffmpeg.h:105
term_init
void term_init(void)
Definition: ffmpeg.c:387
OptionsContext::nb_program
int nb_program
Definition: ffmpeg.h:246
StreamMap::linklabel
char * linklabel
Definition: ffmpeg.h:86
OutputFilter::width
int width
Definition: ffmpeg.h:292
HWACCEL_GENERIC
@ HWACCEL_GENERIC
Definition: ffmpeg.h:72
VSYNC_VSCFR
@ VSYNC_VSCFR
Definition: ffmpeg.h:63
InputStream::cfr_next_pts
int64_t cfr_next_pts
Definition: ffmpeg.h:369
s
#define s(width, name)
Definition: cbs_vp9.c:256
FilterGraph::outputs
OutputFilter ** outputs
Definition: ffmpeg.h:317
vstats_filename
char * vstats_filename
Definition: ffmpeg_opt.c:63
OutputStream::frame_aspect_ratio
AVRational frame_aspect_ratio
Definition: ffmpeg.h:565
InputStream::framerate
AVRational framerate
Definition: ffmpeg.h:376
do_psnr
int do_psnr
Definition: ffmpeg_opt.c:96
OutputStream::mux_timebase
AVRational mux_timebase
Definition: ffmpeg.h:537
OptionsContext::nb_bits_per_raw_sample
int nb_bits_per_raw_sample
Definition: ffmpeg.h:254
ENCODER_FINISHED
@ ENCODER_FINISHED
Definition: ffmpeg.h:486
OptionsContext::limit_filesize
int64_t limit_filesize
Definition: ffmpeg.h:159
OutputStream::audio_channels_mapped
int audio_channels_mapped
Definition: ffmpeg.h:572
InputFilter
Definition: ffmpeg.h:257
OutputStream::copy_prior_start
int copy_prior_start
Definition: ffmpeg.h:600
OptionsContext::audio_ch_layouts
SpecifierOpt * audio_ch_layouts
Definition: ffmpeg.h:107
AVHWDeviceType
AVHWDeviceType
Definition: hwcontext.h:27
OutputFilter::ost
struct OutputStream * ost
Definition: ffmpeg.h:283
forced_keyframes_const
forced_keyframes_const
Definition: ffmpeg.h:471
ignore_unknown_streams
int ignore_unknown_streams
Definition: ffmpeg_opt.c:98
MUXER_FINISHED
@ MUXER_FINISHED
Definition: ffmpeg.h:487
OutputStream::avfilter
char * avfilter
Definition: ffmpeg.h:579
audio_drift_threshold
float audio_drift_threshold
Definition: ffmpeg_opt.c:66
InputStream::filters
InputFilter ** filters
Definition: ffmpeg.h:400
OptionsContext::nb_copy_initial_nonkeyframes
int nb_copy_initial_nonkeyframes
Definition: ffmpeg.h:216
max_error_rate
float max_error_rate
Definition: ffmpeg_opt.c:85
AVExpr
Definition: eval.c:157
OptionsContext::sample_fmts
SpecifierOpt * sample_fmts
Definition: ffmpeg.h:183
OptionsContext::shortest
int shortest
Definition: ffmpeg.h:163
InputStream::hwaccel_retrieve_data
int(* hwaccel_retrieve_data)(AVCodecContext *s, AVFrame *frame)
Definition: ffmpeg.h:411
InputFilter::graph
struct FilterGraph * graph
Definition: ffmpeg.h:260
AVThreadMessageQueue
Definition: threadmessage.c:27
OptionsContext::accurate_seek
int accurate_seek
Definition: ffmpeg.h:127
OutputStream::last_frame
AVFrame * last_frame
Definition: ffmpeg.h:542
OptionsContext::nb_canvas_sizes
int nb_canvas_sizes
Definition: ffmpeg.h:228
OptionsContext::nb_max_muxing_queue_size
int nb_max_muxing_queue_size
Definition: ffmpeg.h:234
OutputStream::bitexact
int bitexact
Definition: ffmpeg.h:559
arg
const char * arg
Definition: jacosubdec.c:67
KeyframeForceCtx::expr_const_values
double expr_const_values[FKF_NB]
Definition: ffmpeg.h:506
OutputStream::streamcopy_started
int streamcopy_started
Definition: ffmpeg.h:598
OutputStream::encoder_opts
AVDictionary * encoder_opts
Definition: ffmpeg.h:583
OptionsContext::start_time
int64_t start_time
Definition: ffmpeg.h:100
InputStream::pts
int64_t pts
current pts of the decoded frame (in AV_TIME_BASE units)
Definition: ffmpeg.h:353
AVFormatContext
Format I/O context.
