Format I/O context. More...

#include <avformat.h>

Collaboration diagram for AVFormatContext:

Data Fields
const AVClass *	av_class
	A class for logging and AVOptions. More...

struct AVInputFormat *	iformat
	Can only be iformat or oformat, not both at the same time. More...

struct AVOutputFormat *	oformat

void *	priv_data
	Format private data. More...

AVIOContext *	pb
	I/O context. More...

int	ctx_flags
	Format-specific flags, see AVFMTCTX_xx. More...

unsigned int	nb_streams
	A list of all streams in the file. More...

AVStream **	streams

char	filename [1024]
	input or output filename More...

int64_t	start_time
	Decoding: position of the first frame of the component, in AV_TIME_BASE fractional seconds. More...

int64_t	duration
	Decoding: duration of the stream, in AV_TIME_BASE fractional seconds. More...

int	bit_rate
	Decoding: total stream bitrate in bit/s, 0 if not available. More...

unsigned int	packet_size

int	max_delay

int	flags

unsigned int	probesize
	decoding: size of data to probe; encoding: unused. More...

int	max_analyze_duration
	decoding: maximum time (in AV_TIME_BASE units) during which the input should be analyzed in avformat_find_stream_info(). More...

const uint8_t *	key

int	keylen

unsigned int	nb_programs

AVProgram **	programs

enum AVCodecID	video_codec_id
	Forced video codec_id. More...

enum AVCodecID	audio_codec_id
	Forced audio codec_id. More...

enum AVCodecID	subtitle_codec_id
	Forced subtitle codec_id. More...

unsigned int	max_index_size
	Maximum amount of memory in bytes to use for the index of each stream. More...

unsigned int	max_picture_buffer
	Maximum amount of memory in bytes to use for buffering frames obtained from realtime capture devices. More...

unsigned int	nb_chapters

AVChapter **	chapters

AVDictionary *	metadata

int64_t	start_time_realtime
	Start time of the stream in real world time, in microseconds since the unix epoch (00:00 1st January 1970). More...

int	fps_probe_size
	decoding: number of frames used to probe fps More...

int	error_recognition
	Error recognition; higher values will detect more errors but may misdetect some more or less valid parts as errors. More...

AVIOInterruptCB	interrupt_callback
	Custom interrupt callbacks for the I/O layer. More...

int	debug
	Flags to enable debugging. More...

int	ts_id
	Transport stream id. More...

int	audio_preload
	Audio preload in microseconds. More...

int	max_chunk_duration
	Max chunk time in microseconds. More...

int	max_chunk_size
	Max chunk size in bytes Note, not all formats support this and unpredictable things may happen if it is used when not supported. More...

int	use_wallclock_as_timestamps
	forces the use of wallclock timestamps as pts/dts of packets This has undefined results in the presence of B frames. More...

int	avoid_negative_ts
	Avoid negative timestamps during muxing. More...

int	avio_flags
	avio flags, used to force AVIO_FLAG_DIRECT. More...

enum AVDurationEstimationMethod	duration_estimation_method
	The duration field can be estimated through various ways, and this field can be used to know how the duration was estimated. More...

unsigned int	skip_initial_bytes
	Skip initial bytes when opening stream. More...

unsigned int	correct_ts_overflow
	Correct single timestamp overflows. More...

int	seek2any
	Force seeking to any (also non key) frames. More...

int	flush_packets
	Flush the I/O context after each packet. More...

struct AVPacketList *	packet_buffer
	This buffer is only needed when packets were already buffered but not decoded, for example to get the codec parameters in MPEG streams. More...

struct AVPacketList *	packet_buffer_end

int64_t	data_offset
	offset of the first packet More...

struct AVPacketList *	raw_packet_buffer
	Raw packets from the demuxer, prior to parsing and decoding. More...

struct AVPacketList *	raw_packet_buffer_end

struct AVPacketList *	parse_queue
	Packets split by the parser get queued here. More...

struct AVPacketList *	parse_queue_end

int	raw_packet_buffer_remaining_size

int	io_repositioned
	IO repositioned flag. More...

Detailed Description

Format I/O context.

New fields can be added to the end with minor version bumps. Removal, reordering and changes to existing fields require a major version bump. sizeof(AVFormatContext) must not be used outside libav*, use avformat_alloc_context() to create an AVFormatContext.

Definition at line 944 of file avformat.h.

