FFmpeg
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Main libavformat public API header. More...
#include <time.h>
#include <stdio.h>
#include "libavcodec/avcodec.h"
#include "libavutil/dict.h"
#include "libavutil/log.h"
#include "avio.h"
#include "libavformat/version.h"
Go to the source code of this file.
Data Structures | |
struct | AVFrac |
The exact value of the fractional number is: 'val + num / den'. More... | |
struct | AVProbeData |
This structure contains the data a format has to probe a file. More... | |
struct | AVOutputFormat |
struct | AVInputFormat |
struct | AVIndexEntry |
struct | AVStream |
Stream structure. More... | |
struct | AVProgram |
New fields can be added to the end with minor version bumps. More... | |
struct | AVChapter |
struct | AVFormatContext |
Format I/O context. More... | |
struct | AVPacketList |
Macros | |
#define | AVPROBE_SCORE_RETRY (AVPROBE_SCORE_MAX/4) |
#define | AVPROBE_SCORE_EXTENSION 50 |
score for file extension | |
#define | AVPROBE_SCORE_MAX 100 |
maximum score | |
#define | AVPROBE_PADDING_SIZE 32 |
extra allocated bytes at the end of the probe buffer | |
#define | AVFMT_NOFILE 0x0001 |
Demuxer will use avio_open, no opened file should be provided by the caller. | |
#define | AVFMT_NEEDNUMBER 0x0002 |
Needs 'd' in filename. | |
#define | AVFMT_SHOW_IDS 0x0008 |
Show format stream IDs numbers. | |
#define | AVFMT_RAWPICTURE 0x0020 |
Format wants AVPicture structure for raw picture data. | |
#define | AVFMT_GLOBALHEADER 0x0040 |
Format wants global header. | |
#define | AVFMT_NOTIMESTAMPS 0x0080 |
Format does not need / have any timestamps. | |
#define | AVFMT_GENERIC_INDEX 0x0100 |
Use generic index building code. | |
#define | AVFMT_TS_DISCONT 0x0200 |
Format allows timestamp discontinuities. | |
#define | AVFMT_VARIABLE_FPS 0x0400 |
Format allows variable fps. | |
#define | AVFMT_NODIMENSIONS 0x0800 |
Format does not need width/height. | |
#define | AVFMT_NOSTREAMS 0x1000 |
Format does not require any streams. | |
#define | AVFMT_NOBINSEARCH 0x2000 |
Format does not allow to fall back on binary search via read_timestamp. | |
#define | AVFMT_NOGENSEARCH 0x4000 |
Format does not allow to fall back on generic search. | |
#define | AVFMT_NO_BYTE_SEEK 0x8000 |
Format does not allow seeking by bytes. | |
#define | AVFMT_ALLOW_FLUSH 0x10000 |
Format allows flushing. | |
#define | AVFMT_TS_NONSTRICT 0x8020000 |
Format does not require strictly increasing timestamps, but they must still be monotonic. | |
#define | AVFMT_TS_NEGATIVE 0x40000 |
Format allows muxing negative timestamps. | |
#define | AVFMT_SEEK_TO_PTS 0x4000000 |
Seeking is based on PTS. | |
#define | AVINDEX_KEYFRAME 0x0001 |
#define | AV_DISPOSITION_DEFAULT 0x0001 |
#define | AV_DISPOSITION_DUB 0x0002 |
#define | AV_DISPOSITION_ORIGINAL 0x0004 |
#define | AV_DISPOSITION_COMMENT 0x0008 |
#define | AV_DISPOSITION_LYRICS 0x0010 |
#define | AV_DISPOSITION_KARAOKE 0x0020 |
#define | AV_DISPOSITION_FORCED 0x0040 |
Track should be used during playback by default. | |
#define | AV_DISPOSITION_HEARING_IMPAIRED 0x0080 |
stream for hearing impaired audiences | |
#define | AV_DISPOSITION_VISUAL_IMPAIRED 0x0100 |
stream for visual impaired audiences | |
#define | AV_DISPOSITION_CLEAN_EFFECTS 0x0200 |
stream without voice | |
#define | AV_DISPOSITION_ATTACHED_PIC 0x0400 |
The stream is stored in the file as an attached picture/"cover art" (e.g. | |
#define | AV_DISPOSITION_CAPTIONS 0x10000 |
To specify text track kind (different from subtitles default). | |
#define | AV_DISPOSITION_DESCRIPTIONS 0x20000 |
#define | AV_DISPOSITION_METADATA 0x40000 |
#define | AV_PTS_WRAP_IGNORE 0 |
Options for behavior on timestamp wrap detection. | |
#define | AV_PTS_WRAP_ADD_OFFSET 1 |
add the format specific offset on wrap detection | |
#define | AV_PTS_WRAP_SUB_OFFSET -1 |
subtract the format specific offset on wrap detection | |
#define | MAX_STD_TIMEBASES (60*12+6) |
Stream information used internally by av_find_stream_info() | |
#define | MAX_PROBE_PACKETS 2500 |
Number of packets to buffer for codec probing. | |
#define | MAX_REORDER_DELAY 16 |
#define | AV_PROGRAM_RUNNING 1 |
#define | AVFMTCTX_NOHEADER 0x0001 |
signal that no header is present (streams are added dynamically) | |
#define | AVFMT_FLAG_GENPTS 0x0001 |
Generate missing pts even if it requires parsing future frames. | |
#define | AVFMT_FLAG_IGNIDX 0x0002 |
Ignore index. | |
#define | AVFMT_FLAG_NONBLOCK 0x0004 |
Do not block when reading packets from input. | |
#define | AVFMT_FLAG_IGNDTS 0x0008 |
Ignore DTS on frames that contain both DTS & PTS. | |
#define | AVFMT_FLAG_NOFILLIN 0x0010 |
Do not infer any values from other values, just return what is stored in the container. | |
#define | AVFMT_FLAG_NOPARSE 0x0020 |
Do not use AVParsers, you also must set AVFMT_FLAG_NOFILLIN as the fillin code works on frames and no parsing -> no frames. Also seeking to frames can not work if parsing to find frame boundaries has been disabled. | |
#define | AVFMT_FLAG_NOBUFFER 0x0040 |