Definition: avformat.h:1216
OutputFilter::height
int height
Definition: ffmpeg.h:292
OptionsContext::nb_filter_scripts
int nb_filter_scripts
Definition: ffmpeg.h:222
OptionsContext::reinit_filters
SpecifierOpt * reinit_filters
Definition: ffmpeg.h:223
OutputFilter::name
uint8_t * name
Definition: ffmpeg.h:285
InputStream::sub2video::w
int w
Definition: ffmpeg.h:394
InputStream::top_field_first
int top_field_first
Definition: ffmpeg.h:377
InputStream::st
AVStream * st
Definition: ffmpeg.h:323
forced_keyframes_const_names
const char *const forced_keyframes_const_names[]
Definition: ffmpeg_mux_init.c:1744
OptionsContext::filters
SpecifierOpt * filters
Definition: ffmpeg.h:219
OptionsContext::frame_sizes
SpecifierOpt * frame_sizes
Definition: ffmpeg.h:117
InputFile::start_time_effective
int64_t start_time_effective
Effective format start time based on enabled streams.
Definition: ffmpeg.h:445
of_close
void of_close(OutputFile **pof)
Definition: ffmpeg_mux.c:706
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
OptionsContext::fix_sub_duration
SpecifierOpt * fix_sub_duration
Definition: ffmpeg.h:225
OptionsContext::codec_tags
SpecifierOpt * codec_tags
Definition: ffmpeg.h:181
InputStream::next_pts
int64_t next_pts
synthetic pts for the next decode frame (in AV_TIME_BASE units)
Definition: ffmpeg.h:352
OptionsContext::force_fps
SpecifierOpt * force_fps
Definition: ffmpeg.h:191
OptionsContext::nb_intra_matrices
int nb_intra_matrices
Definition: ffmpeg.h:204
OutputStream::audio_channels_map
int * audio_channels_map
Definition: ffmpeg.h:571
InputStream::hwaccel_id
enum HWAccelID hwaccel_id
Definition: ffmpeg.h:406
OutputStream::frame_rate
AVRational frame_rate
Definition: ffmpeg.h:549
copy_unknown_streams
int copy_unknown_streams
Definition: ffmpeg_opt.c:99
ifile_get_packet
int ifile_get_packet(InputFile *f, AVPacket **pkt)
Get next input packet from the demuxer.
Definition: ffmpeg_demux.c:410
InputFilter::eof
int eof
Definition: ffmpeg.h:278
InputStream::fix_sub_duration
int fix_sub_duration
Definition: ffmpeg.h:382
OutputStream::top_field_first
int top_field_first
Definition: ffmpeg.h:554
InputStream::hwaccel_output_format
enum AVPixelFormat hwaccel_output_format
Definition: ffmpeg.h:409
opt_name_top_field_first
const char *const opt_name_top_field_first[]
Definition: ffmpeg_opt.c:59
OptionsContext::max_frames
SpecifierOpt * max_frames
Definition: ffmpeg.h:177
AVFilterGraph
Definition: avfilter.h:878
do_benchmark_all
int do_benchmark_all
Definition: ffmpeg_opt.c:73
filtergraphs
FilterGraph ** filtergraphs
Definition: ffmpeg.c:141
OptionsContext::nb_display_hflips
int nb_display_hflips
Definition: ffmpeg.h:198
OptionsContext::input_sync_ref
int input_sync_ref
Definition: ffmpeg.h:129
InputStream::min_pts
int64_t min_pts
Definition: ffmpeg.h:364
OutputFile::index
int index
Definition: ffmpeg.h:631
OptionGroup
Definition: cmdutils.h:250
OptionsContext::program
SpecifierOpt * program
Definition: ffmpeg.h:245
InputStream::sub2video::sub_queue
AVFifo * sub_queue
queue of AVSubtitle* before filter init
Definition: ffmpeg.h:392
FilterGraph::nb_outputs
int nb_outputs
Definition: ffmpeg.h:318
OutputStream::logfile
FILE * logfile
Definition: ffmpeg.h:576
swresample.h
InputStream::sub2video::initialize
unsigned int initialize
marks if sub2video_update should force an initialization
Definition: ffmpeg.h:395
OptionsContext::nb_metadata_map
int nb_metadata_map
Definition: ffmpeg.h:212
InputStream::par
AVCodecParameters * par
Codec parameters - to be used by the decoding/streamcopy code.