Field Documentation

enum AVCodecID AVFormatContext::audio_codec_id

Forced audio codec_id.

Demuxing: Set by user.

Definition at line 1063 of file avformat.h.

Referenced by audio_read_header(), ff_voc_get_packet(), flv_read_packet(), force_codec_ids(), img_read_header(), open_input_file(), and pulse_read_header().

int AVFormatContext::audio_preload

Audio preload in microseconds.

Note, not all formats support this and unpredictable things may happen if it is used when not supported.

encoding: Set by user via AVOptions (NO direct access)
decoding: unused

Definition at line 1145 of file avformat.h.

Referenced by ff_interleave_compare_dts().

const AVClass* AVFormatContext::av_class

A class for logging and AVOptions.

Set by avformat_alloc_context(). Exports (de)muxer private options if they exist.

Definition at line 949 of file avformat.h.

Referenced by avformat_get_context_defaults(), and avformat_open_input().

int AVFormatContext::avio_flags

avio flags, used to force AVIO_FLAG_DIRECT.

encoding: unused
decoding: Set by user via AVOptions (NO direct access)

Definition at line 1187 of file avformat.h.

Referenced by init_input().

int AVFormatContext::avoid_negative_ts

Avoid negative timestamps during muxing.

0 -> allow negative timestamps 1 -> avoid negative timestamps -1 -> choose automatically (default) Note, this only works when interleave_packet_per_dts is in use.

encoding: Set by user via AVOptions (NO direct access)
decoding: unused

Definition at line 1180 of file avformat.h.

Referenced by asf_write_header(), ff_interleave_packet_per_dts(), mkv_write_header(), mov_write_header(), nut_write_header(), and seg_write_header().

int AVFormatContext::bit_rate

Decoding: total stream bitrate in bit/s, 0 if not available.

Never set it directly if the file_size and the duration are known as FFmpeg can compute it automatically.

Definition at line 1016 of file avformat.h.

Referenced by 7digital-python.lockerEndpoint.Format::__init__(), av_dump_format(), dv_read_header(), estimate_timings(), estimate_timings_from_bit_rate(), event_loop(), ff_spdif_read_packet(), g729_read_header(), mpegts_read_header(), mxf_read_seek(), show_format(), and update_stream_timings().

AVChapter** AVFormatContext::chapters

unsigned int AVFormatContext::correct_ts_overflow

Correct single timestamp overflows.

encoding: unused
decoding: Set by user via AVOPtions (NO direct access)

Definition at line 1209 of file avformat.h.

Referenced by update_wrap_reference().

int AVFormatContext::ctx_flags

Format-specific flags, see AVFMTCTX_xx.

Definition at line 980 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().

int64_t AVFormatContext::data_offset

offset of the first packet

Definition at line 1242 of file avformat.h.

Referenced by asf_build_simple_index(), asf_read_pts(), av_demuxer_open(), avformat_open_input(), dv_frame_offset(), ff_asf_get_packet(), ff_gen_search(), ff_pcm_read_seek(), mtv_read_packet(), nut_read_header(), ogg_get_length(), ogg_packet(), r3d_read_header(), seek_frame_byte(), seek_frame_generic(), vqf_read_seek(), and yop_read_seek().

int AVFormatContext::debug

Flags to enable debugging.

Definition at line 1130 of file avformat.h.

Referenced by read_frame_internal().

int64_t AVFormatContext::duration

Decoding: duration of the stream, in AV_TIME_BASE fractional seconds.

Only set this value if you know none of the individual stream durations and also do not set any of them. This is deduced from the AVStream values if not set.

Definition at line 1009 of file avformat.h.

Referenced by amf_parse_object(), av_dump_format(), avformat_open_input(), avi_read_header(), compute_chapters_end(), concat_read_header(), dxa_read_header(), estimate_timings(), estimate_timings_from_bit_rate(), event_loop(), fill_all_stream_timings(), find_and_decode_index(), flv_read_packet(), flv_write_header(), get_sockaddr(), handle_file(), has_duration(), hls_read_header(), hls_read_seek(), matroska_read_header(), mov_read_mvhd(), mov_read_trex(), ogg_get_length(), open_next_file(), open_output_file(), read_header(), rm_read_header(), show_format(), update_stream_timings(), vivo_read_header(), and wv_read_seek().

enum AVDurationEstimationMethod AVFormatContext::duration_estimation_method

The duration field can be estimated through various ways, and this field can be used to know how the duration was estimated.

encoding: unused
decoding: Read by user via AVOptions (NO direct access)

Definition at line 1195 of file avformat.h.