Do not buffer frames when possible. | |
#define | AVFMT_FLAG_CUSTOM_IO 0x0080 |
The caller has supplied a custom AVIOContext, don't avio_close() it. | |
#define | AVFMT_FLAG_DISCARD_CORRUPT 0x0100 |
Discard frames marked corrupted. | |
#define | AVFMT_FLAG_MP4A_LATM 0x8000 |
Enable RTP MP4A-LATM payload. | |
#define | AVFMT_FLAG_SORT_DTS 0x10000 |
try to interleave outputted packets by dts (using this flag can slow demuxing down) | |
#define | AVFMT_FLAG_PRIV_OPT 0x20000 |
Enable use of private options by delaying codec open (this could be made default once all code is converted) | |
#define | AVFMT_FLAG_KEEP_SIDE_DATA 0x40000 |
Don't merge side data but keep it separate. | |
#define | FF_FDEBUG_TS 0x0001 |
#define | RAW_PACKET_BUFFER_SIZE 2500000 |
Remaining size available for raw_packet_buffer, in bytes. | |
#define | AVSEEK_FLAG_BACKWARD 1 |
#define | AVSEEK_FLAG_BYTE 2 |
seeking based on position in bytes | |
#define | AVSEEK_FLAG_ANY 4 |
seek to any frame, even non-keyframes | |
#define | AVSEEK_FLAG_FRAME 8 |
seeking based on frame number | |
Enumerations | |
enum | AVStreamParseType { AVSTREAM_PARSE_NONE, AVSTREAM_PARSE_FULL, AVSTREAM_PARSE_HEADERS, AVSTREAM_PARSE_TIMESTAMPS, AVSTREAM_PARSE_FULL_ONCE, AVSTREAM_PARSE_FULL_RAW =MKTAG(0,'R','A','W') } |
enum | AVDurationEstimationMethod { AVFMT_DURATION_FROM_PTS, AVFMT_DURATION_FROM_STREAM, AVFMT_DURATION_FROM_BITRATE } |
The duration of a video can be estimated through various ways, and this enum can be used to know how the duration was estimated. More... | |
Functions | |
int | av_get_packet (AVIOContext *s, AVPacket *pkt, int size) |
Allocate and read the payload of a packet and initialize its fields with default values. | |
int | av_append_packet (AVIOContext *s, AVPacket *pkt, int size) |
Read data and append it to the current content of the AVPacket. | |
AVRational | av_stream_get_r_frame_rate (const AVStream *s) |
void | av_stream_set_r_frame_rate (AVStream *s, AVRational r) |
enum AVDurationEstimationMethod | av_fmt_ctx_get_duration_estimation_method (const AVFormatContext *ctx) |
Returns the method used to set ctx->duration. | |
unsigned | avformat_version (void) |
Return the LIBAVFORMAT_VERSION_INT constant. | |
const char * | avformat_configuration (void) |
Return the libavformat build-time configuration. | |
const char * | avformat_license (void) |
Return the libavformat license. | |
void | av_register_all (void) |
Initialize libavformat and register all the muxers, demuxers and protocols. | |
void | av_register_input_format (AVInputFormat *format) |
void | av_register_output_format (AVOutputFormat *format) |
int | avformat_network_init (void) |
Do global initialization of network components. | |
int | avformat_network_deinit (void) |
Undo the initialization done by avformat_network_init. | |
AVInputFormat * | av_iformat_next (AVInputFormat *f) |
If f is NULL, returns the first registered input format, if f is non-NULL, returns the next registered input format after f or NULL if f is the last one. | |
AVOutputFormat * | av_oformat_next (AVOutputFormat *f) |
If f is NULL, returns the first registered output format, if f is non-NULL, returns the next registered output format after f or NULL if f is the last one. | |
AVFormatContext * | avformat_alloc_context (void) |
Allocate an AVFormatContext. | |
void | avformat_free_context (AVFormatContext *s) |
Free an AVFormatContext and all its streams. | |
const AVClass * | avformat_get_class (void) |
Get the AVClass for AVFormatContext. | |
AVStream * | avformat_new_stream (AVFormatContext *s, const AVCodec *c) |
Add a new stream to a media file. | |
AVProgram * | av_new_program (AVFormatContext *s, int id) |
int | avformat_alloc_output_context2 (AVFormatContext **ctx, AVOutputFormat *oformat, const char *format_name, const char *filename) |
Allocate an AVFormatContext for an output format. | |
AVInputFormat * | av_find_input_format (const char *short_name) |
Find AVInputFormat based on the short name of the input format. | |
AVInputFormat * | av_probe_input_format (AVProbeData *pd, int is_opened) |
Guess the file format. | |
AVInputFormat * | av_probe_input_format2 (AVProbeData *pd, int is_opened, int *score_max) |
Guess the file format. | |
AVInputFormat * | av_probe_input_format3 (AVProbeData *pd, int is_opened, int *score_ret) |
Guess the file format. | |
int | av_probe_input_buffer (AVIOContext *pb, AVInputFormat **fmt, const char *filename, void *logctx, unsigned int offset, unsigned int max_probe_size) |
Probe a bytestream to determine the input format. | |
int | avformat_open_input (AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options) |
Open an input stream and read the header. | |
attribute_deprecated int | av_demuxer_open (AVFormatContext *ic) |
int | avformat_find_stream_info (AVFormatContext *ic, AVDictionary **options) |
Read packets of a media file to get stream information. | |
AVProgram * | av_find_program_from_stream (AVFormatContext *ic, AVProgram *last, int s) |
Find the programs which belong to a given stream. | |