Definition: ffmpeg.h:336
OptionsContext::nb_filters
int nb_filters
Definition: ffmpeg.h:220
OutputFile::streams
OutputStream ** streams
Definition: ffmpeg.h:636
InputStream::frames_decoded
uint64_t frames_decoded
Definition: ffmpeg.h:420
recast_media
int recast_media
Definition: ffmpeg_opt.c:100
OptionsContext::nb_fps_mode
int nb_fps_mode
Definition: ffmpeg.h:190
InputStream::next_dts
int64_t next_dts
Definition: ffmpeg.h:348
FilterGraph
Definition: ffmpeg.h:305
OptionsContext::display_hflips
SpecifierOpt * display_hflips
Definition: ffmpeg.h:197
print_stats
int print_stats
Definition: ffmpeg_opt.c:82
InputFilter::filter
AVFilterContext * filter
Definition: ffmpeg.h:258
nb_output_dumped
unsigned nb_output_dumped
Definition: ffmpeg.c:130
options
const OptionDef options[]
VideoSyncMethod
VideoSyncMethod
Definition: ffmpeg.h:58
eval.h
OutputStream::force_fps
int force_fps
Definition: ffmpeg.h:553
OptionsContext::nb_frame_aspect_ratios
int nb_frame_aspect_ratios
Definition: ffmpeg.h:194
OutputStream::filter
OutputFilter * filter
Definition: ffmpeg.h:578
f
f
Definition: af_crystalizer.c:122
AVIOContext
Bytestream IO Context.
Definition: avio.h:166
sub2video_update
void sub2video_update(InputStream *ist, int64_t heartbeat_pts, AVSubtitle *sub)
Definition: ffmpeg.c:220
InputStream::hwaccel_device_type
enum AVHWDeviceType hwaccel_device_type
Definition: ffmpeg.h:407
OptionsContext::thread_queue_size
int thread_queue_size
Definition: ffmpeg.h:128
AVMediaType
AVMediaType
Definition: avutil.h:199
InputStream::decoded_frame
AVFrame * decoded_frame
Definition: ffmpeg.h:339
AVFifo
Definition: fifo.c:35
InputStream::wrap_correction_done
int wrap_correction_done
Definition: ffmpeg.h:354
InputStream::start
int64_t start
Definition: ffmpeg.h:345
AVChannelLayout
An AVChannelLayout holds information about the channel layout of audio data.