Referenced by av_fmt_ctx_get_duration_estimation_method(), estimate_timings(), and find_duration().

int AVFormatContext::error_recognition

Error recognition; higher values will detect more errors but may misdetect some more or less valid parts as errors.

encoding: unused
decoding: Set by user.

Definition at line 1114 of file avformat.h.

Referenced by avi_read_header(), ebml_parse_id(), matroska_read_header(), and parse_picture().

char AVFormatContext::filename[1024]

input or output filename

Definition at line 994 of file avformat.h.

Referenced by add_file(), append_entry(), audio_read_header(), audio_write_header(), avformat_alloc_output_context2(), avformat_open_input(), avisynth_open_file(), caca_write_header(), choose_encoder(), dc1394_read_common(), device_open(), dv1394_read_header(), extract_mpeg4_header(), fbdev_read_header(), ff_alsa_open(), ff_rtsp_open_transport_ctx(), ff_rtsp_setup_output_streams(), grab_read_header(), gxf_write_material_data_section(), hls_read_header(), hls_start(), hls_window(), hls_write_header(), iec61883_read_header(), img_read_header(), ipod_get_codec_tag(), is_realtime(), ism_write_header(), ism_write_trailer(), lavfi_read_header(), libquvi_read_header(), mov_read_trak(), mpegts_write_header(), nsv_read_header(), open_output_file(), parse_device_name(), prepare_sdp_description(), process_input(), pulse_read_header(), read_header(), read_thread(), resetup_tcp(), rtp_new_av_stream(), rtsp_listen(), sap_read_header(), sap_write_header(), sdl_write_header(), seg_write_header(), seg_write_packet(), segment_end(), segment_start(), set_segment_filename(), shift_data(), show_format(), start_jack(), tee_write_header(), transcode_init(), vfw_read_header(), write_header(), write_manifest(), and x11grab_read_header().

int AVFormatContext::flags

int AVFormatContext::flush_packets

Flush the I/O context after each packet.

encoding: Set by user via AVOptions (NO direct access)
decoding: unused

Definition at line 1223 of file avformat.h.

Referenced by av_write_frame(), and split_write_packet().

int AVFormatContext::fps_probe_size

decoding: number of frames used to probe fps

Definition at line 1106 of file avformat.h.

Referenced by avformat_find_stream_info().

struct AVInputFormat* AVFormatContext::iformat

Can only be iformat or oformat, not both at the same time.

decoding: set by avformat_open_input(). encoding: set by the user.

Definition at line 957 of file avformat.h.

Referenced by adts_aac_read_header(), adx_read_header(), av_demuxer_open(), av_dump_format(), av_read_frame(), av_read_pause(), av_read_play(), avformat_close_input(), avformat_free_context(), avformat_new_stream(), avformat_open_input(), avformat_seek_file(), compute_pkt_fields(), dump_stream_format(), estimate_timings(), ff_raw_audio_read_header(), ff_raw_video_read_header(), ff_read_packet(), ff_rtsp_open_transport_ctx(), ff_seek_frame_binary(), format_child_next(), format_to_name(), get_category(), gsm_read_header(), img_read_header(), init_input(), is_realtime(), loas_read_header(), mpegts_read_header(), open_input_stream(), pcm_read_header(), process_input(), rawvideo_read_header(), read_frame_internal(), read_thread(), seek_frame_generic(), seek_frame_internal(), show_format(), and show_stream().

AVIOInterruptCB AVFormatContext::interrupt_callback

Custom interrupt callbacks for the I/O layer.

decoding: set by the user before avformat_open_input(). encoding: set by the user before avformat_write_header() (mainly useful for AVFMT_NOFILE formats). The callback should also be passed to avio_open2() if it's used to open the file.

Definition at line 1125 of file avformat.h.

Referenced by avformat_find_stream_info(), copy_moof(), ff_rtp_chain_mux_open(), ff_rtsp_open_transport_ctx(), hls_mux_init(), hls_read_header(), hls_start(), hls_window(), img_read_packet(), init_input(), ism_flush(), ism_seek(), ism_write_header(), mov_read_trak(), open_input(), open_input_file(), open_output_file(), parse_fragment(), read_ffserver_streams(), read_thread(), rtsp_listen(), rtsp_read_setup(), sap_read_header(), sap_write_header(), seg_write_header(), segment_list_open(), segment_mux_init(), segment_start(), transcode_init(), write_manifest(), and write_packet().

int AVFormatContext::io_repositioned

IO repositioned flag.