int | av_find_best_stream (AVFormatContext *ic, enum AVMediaType type, int wanted_stream_nb, int related_stream, AVCodec **decoder_ret, int flags) |
Find the "best" stream in the file. | |
int | av_read_frame (AVFormatContext *s, AVPacket *pkt) |
Return the next frame of a stream. | |
int | av_seek_frame (AVFormatContext *s, int stream_index, int64_t timestamp, int flags) |
Seek to the keyframe at timestamp. | |
int | avformat_seek_file (AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags) |
Seek to timestamp ts. | |
int | av_read_play (AVFormatContext *s) |
Start playing a network-based stream (e.g. | |
int | av_read_pause (AVFormatContext *s) |
Pause a network-based stream (e.g. | |
void | avformat_close_input (AVFormatContext **s) |
Close an opened input AVFormatContext. | |
int | avformat_write_header (AVFormatContext *s, AVDictionary **options) |
Allocate the stream private data and write the stream header to an output media file. | |
int | av_write_frame (AVFormatContext *s, AVPacket *pkt) |
Write a packet to an output media file. | |
int | av_interleaved_write_frame (AVFormatContext *s, AVPacket *pkt) |
Write a packet to an output media file ensuring correct interleaving. | |
int | av_write_trailer (AVFormatContext *s) |
Write the stream trailer to an output media file and free the file private data. | |
AVOutputFormat * | av_guess_format (const char *short_name, const char *filename, const char *mime_type) |
Return the output format in the list of registered output formats which best matches the provided parameters, or return NULL if there is no match. | |
enum AVCodecID | av_guess_codec (AVOutputFormat *fmt, const char *short_name, const char *filename, const char *mime_type, enum AVMediaType type) |
Guess the codec ID based upon muxer and filename. | |
int | av_get_output_timestamp (struct AVFormatContext *s, int stream, int64_t *dts, int64_t *wall) |
Get timing information for the data currently output. | |
void | av_hex_dump (FILE *f, const uint8_t *buf, int size) |
Send a nice hexadecimal dump of a buffer to the specified file stream. | |
void | av_hex_dump_log (void *avcl, int level, const uint8_t *buf, int size) |
Send a nice hexadecimal dump of a buffer to the log. | |
void | av_pkt_dump2 (FILE *f, AVPacket *pkt, int dump_payload, AVStream *st) |
Send a nice dump of a packet to the specified file stream. | |
void | av_pkt_dump_log2 (void *avcl, int level, AVPacket *pkt, int dump_payload, AVStream *st) |
Send a nice dump of a packet to the log. | |
enum AVCodecID | av_codec_get_id (const struct AVCodecTag *const *tags, unsigned int tag) |
Get the AVCodecID for the given codec tag tag. | |
unsigned int | av_codec_get_tag (const struct AVCodecTag *const *tags, enum AVCodecID id) |
Get the codec tag for the given codec id id. | |
int | av_codec_get_tag2 (const struct AVCodecTag *const *tags, enum AVCodecID id, unsigned int *tag) |
Get the codec tag for the given codec id. | |
int | av_find_default_stream_index (AVFormatContext *s) |
int | av_index_search_timestamp (AVStream *st, int64_t timestamp, int flags) |
Get the index for a specific timestamp. | |
int | av_add_index_entry (AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags) |
Add an index entry into a sorted list. | |
void | av_url_split (char *proto, int proto_size, char *authorization, int authorization_size, char *hostname, int hostname_size, int *port_ptr, char *path, int path_size, const char *url) |
Split a URL string into components. | |
void | av_dump_format (AVFormatContext *ic, int index, const char *url, int is_output) |
int | av_get_frame_filename (char *buf, int buf_size, const char *path, int number) |
Return in 'buf' the path with 'd' replaced by a number. | |
int | av_filename_number_test (const char *filename) |
Check whether filename actually is a numbered sequence generator. | |
int | av_sdp_create (AVFormatContext *ac[], int n_files, char *buf, int size) |
Generate an SDP for an RTP session. | |
int | av_match_ext (const char *filename, const char *extensions) |
Return a positive value if the given filename has one of the given extensions, 0 otherwise. | |
int | avformat_query_codec (AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance) |
Test if the given container can store a codec. | |
struct AVCodecTag * | avformat_get_riff_video_tags (void) |
struct AVCodecTag * | avformat_get_riff_audio_tags (void) |
AVRational | av_guess_sample_aspect_ratio (AVFormatContext *format, AVStream *stream, AVFrame *frame) |
Guess the sample aspect ratio of a frame, based on both the stream and the frame aspect ratio. | |
AVRational | av_guess_frame_rate (AVFormatContext *ctx, AVStream *stream, AVFrame *frame) |
Guess the frame rate, based on both the container and codec information. | |
int | avformat_match_stream_specifier (AVFormatContext *s, AVStream *st, const char *spec) |
Check if the stream st contained in s is matched by the stream specifier spec. | |
int | avformat_queue_attached_pictures (AVFormatContext *s) |
Main libavformat public API header.