Definition: channel_layout.h:301
threadmessage.h
OutputStream::error
int64_t error[4]
Definition: ffmpeg.h:624
InputStream::file_index
int file_index
Definition: ffmpeg.h:322
OutputStream::data_size_enc
uint64_t data_size_enc
Definition: ffmpeg.h:608
InputFile::last_ts
int64_t last_ts
Definition: ffmpeg.h:451
FilterGraph::graph
AVFilterGraph * graph
Definition: ffmpeg.h:309
InputStream::pkt
AVPacket * pkt
Definition: ffmpeg.h:340
InputStream::got_output
int got_output
Definition: ffmpeg.h:384
StreamMap
Definition: ffmpeg.h:82
copy_ts
int copy_ts
Definition: ffmpeg_opt.c:76
OptionsContext::filter_scripts
SpecifierOpt * filter_scripts
Definition: ffmpeg.h:221
OutputStream::packets_encoded
uint64_t packets_encoded
Definition: ffmpeg.h:615
avio.h
copy_tb
int copy_tb
Definition: ffmpeg_opt.c:78
OptionsContext::seek_timestamp
int seek_timestamp
Definition: ffmpeg.h:102
hwaccel_decode_init
int hwaccel_decode_init(AVCodecContext *avctx)
Definition: ffmpeg_hw.c:542
OptionsContext::top_field_first
SpecifierOpt * top_field_first
Definition: ffmpeg.h:209
HWDevice::device_ref
AVBufferRef * device_ref
Definition: ffmpeg.h:78
OutputFile::url
const char * url
Definition: ffmpeg.h:634
OptionsContext::nb_discard
int nb_discard
Definition: ffmpeg.h:242
OSTFinished
OSTFinished
Definition: ffmpeg.h:485
OutputFilter::filter
AVFilterContext * filter
Definition: ffmpeg.h:282
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
InputStream::samples_decoded
uint64_t samples_decoded
Definition: ffmpeg.h:421
OptionsContext::find_stream_info
int find_stream_info
Definition: ffmpeg.h:130
strip_specifiers
AVDictionary * strip_specifiers(const AVDictionary *dict)
Definition: ffmpeg_opt.c:167
check_filter_outputs
void check_filter_outputs(void)
Definition: ffmpeg_filter.c:648
OptionsContext::metadata
SpecifierOpt * metadata
Definition: ffmpeg.h:175
OutputStream::kf
KeyframeForceCtx kf
Definition: ffmpeg.h:567
InputStream::max_pts
int64_t max_pts
Definition: ffmpeg.h:365
do_benchmark
int do_benchmark
Definition: ffmpeg_opt.c:72
OptionsContext::nb_autoscale
int nb_autoscale
Definition: ffmpeg.h:252
OutputFile::sq_encode
SyncQueue * sq_encode
Definition: ffmpeg.h:639
KF_FORCE_SOURCE
@ KF_FORCE_SOURCE
Definition: ffmpeg.h:491
OutputStream::pict_type
int pict_type
Definition: ffmpeg.h:621
OptionsContext::frame_rates
SpecifierOpt * frame_rates
Definition: ffmpeg.h:113
KeyframeForceCtx
Definition: ffmpeg.h:495
OutputFilter::type
enum AVMediaType type
Definition: ffmpeg.h:289
HWACCEL_AUTO
@ HWACCEL_AUTO
Definition: ffmpeg.h:71
OptionsContext::autorotate
SpecifierOpt * autorotate
Definition: ffmpeg.h:142
OutputStream::max_frame_rate
AVRational max_frame_rate
Definition: ffmpeg.h:550
InputStream::guess_layout_max
int guess_layout_max
Definition: ffmpeg.h:378
OutputStream::filters_script
char * filters_script
filtergraph script associated to the -filter_script option
Definition: ffmpeg.h:581
OutputStream::pkt
AVPacket * pkt
Definition: ffmpeg.h:544
OutputStream::apad
char * apad
Definition: ffmpeg.h:586
OptionsContext::nb_hwaccel_output_formats
int nb_hwaccel_output_formats
Definition: ffmpeg.h:141
init_complex_filtergraph
int init_complex_filtergraph(FilterGraph *fg)
Definition: ffmpeg_filter.c:317
OptionsContext::forced_key_frames
SpecifierOpt * forced_key_frames
Definition: ffmpeg.h:187
of_output_packet
void of_output_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int eof)
Definition: ffmpeg_mux.c:322
AVOutputFormat
Definition: avformat.h:509
OutputStream::data_size_mux
uint64_t data_size_mux
Definition: ffmpeg.h:606
OptionsContext::metadata_map
SpecifierOpt * metadata_map
Definition: ffmpeg.h:211
InputStream::ret
int ret
Definition: ffmpeg.h:385
StreamMap::stream_index
int stream_index
Definition: ffmpeg.h:85
OptionsContext::nb_qscale