This is set by avformat when the underlaying IO context read pointer is repositioned, for example when doing byte based seeking. Demuxers can use the flag to detect such changes.

Definition at line 1269 of file avformat.h.

Referenced by ogg_read_packet(), and seek_frame_byte().

const uint8_t* AVFormatContext::key

Definition at line 1047 of file avformat.h.

Referenced by 7digital-python.lib.oauth7digital.Oauth7digital::__consumer(), 7digital-python.lib.oauth7digital.Oauth7digital::__init__(), 7digital-python.lib.oauth.OAuthConsumer::__init__(), 7digital-python.lib.oauth.OAuthToken::__init__(), 7digital-python.lib.oauth7digital.Oauth7digital::authorize_request_token(), decrypt_init(), ff_asf_parse_packet(), mxf_decrypt_triplet(), and 7digital-python.lib.oauth.OAuthToken::to_string().

int AVFormatContext::keylen

Definition at line 1048 of file avformat.h.

Referenced by asf_read_header(), decrypt_init(), ff_asf_parse_packet(), and mxf_decrypt_triplet().

int AVFormatContext::max_analyze_duration

decoding: maximum time (in AV_TIME_BASE units) during which the input should be analyzed in avformat_find_stream_info().

Definition at line 1045 of file avformat.h.

Referenced by avformat_find_stream_info().

int AVFormatContext::max_chunk_duration

Max chunk time in microseconds.

Note, not all formats support this and unpredictable things may happen if it is used when not supported.

encoding: Set by user via AVOptions (NO direct access)
decoding: unused

Definition at line 1153 of file avformat.h.

Referenced by ff_interleave_add_packet().

int AVFormatContext::max_chunk_size

Max chunk size in bytes Note, not all formats support this and unpredictable things may happen if it is used when not supported.

encoding: Set by user via AVOptions (NO direct access)
decoding: unused

Definition at line 1161 of file avformat.h.

Referenced by ff_interleave_add_packet().

int AVFormatContext::max_delay

Definition at line 1019 of file avformat.h.

Referenced by ff_rtp_chain_mux_open(), ff_rtsp_open_transport_ctx(), http_prepare_data(), mpeg_mux_init(), mpegts_write_header(), mpegts_write_packet_internal(), mpegts_write_pes(), open_output_file(), output_packet(), rtp_write_header(), and sap_read_header().

unsigned int AVFormatContext::max_index_size

Maximum amount of memory in bytes to use for the index of each stream.

If the index exceeds this size, entries will be discarded as needed to maintain a smaller size. This can lead to slower or less accurate seeking (depends on demuxer). Demuxers for which a full in-memory index is mandatory will ignore this. muxing : unused demuxing: set by user

Definition at line 1081 of file avformat.h.

Referenced by ff_reduce_index().

unsigned int AVFormatContext::max_picture_buffer

Maximum amount of memory in bytes to use for buffering frames obtained from realtime capture devices.

Definition at line 1087 of file avformat.h.

Referenced by shall_we_drop().

AVDictionary* AVFormatContext::metadata

Definition at line 1092 of file avformat.h.