Definition in file avformat.h.
#define AVPROBE_SCORE_RETRY (AVPROBE_SCORE_MAX/4) |
Definition at line 340 of file avformat.h.
Referenced by av_probe_input_buffer(), init_input(), and probe_codec().
#define AVPROBE_SCORE_EXTENSION 50 |
score for file extension
Definition at line 341 of file avformat.h.
Referenced by ac3_eac3_probe(), adts_aac_probe(), aqt_probe(), av_probe_input_format3(), avr_probe(), avs_probe(), cavsvideo_probe(), cdxl_read_probe(), dts_probe(), ff_spdif_probe(), flac_probe(), h261_probe(), h263_probe(), h264_probe(), idcin_probe(), img_read_probe(), jacosub_probe(), libquvi_probe(), loas_probe(), lvf_probe(), matroska_probe(), modplug_probe(), mov_probe(), mp3_read_probe(), mpc8_probe(), mpeg4video_probe(), mpegps_probe(), mpegvideo_probe(), mpsub_probe(), mtv_probe(), nsv_probe(), oma_read_probe(), probe(), pva_probe(), read_gab2_sub(), realtext_probe(), rsd_probe(), str_probe(), subviewer1_probe(), subviewer_probe(), tak_probe(), tedcaptions_read_probe(), tta_probe(), vc1t_probe(), vmd_probe(), vqf_probe(), wsaud_probe(), and xa_probe().
#define AVPROBE_SCORE_MAX 100 |
maximum score
Definition at line 342 of file avformat.h.
Referenced by adp_probe(), aea_read_probe(), aiff_probe(), amr_probe(), apc_probe(), ape_probe(), asf_probe(), ass_probe(), ast_probe(), avi_probe(), bfi_probe(), cdata_probe(), cin_probe(), concat_probe(), dfa_probe(), dirac_probe(), dnxhd_probe(), dtshd_probe(), dv_probe(), dxa_probe(), ea_probe(), epaf_probe(), ff_spdif_probe(), ffm_probe(), film_probe(), flv_probe(), fourxm_probe(), frm_read_probe(), gif_probe(), gxf_probe(), hls_probe(), iff_probe(), ilbc_probe(), img_read_probe(), ipmovie_probe(), ircam_probe(), iss_probe(), lmlm4_probe(), lxf_probe(), matroska_probe(), microdvd_probe(), mmf_probe(), mov_probe(), mpc8_probe(), mpc_probe(), mpegts_probe(), mpl2_probe(), msnwc_tcp_probe(), mtv_probe(), mv_probe(), mxf_probe(), nc_probe(), nist_probe(), nsv_probe(), nut_probe(), nuv_probe(), ogg_probe(), oma_read_probe(), pjs_probe(), pmp_probe(), probe(), probe_gme(), pva_probe(), pvf_probe(), qcp_probe(), r3d_probe(), read_probe(), redspark_probe(), rl2_probe(), rm_probe(), roq_probe(), rpl_probe(), rtsp_probe(), sami_probe(), sap_probe(), sbg_read_probe(), seq_probe(), siff_probe(), smacker_probe(), smjpeg_probe(), smush_read_probe(), sol_probe(), sox_probe(), srt_probe(), subviewer_probe(), swf_probe(), tedcaptions_read_probe(), thp_probe(), tmv_probe(), txd_probe(), vid_probe(), vivo_probe(), voc_probe(), vplayer_probe(), vqf_probe(), wc3_probe(), webvtt_probe(), wsvqa_probe(), wv_probe(), xmv_probe(), xwma_probe(), yop_probe(), and yuv4_probe().
#define AVPROBE_PADDING_SIZE 32 |
extra allocated bytes at the end of the probe buffer
Definition at line 344 of file avformat.h.