int nb_qscale
Definition: ffmpeg.h:186
OptionsContext::stream_maps
StreamMap * stream_maps
Definition: ffmpeg.h:146
OptionsContext::nb_ts_scale
int nb_ts_scale
Definition: ffmpeg.h:133
OptionsContext::audio_sample_rate
SpecifierOpt * audio_sample_rate
Definition: ffmpeg.h:111
OptionsContext::start_time_eof
int64_t start_time_eof
Definition: ffmpeg.h:101
VSYNC_CFR
@ VSYNC_CFR
Definition: ffmpeg.h:61
OptionsContext::shortest_buf_duration
float shortest_buf_duration
Definition: ffmpeg.h:162
OutputFile::bitexact
int bitexact
Definition: ffmpeg.h:645
OptionsContext::nb_fix_sub_duration
int nb_fix_sub_duration
Definition: ffmpeg.h:226
exit_on_error
int exit_on_error
Definition: ffmpeg_opt.c:80
output_files
OutputFile ** output_files
Definition: ffmpeg.c:138
OutputStream::last_nb0_frames
int64_t last_nb0_frames[3]
Definition: ffmpeg.h:546
OptionsContext::nb_frame_pix_fmts
int nb_frame_pix_fmts
Definition: ffmpeg.h:120
InputStream::processing_needed
int processing_needed
Definition: ffmpeg.h:329
hw_device_setup_for_filter
int hw_device_setup_for_filter(FilterGraph *fg)
Definition: ffmpeg_hw.c:551
InputFile::ctx
AVFormatContext * ctx
Definition: ffmpeg.h:437
InputFile::accurate_seek
int accurate_seek
Definition: ffmpeg.h:463
OptionsContext::nb_copy_prior_start
int nb_copy_prior_start
Definition: ffmpeg.h:218
OptionsContext::bits_per_raw_sample
SpecifierOpt * bits_per_raw_sample
Definition: ffmpeg.h:253
OptionsContext::bitstream_filters
SpecifierOpt * bitstream_filters
Definition: ffmpeg.h:179
OptionsContext::streamid_map
int * streamid_map
Definition: ffmpeg.h:172
InputFile::recording_time
int64_t recording_time
Definition: ffmpeg.h:453
avcodec.h
OptionsContext::passlogfiles
SpecifierOpt * passlogfiles
Definition: ffmpeg.h:231
SpecifierOpt
Definition: cmdutils.h:134
OptionsContext::autoscale
SpecifierOpt * autoscale
Definition: ffmpeg.h:251
AVStream
Stream structure.
Definition: avformat.h:948
OptionsContext::nb_bitstream_filters
int nb_bitstream_filters
Definition: ffmpeg.h:180
pixfmt.h
abort_on_flags
int abort_on_flags
Definition: ffmpeg_opt.c:81
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
InputFilter::name
uint8_t * name
Definition: ffmpeg.h:261
OptionsContext::nb_streamid_map
int nb_streamid_map
Definition: ffmpeg.h:173
VSYNC_DROP
@ VSYNC_DROP
Definition: ffmpeg.h:64
sdp_filename
char * sdp_filename
Definition: ffmpeg_opt.c:64
OutputFilter::ch_layout
AVChannelLayout ch_layout
Definition: ffmpeg.h:296
OptionsContext::audio_channel_maps
AudioChannelMap * audio_channel_maps
Definition: ffmpeg.h:149
InputFile::streams
InputStream ** streams
Definition: ffmpeg.h:458
InputStream::reinit_filters
int reinit_filters
Definition: ffmpeg.h:403
hw_device_free_all
void hw_device_free_all(void)
Definition: ffmpeg_hw.c:288
avformat.h
InputFile::eagain
int eagain
Definition: ffmpeg.h:439
HWAccelID
HWAccelID
Definition: ffmpeg.h:69
dict.h
OptionsContext::nb_sample_fmts
int nb_sample_fmts
Definition: ffmpeg.h:184
InputFilter::sample_rate
int sample_rate
Definition: ffmpeg.h:272
OptionsContext::nb_enc_time_bases
int nb_enc_time_bases
Definition: ffmpeg.h:250
SyncQueue
Definition: sync_queue.c:45
ifile_close
void ifile_close(InputFile **f)
Definition: ffmpeg_demux.c:479
OptionsContext::nb_max_frames
int nb_max_frames
Definition: ffmpeg.h:178
OptionsContext::disposition
SpecifierOpt * disposition
Definition: ffmpeg.h:243
ifilter_parameters_from_frame
int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame)
Definition: ffmpeg_filter.c:1125
OutputFilter::format
int format
Definition: ffmpeg.h:294
ifile_open
int ifile_open(const OptionsContext *o, const char *filename)
Definition: ffmpeg_demux.c:842
filter_hw_device
HWDevice * filter_hw_device
Definition: ffmpeg_opt.c:61
AVCodecContext
main external API structure.