Referenced by add_metadata(), amf_parse_object(), ape_tag_read_field(), asf_read_header(), asf_write_header1(), av_dump_format(), avformat_free_context(), avi_read_header(), avi_read_nikon(), avi_read_tag(), caf_write_header(), close_connection(), decode_info_header(), dtshd_read_header(), dv_init_mux(), dv_read_timecode(), dv_write_header(), export_orphan_timecode(), ff_ape_write(), ff_id3v2_read(), ff_id3v2_write_metadata(), ff_metadata_conv_ctx(), ff_mov_read_stsd_entries(), ff_rm_read_mdpr_codecdata(), ff_sauce_read(), ff_wms_parse_sdp_a_line(), ffm_write_header(), flac_read_header(), flac_write_header(), flv_write_header(), get_meta(), get_metadata(), get_sockaddr(), get_string(), get_tag(), gxf_header(), gxf_write_header(), gxf_write_umf_material_description(), http_prepare_data(), id3v1_create_tag(), id3v1_set_string(), init_muxer(), libquvi_read_header(), main(), matroska_convert_tags(), matroska_read_header(), mkv_write_header(), mkv_write_tags(), mkv_write_tracks(), modplug_load_metadata(), mov_metadata_gnre(), mov_metadata_int8_bypass_padding(), mov_metadata_int8_no_padding(), mov_metadata_raw(), mov_metadata_track_or_disc_number(), mov_read_ftyp(), mov_read_mvhd(), mov_read_udta_string(), mov_write_3gp_udta_tag(), mov_write_header(), mov_write_int8_metadata(), mov_write_string_metadata(), mov_write_tmpo_tag(), mov_write_trkn_tag(), mov_write_uuidusmt_tag(), mp3_read_header(), mpc_read_header(), mpegts_write_header(), mxf_parse_structural_metadata(), mxf_write_header(), nist_read_header(), nsv_parse_NSVf_header(), ogg_write_header(), open_output_file(), parse_legacy_attrib(), parse_tag(), prepare_sdp_description(), put_id3v2_tags(), put_meta(), read_header(), read_info_chunk(), read_thread(), read_ttag(), rm_read_metadata(), rpl_read_header(), rv10_write_header(), sap_write_header(), segment_mux_init(), show_format(), smjpeg_read_header(), smjpeg_write_header(), sox_read_header(), sox_write_header(), subviewer_read_header(), tta_read_header(), var_read_metadata(), vivo_read_header(), vqf_read_header(), wc3_read_header(), write_globalinfo(), write_table_entries_attrib(), write_table_redirector_legacy_attrib(), write_trailer(), and wv_read_header().

unsigned int AVFormatContext::nb_chapters

unsigned int AVFormatContext::nb_programs

Definition at line 1050 of file avformat.h.

Referenced by av_dump_format(), av_find_program_from_stream(), av_new_program(), avformat_free_context(), avformat_match_stream_specifier(), clear_avprogram(), discard_pid(), ff_metadata_conv_ctx(), ff_program_add_stream_index(), pat_cb(), set_pcr_pid(), transcode_init(), and update_stream_timings().

unsigned int AVFormatContext::nb_streams

A list of all streams in the file.

New streams are created with avformat_new_stream().

decoding: streams are created by libavformat in avformat_open_input(). If AVFMTCTX_NOHEADER is set in ctx_flags, then new streams may also appear in av_read_frame(). encoding: streams are created by the user before avformat_write_header().

Definition at line 991 of file avformat.h.