Referenced by av_probe_input_buffer(), av_probe_input_format3(), main(), and probe_codec().
#define AVFMT_NOFILE 0x0001 |
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition at line 347 of file avformat.h.
Referenced by av_probe_input_format3(), avformat_close_input(), estimate_timings(), ffmpeg_cleanup(), img_read_header(), init_input(), main(), open_output_file(), open_slave(), probe(), seg_write_header(), tee_write_trailer(), and write_header().
#define AVFMT_NEEDNUMBER 0x0002 |
Needs 'd' in filename.
Definition at line 348 of file avformat.h.
Referenced by avformat_open_input(), and open_output_file().
#define AVFMT_SHOW_IDS 0x0008 |
Show format stream IDs numbers.
Definition at line 349 of file avformat.h.
Referenced by dump_stream_format(), and show_stream().
#define AVFMT_RAWPICTURE 0x0020 |
Format wants AVPicture structure for raw picture data.
Definition at line 350 of file avformat.h.
Referenced by do_video_out(), flush_encoders(), and write_video_frame().
#define AVFMT_GLOBALHEADER 0x0040 |
Format wants global header.
Definition at line 352 of file avformat.h.
Referenced by add_stream(), init_muxer(), and new_output_stream().
#define AVFMT_NOTIMESTAMPS 0x0080 |
Format does not need / have any timestamps.
Definition at line 353 of file avformat.h.
Referenced by av_interleaved_write_frame(), av_write_frame(), avformat_write_header(), do_video_out(), and write_frame().
#define AVFMT_GENERIC_INDEX 0x0100 |
Use generic index building code.
Definition at line 354 of file avformat.h.
Referenced by av_read_frame(), and read_frame_internal().
#define AVFMT_TS_DISCONT 0x0200 |
Format allows timestamp discontinuities.
Note, muxers always require valid (monotone) timestamps
Definition at line 355 of file avformat.h.
Referenced by process_input(), and read_thread().
#define AVFMT_VARIABLE_FPS 0x0400 |
Format allows variable fps.
Definition at line 356 of file avformat.h.
Referenced by do_video_out(), and transcode_init().
#define AVFMT_NODIMENSIONS 0x0800 |
Format does not need width/height.
Definition at line 357 of file avformat.h.
Referenced by init_muxer().
#define AVFMT_NOSTREAMS 0x1000 |
Format does not require any streams.
Definition at line 358 of file avformat.h.
Referenced by init_muxer(), and transcode_init().
#define AVFMT_NOBINSEARCH 0x2000 |
Format does not allow to fall back on binary search via read_timestamp.
Definition at line 359 of file avformat.h.
Referenced by seek_frame_internal().
#define AVFMT_NOGENSEARCH 0x4000 |
Format does not allow to fall back on generic search.
Definition at line 360 of file avformat.h.
Referenced by seek_frame_internal().
#define AVFMT_NO_BYTE_SEEK 0x8000 |
Format does not allow seeking by bytes.
Definition at line 361 of file avformat.h.
Referenced by seek_frame_internal().
#define AVFMT_ALLOW_FLUSH 0x10000 |
Format allows flushing.
If not set, the muxer will not receive a NULL packet in the write_packet function.
Definition at line 362 of file avformat.h.
Referenced by av_write_frame().
#define AVFMT_TS_NONSTRICT 0x8020000 |
Format does not require strictly increasing timestamps, but they must still be monotonic.
Definition at line 364 of file avformat.h.
Referenced by compute_pkt_fields2(), and write_frame().
#define AVFMT_TS_NEGATIVE 0x40000 |
Format allows muxing negative timestamps.
If not set the timestamp will be shifted in av_write_frame and av_interleaved_write_frame so they start from 0. The user or muxer can override this through AVFormatContext.avoid_negative_ts
Definition at line 371 of file avformat.h.
Referenced by avformat_write_header().
#define AVFMT_SEEK_TO_PTS 0x4000000 |
Seeking is based on PTS.
Definition at line 380 of file avformat.h.
#define AVINDEX_KEYFRAME 0x0001 |
Definition at line 608 of file avformat.h.
Referenced by ape_read_header(), asf_build_simple_index(), asf_read_pts(), av_read_frame(), avi_read_idx1(), avi_sync(), clean_index(), ff_index_search_timestamp(), find_and_decode_index(), flv_read_packet(), img_read_packet(), matroska_add_index_entries(), matroska_parse_block(), mov_build_index(), mov_read_packet(), mov_read_trun(), mpc8_parse_seektable(), mpc_read_packet(), mpegps_read_pes_header(), mpegts_get_dts(), mv_read_header(), mxf_compute_ptses_fake_index(), nsv_parse_NSVs_header(), nut_write_packet(), nuv_read_dts(), parse_keyframes_index(), pmp_header(), pva_read_header(), read_braindead_odml_indx(), read_frame_internal(), read_header(), read_index(), read_pakt_chunk(), read_part_of_packet(), read_xing_toc(), rl2_read_header(), rm_read_dts(), rm_read_index(), rm_read_packet(), tta_read_header(), wv_read_packet(), and xwma_read_header().