Definition: avcodec.h:398
hw_device_setup_for_encode
int hw_device_setup_for_encode(OutputStream *ost)
Definition: ffmpeg_hw.c:445
OptionsContext::mux_preload
float mux_preload
Definition: ffmpeg.h:160
HWDevice::name
const char * name
Definition: ffmpeg.h:76
InputFilter::format
int format
Definition: ffmpeg.h:267
OutputStream::finished
OSTFinished finished
Definition: ffmpeg.h:587
OptionsContext::nb_audio_channels
int nb_audio_channels
Definition: ffmpeg.h:110
InputStream::prev_pkt_pts
int64_t prev_pkt_pts
Definition: ffmpeg.h:344
InputFile::audio_duration_queue
AVThreadMessageQueue * audio_duration_queue
Definition: ffmpeg.h:467
OptionsContext::guess_layout_max
SpecifierOpt * guess_layout_max
Definition: ffmpeg.h:237
KeyframeForceCtx::index
int index
Definition: ffmpeg.h:503
OptionsContext::enc_time_bases
SpecifierOpt * enc_time_bases
Definition: ffmpeg.h:249
avfilter.h
OutputFilter::formats
const int * formats
Definition: ffmpeg.h:300
FilterGraph::is_meta
int is_meta
Definition: ffmpeg.h:313
OutputStream::last_mux_dts
int64_t last_mux_dts
Definition: ffmpeg.h:527
OptionsContext::video_disable
int video_disable
Definition: ffmpeg.h:166
InputStream::prev_sub
struct InputStream::@3 prev_sub
OutputStream::quality
int quality
Definition: ffmpeg.h:618
OptionsContext::nb_forced_key_frames
int nb_forced_key_frames
Definition: ffmpeg.h:188
OutputStream::bits_per_raw_sample
int bits_per_raw_sample
Definition: ffmpeg.h:560
OptionsContext::max_frame_rates
SpecifierOpt * max_frame_rates
Definition: ffmpeg.h:115
InputStream::nb_samples
int64_t nb_samples
Definition: ffmpeg.h:371
InputFilter::height
int height
Definition: ffmpeg.h:269
OptionsContext::frame_pix_fmts
SpecifierOpt * frame_pix_fmts
Definition: ffmpeg.h:119
video_sync_method
enum VideoSyncMethod video_sync_method
Definition: ffmpeg_opt.c:70
OutputStream::frames_encoded
uint64_t frames_encoded
Definition: ffmpeg.h:612
HWACCEL_NONE
@ HWACCEL_NONE
Definition: ffmpeg.h:70
InputFile::ts_offset
int64_t ts_offset
Definition: ffmpeg.h:446
OptionsContext::nb_frame_sizes
int nb_frame_sizes
Definition: ffmpeg.h:118
OptionsContext::hwaccel_devices
SpecifierOpt * hwaccel_devices
Definition: ffmpeg.h:138
InputStream::discard
int discard
Definition: ffmpeg.h:324
OptionsContext::max_muxing_queue_size
SpecifierOpt * max_muxing_queue_size
Definition: ffmpeg.h:233
AVFilterContext
An instance of a filter.