Referenced by add_input_streams(), add_stream(), aiff_write_header(), amf_parse_object(), asf_read_pts(), asf_read_stream_properties(), asf_reset_header(), asf_write_header1(), asfrtp_parse_packet(), asfrtp_parse_sdp_line(), ast_write_header(), av_dump_format(), av_find_best_stream(), av_find_default_stream_index(), av_write_trailer(), avformat_find_stream_info(), avformat_free_context(), avformat_match_stream_specifier(), avformat_new_stream(), avformat_queue_attached_pictures(), avformat_seek_file(), avi_read_close(), avi_read_header(), avi_read_idx1(), avi_read_packet(), avi_read_seek(), avi_start_new_riff(), avi_sync(), avi_write_counters(), avi_write_header(), avi_write_idx1(), avi_write_ix(), avi_write_trailer(), avisynth_next_stream(), build_feed_streams(), build_file_streams(), build_frame_code(), caca_write_header(), clean_index(), clear_index_entries(), close_connection(), close_input_file(), concat_read_header(), copy_metadata(), create_stream(), decode_info_header(), dv_init_mux(), dv_write_header(), estimate_timings(), estimate_timings_from_bit_rate(), estimate_timings_from_pts(), export_orphan_timecode(), extract_mpeg4_header(), ff_audio_interleave_close(), ff_audio_interleave_init(), ff_audio_rechunk_interleave(), ff_find_stream_index(), ff_framehash_write_header(), ff_free_stream(), ff_gen_syncpoint_search(), ff_interleave_packet_per_dts(), ff_metadata_conv_ctx(), ff_mov_read_esds(), ff_mov_read_stsd_entries(), ff_nut_reset_ts(), ff_program_add_stream_index(), ff_rdt_parse_open(), ff_read_frame_flush(), ff_read_packet(), ff_rtsp_setup_output_streams(), ff_spdif_read_packet(), ff_store_parser_state(), ff_update_cur_dts(), ffm_close(), ffm_read_packet(), ffm_write_header(), fill_all_stream_timings(), film_read_header(), finalize_packet(), find_and_decode_index(), find_stream(), flac_write_header(), flv_data_packet(), flv_read_metabody(), flv_read_packet(), flv_write_header(), flv_write_trailer(), get_sindex(), get_sockaddr(), get_subtitle_pkt(), get_system_header_size(), gif_write_header(), guess_ni_flag(), gxf_header(), gxf_write_header(), gxf_write_track_description_section(), gxf_write_umf_media_description(), gxf_write_umf_payload(), gxf_write_umf_track_description(), handle_file(), has_duration(), hls_mux_init(), hls_read_header(), hls_write_header(), http_prepare_data(), http_receive_data(), ico_write_header(), ilbc_write_header(), init_input_filter(), init_muxer(), init_pts(), ircam_write_header(), ism_flush(), ism_free(), ism_write_header(), ivf_write_header(), lavfi_read_header(), lavfi_read_packet(), libquvi_read_header(), main(), microdvd_write_header(), mkv_write_attachments(), mkv_write_header(), mkv_write_tags(), mkv_write_tracks(), mkv_write_trailer(), mov_find_next_sample(), mov_read_chan(), mov_read_chapters(), mov_read_close(), mov_read_ctts(), mov_read_custom_metadata(), mov_read_dac3(), mov_read_dec3(), mov_read_dref(), mov_read_dvc1(), mov_read_elst(), mov_read_enda(), mov_read_extradata(), mov_read_fiel(), mov_read_glbl(), mov_read_hdlr(), mov_read_header(), mov_read_mdhd(), mov_read_pasp(), mov_read_sbgp(), mov_read_seek(), mov_read_stco(), mov_read_stps(), mov_read_strf(), mov_read_stsc(), mov_read_stss(), mov_read_stsz(), mov_read_stts(), mov_read_tkhd(), mov_read_tmcd(), mov_read_trak(), mov_read_trun(), mov_read_wave(), mov_read_wfex(), mov_write_ftyp_tag(), mov_write_header(), mov_write_moov_tag(), mov_write_single_packet(), mov_write_udta_tag(), movie_common_init(), mpc8_parse_seektable(), mpeg_mux_end(), mpeg_mux_init(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_write_end(), mpegts_write_flush(), mpegts_write_header(), mpegts_write_packet_internal(), mpegts_write_pmt(), mv_read_packet(), mv_read_seek(), mxf_compute_index_tables(), mxf_free(), mxf_get_stream_index(), mxf_handle_small_eubc(), mxf_interleave_get_packet(), mxf_parse_dnxhd_frame(), mxf_parse_dv_frame(), mxf_read_close(), mxf_read_seek(), mxf_write_header(), mxf_write_index_table_segment(), mxf_write_multi_descriptor(), mxf_write_package(), mxf_write_partition(), need_output(), new_output_stream(), nsv_parse_NSVs_header(), nsv_read_chunk(), nsv_read_close(), nsv_read_header(), nut_read_header(), nut_write_header(), nut_write_packet(), nut_write_trailer(), ogg_write_header(), ogg_write_trailer(), open_input_file(), open_output_file(), open_slave(), output_packet(), pmt_cb(), prepare_sdp_description(), probe_file(), process_input(), put_system_header(), qt_rtp_parse_packet(), query_codec(), r3d_read_packet(), rdt_parse_sdp_line(), read_braindead_odml_indx(), read_data(), read_ffserver_streams(), read_frame_internal(), read_header(), read_packets(), read_seek(), read_thread(), real_seek(), recheck_discard_flags(), remove_decoded_packets(), rl2_read_packet(), rl2_read_seek(), rm_read_close(), rm_read_index(), rm_write_header(), rm_write_trailer(), rpl_read_packet(), rtp_new_av_stream(), rtp_write_header(), rtsp_read_header(), rtsp_read_packet(), rv10_write_header(), sap_fetch_packet(), sap_read_header(), sap_write_close(), sap_write_header(), sdl_write_header(), search_hi_lo_keyframes(), segment_mux_init(), select_reference_stream(), set_disposition_bits(), setup_find_stream_info_opts(), show_format(), show_streams(), smjpeg_write_header(), srt_write_header(), stream_component_close(), stream_component_open(), stream_cycle_channel(), sub2video_prepare(), swf_read_packet(), swf_write_header(), swf_write_trailer(), sync(), tee_write_packet(), tmcd_is_referenced(), transcode_init(), try_seek(), update_stream_timings(), update_wrap_reference(), voc_write_header(), write_header(), write_headers(), write_index(), write_mainheader(), write_manifest(), write_trailer(), and xmv_process_packet_header().

struct AVOutputFormat* AVFormatContext::oformat

Definition at line 958 of file avformat.h.