#define AV_DISPOSITION_DEFAULT 0x0001 |
Definition at line 614 of file avformat.h.
Referenced by dump_stream_format(), matroska_read_header(), and mkv_write_tracks().
#define AV_DISPOSITION_DUB 0x0002 |
Definition at line 615 of file avformat.h.
Referenced by dump_stream_format().
#define AV_DISPOSITION_ORIGINAL 0x0004 |
Definition at line 616 of file avformat.h.
Referenced by dump_stream_format().
#define AV_DISPOSITION_COMMENT 0x0008 |
Definition at line 617 of file avformat.h.
Referenced by avformat_find_stream_info(), and dump_stream_format().
#define AV_DISPOSITION_LYRICS 0x0010 |
Definition at line 618 of file avformat.h.
Referenced by dump_stream_format().
#define AV_DISPOSITION_KARAOKE 0x0020 |
Definition at line 619 of file avformat.h.
Referenced by avformat_find_stream_info(), and dump_stream_format().
#define AV_DISPOSITION_FORCED 0x0040 |
Track should be used during playback by default.
Useful for subtitle track that should be displayed even when user did not explicitly ask for subtitles.
Definition at line 626 of file avformat.h.
Referenced by dump_stream_format(), matroska_read_header(), and mkv_write_tracks().
#define AV_DISPOSITION_HEARING_IMPAIRED 0x0080 |
stream for hearing impaired audiences
Definition at line 627 of file avformat.h.
Referenced by av_find_best_stream(), avformat_find_stream_info(), dump_stream_format(), ff_parse_mpeg2_descriptor(), mpegts_write_pmt(), and parse_chunks().
#define AV_DISPOSITION_VISUAL_IMPAIRED 0x0100 |
stream for visual impaired audiences
Definition at line 628 of file avformat.h.
Referenced by av_find_best_stream(), avformat_find_stream_info(), dump_stream_format(), ff_parse_mpeg2_descriptor(), mpegts_write_pmt(), and parse_chunks().
#define AV_DISPOSITION_CLEAN_EFFECTS 0x0200 |
stream without voice
Definition at line 629 of file avformat.h.
Referenced by avformat_find_stream_info(), dump_stream_format(), ff_parse_mpeg2_descriptor(), and mpegts_write_pmt().
#define AV_DISPOSITION_ATTACHED_PIC 0x0400 |
The stream is stored in the file as an attached picture/"cover art" (e.g.
APIC frame in ID3v2). The single packet associated with it will be returned among the first few packets read from the file unless seeking takes place. It can also be accessed at any time in AVStream.attached_pic.
Definition at line 636 of file avformat.h.
Referenced by ape_tag_read_field(), asf_read_picture(), av_find_default_stream_index(), avformat_find_stream_info(), avformat_queue_attached_pictures(), ff_flac_parse_picture(), ff_id3v2_parse_apic(), get_attachment(), mov_read_covr(), open_output_file(), read_thread(), and select_reference_stream().
#define AV_DISPOSITION_CAPTIONS 0x10000 |
To specify text track kind (different from subtitles default).
Definition at line 641 of file avformat.h.
Referenced by mkv_write_tracks().
#define AV_DISPOSITION_DESCRIPTIONS 0x20000 |
Definition at line 642 of file avformat.h.
Referenced by mkv_write_tracks().
#define AV_DISPOSITION_METADATA 0x40000 |
Definition at line 643 of file avformat.h.
Referenced by mkv_write_tracks().
#define AV_PTS_WRAP_IGNORE 0 |
Options for behavior on timestamp wrap detection.
ignore the wrap
Definition at line 648 of file avformat.h.
Referenced by av_new_program(), avformat_new_stream(), and wrap_timestamp().
#define AV_PTS_WRAP_ADD_OFFSET 1 |
add the format specific offset on wrap detection
Definition at line 649 of file avformat.h.
Referenced by update_wrap_reference(), and wrap_timestamp().
#define AV_PTS_WRAP_SUB_OFFSET -1 |
subtract the format specific offset on wrap detection
Definition at line 650 of file avformat.h.
Referenced by update_initial_timestamps(), update_wrap_reference(), and wrap_timestamp().
#define MAX_STD_TIMEBASES (60*12+6) |
Stream information used internally by av_find_stream_info()
Definition at line 754 of file avformat.h.
Referenced by avformat_find_stream_info().
#define MAX_PROBE_PACKETS 2500 |
Number of packets to buffer for codec probing.
Definition at line 795 of file avformat.h.
Referenced by avformat_new_stream(), ff_read_frame_flush(), ff_store_parser_state(), and set_codec_from_probe_data().
#define MAX_REORDER_DELAY 16 |
Definition at line 812 of file avformat.h.
Referenced by avformat_new_stream(), compute_pkt_fields(), compute_pkt_fields2(), ff_read_frame_flush(), and update_initial_timestamps().
#define AV_PROGRAM_RUNNING 1 |
Definition at line 896 of file avformat.h.
#define AVFMTCTX_NOHEADER 0x0001 |
signal that no header is present (streams are added dynamically)
Definition at line 930 of file avformat.h.