Definition: avfilter.h:415
remove_avoptions
void remove_avoptions(AVDictionary **a, AVDictionary *b)
Definition: ffmpeg.c:610
VSYNC_AUTO
@ VSYNC_AUTO
Definition: ffmpeg.h:59
OutputFilter
Definition: ffmpeg.h:281
InputStream::sub2video::frame
AVFrame * frame
Definition: ffmpeg.h:393
OptionsContext::nb_muxing_queue_data_threshold
int nb_muxing_queue_data_threshold
Definition: ffmpeg.h:236
OptionsContext::nb_inter_matrices
int nb_inter_matrices
Definition: ffmpeg.h:206
OutputStream::last_filter_pts
int64_t last_filter_pts
Definition: ffmpeg.h:529
OptionsContext::muxing_queue_data_threshold
SpecifierOpt * muxing_queue_data_threshold
Definition: ffmpeg.h:235
avutil.h
start_at_zero
int start_at_zero
Definition: ffmpeg_opt.c:77
AVBufferRef
A reference to a data buffer.
Definition: buffer.h:82
OutputStream::file_index
int file_index
Definition: ffmpeg.h:512
OptionsContext::copy_prior_start
SpecifierOpt * copy_prior_start
Definition: ffmpeg.h:217
InputStream::sub2video
Definition: ffmpeg.h:389
ist_iter
InputStream * ist_iter(InputStream *prev)
Definition: ffmpeg.c:594
OptionsContext::fps_mode
SpecifierOpt * fps_mode
Definition: ffmpeg.h:189
OutputFilter::out_tmp
AVFilterInOut * out_tmp
Definition: ffmpeg.h:288
auto_conversion_filters
int auto_conversion_filters
Definition: ffmpeg_opt.c:89
InputStream::sub2video::h
int h
Definition: ffmpeg.h:394
OptionsContext::nb_passlogfiles
int nb_passlogfiles
Definition: ffmpeg.h:232
KeyframeForceCtx::pexpr
AVExpr * pexpr
Definition: ffmpeg.h:505
opt_name_frame_rates
const char *const opt_name_frame_rates[]
Definition: ffmpeg_opt.c:57
OutputStream::is_cfr
int is_cfr
Definition: ffmpeg.h:552
OutputStream::autoscale
int autoscale
Definition: ffmpeg.h:558
InputFilter::hw_frames_ctx
AVBufferRef * hw_frames_ctx
Definition: ffmpeg.h:275
FKF_N_FORCED
@ FKF_N_FORCED
Definition: ffmpeg.h:473
OptionsContext::attachments
const char ** attachments
Definition: ffmpeg.h:152
InputStream::sub2video::end_pts
int64_t end_pts
Definition: ffmpeg.h:391
stdin_interaction
int stdin_interaction
Definition: ffmpeg_opt.c:84
do_hex_dump
int do_hex_dump
Definition: ffmpeg_opt.c:74
LastFrameDuration::duration
int64_t duration
Definition: ffmpeg.h:431
InputStream::ts_scale
double ts_scale
Definition: ffmpeg.h:373
OptionsContext::ts_scale
SpecifierOpt * ts_scale
Definition: ffmpeg.h:132
AVPacket
This structure stores compressed data.