Referenced by add_stream(), av_dump_format(), av_get_output_timestamp(), av_interleaved_write_frame(), av_write_frame(), av_write_trailer(), avformat_alloc_output_context2(), avformat_write_header(), choose_encoder(), close_connection(), compute_pkt_fields2(), do_streamcopy(), do_video_out(), dump_stream_format(), exit_program(), ff_rtp_chain_mux_open(), ff_rtp_get_payload_type(), ff_rtsp_open_transport_ctx(), ff_rtsp_undo_setup(), filter_codec_opts(), flush_encoders(), format_child_next(), format_to_name(), hls_mux_init(), hls_start(), http_prepare_data(), init_muxer(), interleave_packet(), ism_write_header(), main(), mkv_write_header(), mov_write_header(), mpeg_mux_init(), mpegts_write_header(), mxf_parse_mpeg2_frame(), mxf_write_header(), mxf_write_packet(), new_output_stream(), open_output_file(), open_slave(), prepare_sdp_description(), rtp_new_av_stream(), segment_mux_init(), segment_start(), split_write_packet(), swf_write_header(), tee_write_trailer(), transcode_init(), validate_codec_tag(), write_frame(), write_header(), and write_video_frame().

struct AVPacketList* AVFormatContext::packet_buffer

This buffer is only needed when packets were already buffered but not decoded, for example to get the codec parameters in MPEG streams.

Definition at line 1238 of file avformat.h.

Referenced by av_read_frame(), avformat_find_stream_info(), compute_pkt_fields(), ff_interleave_add_packet(), ff_interleave_packet_per_dts(), ff_restore_parser_state(), ff_store_parser_state(), flush_packet_queue(), get_next_pkt(), mxf_interleave_get_packet(), update_initial_durations(), and update_initial_timestamps().

struct AVPacketList* AVFormatContext::packet_buffer_end

Definition at line 1239 of file avformat.h.

Referenced by av_read_frame(), avformat_find_stream_info(), ff_interleave_add_packet(), ff_interleave_packet_per_dts(), flush_packet_queue(), and mxf_interleave_get_packet().

unsigned int AVFormatContext::packet_size

Definition at line 1018 of file avformat.h.

Referenced by asf_build_simple_index(), asf_read_file_properties(), asf_read_pts(), asf_read_seek(), asf_write_header(), asf_write_header1(), ff_asf_get_packet(), ff_asf_parse_packet(), flush_packet(), mpeg_mux_init(), qcp_read_header(), qcp_read_packet(), and rtp_write_header().

struct AVPacketList* AVFormatContext::parse_queue

Packets split by the parser get queued here.

Definition at line 1255 of file avformat.h.

Referenced by compute_pkt_fields(), ff_restore_parser_state(), ff_store_parser_state(), flush_packet_queue(), parse_packet(), read_frame_internal(), update_initial_durations(), and update_initial_timestamps().

struct AVPacketList* AVFormatContext::parse_queue_end

Definition at line 1256 of file avformat.h.

Referenced by flush_packet_queue(), get_next_pkt(), parse_packet(), and read_frame_internal().

AVIOContext* AVFormatContext::pb

I/O context.

decoding: either set by the user before avformat_open_input() (then the user must close it manually) or set by avformat_open_input(). encoding: set by the user.

Do NOT set this field if AVFMT_NOFILE flag is set in iformat/oformat.flags. In such a case, the (de)muxer will handle I/O in some other way and this field will be NULL.

Definition at line 977 of file avformat.h.