Referenced by amf_parse_object(), avformat_find_stream_info(), avs_read_header(), cdxl_read_header(), create_stream(), ff_rtsp_open_transport_ctx(), flv_read_header(), hls_read_header(), img_read_header(), mpegps_read_header(), mpegts_read_header(), read_header(), roq_read_header(), sap_fetch_packet(), sap_read_header(), spdif_read_header(), str_read_header(), swf_read_header(), vid_read_header(), and wsvqa_read_header().
#define AVFMT_FLAG_GENPTS 0x0001 |
Generate missing pts even if it requires parsing future frames.
Definition at line 1037 of file avformat.h.
Referenced by av_read_frame(), open_input_stream(), and read_thread().
#define AVFMT_FLAG_IGNIDX 0x0002 |
Ignore index.
Definition at line 1038 of file avformat.h.
Referenced by avi_read_header(), gxf_read_index(), matroska_execute_seekhead(), mov_read_default(), parse_keyframes_index(), and rm_read_header().
#define AVFMT_FLAG_NONBLOCK 0x0004 |
Do not block when reading packets from input.
Definition at line 1039 of file avformat.h.
Referenced by device_open(), dshow_read_packet(), fbdev_read_header(), fbdev_read_packet(), ff_alsa_open(), open_input_file(), vfw_read_packet(), and write_header().
#define AVFMT_FLAG_IGNDTS 0x0008 |
Ignore DTS on frames that contain both DTS & PTS.
Definition at line 1040 of file avformat.h.
Referenced by compute_pkt_fields().
#define AVFMT_FLAG_NOFILLIN 0x0010 |
Do not infer any values from other values, just return what is stored in the container.
Definition at line 1041 of file avformat.h.
Referenced by compute_pkt_fields(), and extract_mpeg4_header().
#define AVFMT_FLAG_NOPARSE 0x0020 |
Do not use AVParsers, you also must set AVFMT_FLAG_NOFILLIN as the fillin code works on frames and no parsing -> no frames. Also seeking to frames can not work if parsing to find frame boundaries has been disabled.
Definition at line 1042 of file avformat.h.
Referenced by avformat_find_stream_info(), extract_mpeg4_header(), and read_frame_internal().
#define AVFMT_FLAG_NOBUFFER 0x0040 |
Do not buffer frames when possible.
Definition at line 1043 of file avformat.h.
Referenced by avformat_find_stream_info().
#define AVFMT_FLAG_CUSTOM_IO 0x0080 |
The caller has supplied a custom AVIOContext, don't avio_close() it.
Definition at line 1044 of file avformat.h.
Referenced by avformat_close_input(), avformat_open_input(), hls_read_header(), and init_input().
#define AVFMT_FLAG_DISCARD_CORRUPT 0x0100 |
Discard frames marked corrupted.
Definition at line 1045 of file avformat.h.
Referenced by ff_read_packet().
#define AVFMT_FLAG_MP4A_LATM 0x8000 |
Enable RTP MP4A-LATM payload.
Definition at line 1046 of file avformat.h.
Referenced by ff_rtp_chain_mux_open().
#define AVFMT_FLAG_SORT_DTS 0x10000 |
try to interleave outputted packets by dts (using this flag can slow demuxing down)
Definition at line 1047 of file avformat.h.
Referenced by avi_read_header().
#define AVFMT_FLAG_PRIV_OPT 0x20000 |
Enable use of private options by delaying codec open (this could be made default once all code is converted)
Definition at line 1048 of file avformat.h.
Referenced by avformat_open_input().
#define AVFMT_FLAG_KEEP_SIDE_DATA 0x40000 |
Don't merge side data but keep it separate.
Definition at line 1049 of file avformat.h.
Referenced by ff_read_packet().
#define FF_FDEBUG_TS 0x0001 |
Definition at line 1146 of file avformat.h.
Referenced by read_frame_internal().
#define RAW_PACKET_BUFFER_SIZE 2500000 |
Remaining size available for raw_packet_buffer, in bytes.
Definition at line 1275 of file avformat.h.
Referenced by avformat_open_input(), ff_store_parser_state(), and flush_packet_queue().
#define AVSEEK_FLAG_BACKWARD 1 |
seek backward
Definition at line 1771 of file avformat.h.
Referenced by av_seek_frame(), avformat_seek_file(), avi_read_packet(), avi_read_seek(), ff_gen_search(), ff_index_search_timestamp(), ff_pcm_read_seek(), ff_seek_frame_binary(), ffm_seek(), gxf_seek(), hls_read_seek(), matroska_read_seek(), movie_common_init(), nut_read_seek(), nut_write_packet(), read_seek(), rewind_file(), rl2_read_seek(), rtmp_read_seek(), and vqf_read_seek().
#define AVSEEK_FLAG_BYTE 2 |
seeking based on position in bytes
Definition at line 1772 of file avformat.h.
Referenced by concat_seek(), ff_gen_syncpoint_search(), ff_subtitles_queue_seek(), hls_read_seek(), mv_read_seek(), read_seek(), read_thread(), rtmp_read_seek(), search_hi_lo_keyframes(), seek_frame_internal(), and stream_seek().