Definition: packet.h:351
main_return_code
int main_return_code
Definition: ffmpeg.c:326
OptionsContext::chroma_intra_matrices
SpecifierOpt * chroma_intra_matrices
Definition: ffmpeg.h:207
FilterGraph::reconfiguration
int reconfiguration
Definition: ffmpeg.h:310
HWDevice::type
enum AVHWDeviceType type
Definition: ffmpeg.h:77
cmdutils.h
InputFile::input_ts_offset
int64_t input_ts_offset
Definition: ffmpeg.h:440
file_read
char * file_read(const char *filename)
Definition: ffmpeg_opt.c:699
OptionsContext::data_disable
int data_disable
Definition: ffmpeg.h:169
InputStream::dts_buffer
int64_t * dts_buffer
Definition: ffmpeg.h:423
InputFilter::frame_queue
AVFifo * frame_queue
Definition: ffmpeg.h:264
int32_t
int32_t
Definition: audioconvert.c:56
FKF_NB
@ FKF_NB
Definition: ffmpeg.h:477
OutputStream
Definition: muxing.c:54
OptionsContext::nb_display_rotations
int nb_display_rotations
Definition: ffmpeg.h:196
hwcontext.h
OutputStream::sq_idx_encode
int sq_idx_encode
Definition: ffmpeg.h:626
OutputStream::st
AVStream * st
Definition: muxing.c:55
dts_error_threshold
float dts_error_threshold
Definition: ffmpeg_opt.c:68
OptionsContext::hwaccel_output_formats
SpecifierOpt * hwaccel_output_formats
Definition: ffmpeg.h:140
OutputFile::format
const AVOutputFormat * format
Definition: ffmpeg.h:633
InputStream::nb_dts_buffer
int nb_dts_buffer
Definition: ffmpeg.h:424
InputStream::saw_first_ts
int saw_first_ts
Definition: ffmpeg.h:374
OutputStream::swr_opts
AVDictionary * swr_opts
Definition: ffmpeg.h:585
OutputFilter::frame_rate
AVRational frame_rate
Definition: ffmpeg.h:293
OutputStream::filtered_frame
AVFrame * filtered_frame
Definition: ffmpeg.h:541
InputFile::nb_streams
int nb_streams
Definition: ffmpeg.h:459
opt_name_codec_tags
const char *const opt_name_codec_tags[]
Definition: ffmpeg_opt.c:58
FKF_N
@ FKF_N
Definition: ffmpeg.h:472
OutputFile::recording_time
int64_t recording_time
desired length of the resulting file in microseconds == AV_TIME_BASE units
Definition: ffmpeg.h:641
int
int
Definition: ffmpeg_filter.c:156
OutputStream::samples_encoded
uint64_t samples_encoded
Definition: ffmpeg.h:613
OutputStream::inputs_done
int inputs_done
Definition: ffmpeg.h:595
of_stream_init
int of_stream_init(OutputFile *of, OutputStream *ost)
Definition: ffmpeg_mux.c:579
hw_device_get_by_name
HWDevice * hw_device_get_by_name(const char *name)
Definition: ffmpeg_hw.c:44
OptionsContext::nb_codec_tags
int nb_codec_tags
Definition: ffmpeg.h:182
AVFilterInOut
A linked-list of the inputs/outputs of the filter chain.
Definition: avfilter.h:1038
VSYNC_PASSTHROUGH
@ VSYNC_PASSTHROUGH
Definition: ffmpeg.h:60
InputStream::dec
const AVCodec * dec
Definition: ffmpeg.h:338
OptionsContext::discard
SpecifierOpt * discard
Definition: ffmpeg.h:241
InputStream::subtitle
AVSubtitle subtitle
Definition: ffmpeg.h:386
of_write_trailer
int of_write_trailer(OutputFile *of)
Definition: ffmpeg_mux.c:600
filtergraph_is_simple
int filtergraph_is_simple(FilterGraph *fg)
Definition: ffmpeg_filter.c:1157
OptionsContext::display_vflips
SpecifierOpt * display_vflips
Definition: ffmpeg.h:199
atomic_uint_least64_t
intptr_t atomic_uint_least64_t
Definition: stdatomic.h:69
term_exit
void term_exit(void)
Definition: ffmpeg.c:316
filter_complex_nbthreads
int filter_complex_nbthreads
Definition: ffmpeg_opt.c:87
OutputFile
Definition: ffmpeg.h:630
OptionsContext::loop
int loop
Definition: ffmpeg.h:124
InputStream::autorotate
int autorotate
Definition: ffmpeg.h:380
OutputStream::enc_timebase
AVRational enc_timebase
Definition: ffmpeg.h:538
OptionsContext::nb_force_fps
int nb_force_fps
Definition: ffmpeg.h:192