#define AVSEEK_FLAG_ANY 4 |
seek to any frame, even non-keyframes
Definition at line 1773 of file avformat.h.
Referenced by avformat_seek_file(), avi_read_packet(), avi_read_seek(), ff_add_index_entry(), ff_index_search_timestamp(), gxf_seek(), hls_read_packet(), matroska_read_seek(), ogg_read_seek(), read_packet(), and search_hi_lo_keyframes().
#define AVSEEK_FLAG_FRAME 8 |
seeking based on frame number
Definition at line 1774 of file avformat.h.
Referenced by concat_seek(), ff_subtitles_queue_seek(), mv_read_seek(), and read_seek().
enum AVStreamParseType |
Definition at line 589 of file avformat.h.
The duration of a video can be estimated through various ways, and this enum can be used to know how the duration was estimated.
Definition at line 945 of file avformat.h.
int av_get_packet | ( | AVIOContext * | s, |
AVPacket * | pkt, | ||
int | size | ||
) |
Allocate and read the payload of a packet and initialize its fields with default values.
pkt | packet |
size | desired payload size |
Definition at line 176 of file utils.c.
Referenced by adp_read_packet(), adx_read_packet(), aea_read_packet(), afc_read_packet(), aiff_read_packet(), apc_read_packet(), ape_tag_read_field(), asf_read_header(), asf_read_picture(), ast_read_packet(), av_append_packet(), bfi_read_packet(), cdata_read_packet(), cdxl_read_packet(), cin_read_packet(), daud_packet(), dfa_read_packet(), dxa_read_packet(), ea_read_packet(), ff_pcm_read_packet(), ff_rm_parse_packet(), ff_rm_retrieve_cache(), ff_voc_get_packet(), film_read_packet(), flv_data_packet(), flv_read_packet(), fourxm_read_packet(), frm_read_packet(), g729_read_packet(), get_attachment(), gif_read_packet(), gsm_read_packet(), gxf_packet(), idcin_read_packet(), iff_read_packet(), ingenient_read_packet(), iss_read_packet(), lmlm4_read_packet(), load_ipmovie_packet(), lvf_read_packet(), mmf_read_packet(), mov_read_covr(), mov_read_packet(), mp3_read_packet(), mpc8_read_packet(), mpegps_read_packet(), msnwc_tcp_read_packet(), mtv_read_packet(), mv_read_packet(), mxf_decrypt_triplet(), mxf_get_d10_aes3_packet(), mxf_read_packet(), mxf_read_packet_old(), nc_read_packet(), nsv_read_chunk(), nuv_packet(), oma_read_packet(), pmp_packet(), pva_read_packet(), qcp_read_packet(), r3d_read_reda(), r3d_read_redv(), raw_read_packet(), rawvideo_read_packet(), read_packet(), redspark_read_packet(), rl2_read_packet(), roq_read_packet(), rpl_read_packet(), rsd_read_packet(), seq_read_packet(), siff_read_packet(), smjpeg_read_packet(), smush_read_packet(), sol_read_packet(), swf_read_packet(), thp_read_packet(), tmv_read_packet(), tta_read_packet(), txd_read_packet(), vc1t_read_packet(), vid_read_packet(), vivo_read_packet(), wc3_read_packet(), wsaud_read_packet(), wsvqa_read_packet(), xa_read_packet(), xmv_fetch_audio_packet(), xmv_fetch_video_packet(), xwma_read_packet(), yop_read_packet(), and yuv4_read_packet().
int av_append_packet | ( | AVIOContext * | s, |
AVPacket * | pkt, | ||
int | size | ||
) |
Read data and append it to the current content of the AVPacket.
If pkt->size is 0 this is identical to av_get_packet. Note that this uses av_grow_packet and thus involves a realloc which is inefficient. Thus this function should only be used when there is no reasonable way to know (an upper bound of) the final size.
pkt | packet |
size | amount of data to read |
Definition at line 186 of file utils.c.
Referenced by dfa_read_packet(), ea_read_packet(), read_packet(), vivo_read_packet(), wc3_read_header(), and wc3_read_packet().
AVRational av_stream_get_r_frame_rate | ( | const AVStream * | s | ) |
void av_stream_set_r_frame_rate | ( | AVStream * | s, |
AVRational | r | ||
) |
enum AVDurationEstimationMethod av_fmt_ctx_get_duration_estimation_method | ( | const AVFormatContext * | ctx | ) |
int avformat_alloc_output_context2 | ( | AVFormatContext ** | ctx, |
AVOutputFormat * | oformat, | ||
const char * | format_name, | ||
const char * | filename | ||
) |
Allocate an AVFormatContext for an output format.
avformat_free_context() can be used to free the context and everything allocated by the framework within it.
*ctx | is set to the created format context, or to NULL in case of failure |
oformat | format to use for allocating the context, if NULL format_name and filename are used instead |
format_name | the name of output format to use for allocating the context, if NULL filename is used instead |
filename | the name of the filename to use for allocating the context, may be NULL |
Definition at line 123 of file mux.c.
Referenced by main(), open_output_file(), and open_slave().