Referenced by a64_write_header(), add_metadata(), adjust_write_index(), adts_write_packet(), adx_read_header(), adx_read_packet(), aea_read_header(), aea_read_packet(), afc_read_header(), afc_read_packet(), aiff_read_header(), aiff_read_packet(), aiff_write_header(), aiff_write_packet(), aiff_write_trailer(), amf_parse_object(), amr_read_header(), amr_read_packet(), apc_read_header(), apc_read_packet(), ape_read_header(), ape_read_packet(), ape_read_seek(), ape_tag_read_field(), aqt_read_header(), asf_build_simple_index(), asf_read_content_desc(), asf_read_ext_content_desc(), asf_read_ext_stream_properties(), asf_read_file_properties(), asf_read_header(), asf_read_language_list(), asf_read_marker(), asf_read_metadata(), asf_read_packet(), asf_read_picture(), asf_read_pts(), asf_read_seek(), asf_read_stream_properties(), asf_write_header(), asf_write_header1(), asf_write_index(), asf_write_trailer(), asfrtp_parse_packet(), ass_read_header(), ast_read_header(), ast_read_packet(), ast_write_header(), ast_write_packet(), ast_write_trailer(), av_demuxer_open(), av_interleaved_write_frame(), av_read_pause(), av_read_play(), av_write_frame(), av_write_trailer(), avformat_close_input(), avformat_find_stream_info(), avformat_open_input(), avformat_write_header(), avi_load_index(), avi_read_close(), avi_read_header(), avi_read_idx1(), avi_read_nikon(), avi_read_packet(), avi_read_seek(), avi_read_tag(), avi_sync(), avi_write_counters(), avi_write_header(), avi_write_idx1(), avi_write_ix(), avi_write_packet(), avi_write_trailer(), avr_read_header(), avs_read_audio_packet(), avs_read_header(), avs_read_packet(), avs_read_video_packet(), bfi_read_header(), bfi_read_packet(), bmv_read_packet(), build_feed_streams(), caf_write_header(), caf_write_packet(), caf_write_trailer(), cdata_read_header(), cdata_read_packet(), cdxl_read_packet(), check(), cin_read_header(), cin_read_packet(), close_connection(), close_slaves(), concat_read_header(), crc_write_trailer(), daud_packet(), daud_write_packet(), decode_frame(), decode_frame_header(), decode_info_header(), decode_main_header(), decode_stream_header(), decode_syncpoint(), dfa_read_header(), dfa_read_packet(), dtshd_read_header(), dv_frame_offset(), dv_read_header(), dv_read_packet(), dv_read_seek(), dv_read_timecode(), dv_write_packet(), dxa_read_header(), dxa_read_packet(), ea_read_packet(), ebml_level_end(), ebml_parse(), ebml_parse_elem(), ebml_read_master(), efi_read(), epaf_read_header(), estimate_timings(), estimate_timings_from_bit_rate(), estimate_timings_from_pts(), event_loop(), exit_program(), ff_ape_parse_tag(), ff_ape_write(), ff_framehash_write_header(), ff_gen_search(), ff_gen_syncpoint_search(), ff_id3v1_read(), ff_id3v2_parse(), ff_id3v2_read(), ff_id3v2_write_apic(), ff_id3v2_write_metadata(), ff_id3v2_write_simple(), ff_mov_add_hinted_packet(), ff_mov_close_hinting(), ff_mov_write_packet(), ff_pcm_read_packet(), ff_pcm_read_seek(), ff_raw_read_partial_packet(), ff_raw_write_packet(), ff_restore_parser_state(), ff_rtp_chain_mux_open(), ff_rtp_send_data(), ff_rtsp_open_transport_ctx(), ff_rtsp_undo_setup(), ff_sauce_read(), ff_seek_frame_binary(), ff_spdif_read_packet(), ff_store_parser_state(), ff_voc_get_packet(), ff_wms_parse_sdp_a_line(), ffm2_read_header(), ffm_is_avail_data(), ffm_read_data(), ffm_read_header(), ffm_read_packet(), ffm_resync(), ffm_seek1(), ffm_write_header(), film_read_header(), film_read_packet(), find_and_decode_index(), finish_chunk_noindex(), finish_file(), flac_read_header(), flac_write_header(), flac_write_packet(), flac_write_trailer(), flic_read_header(), flic_read_packet(), flush_packet(), flv_data_packet(), flv_get_extradata(), flv_read_header(), flv_read_metabody(), flv_read_packet(), flv_read_seek(), flv_set_video_codec(), flv_write_header(), flv_write_packet(), flv_write_trailer(), format_child_next(), fourxm_read_header(), fourxm_read_packet(), framecrc_write_packet(), free_variant_list(), frm_read_header(), frm_read_packet(), g723_1_read_packet(), g729_read_packet(), get_aiff_header(), get_dts(), get_meta(), get_metadata(), get_packet_header(), get_tag(), gif_read_ext(), gif_read_header(), gif_read_packet(), gif_write_header(), gif_write_trailer(), gsm_read_packet(), guess_ni_flag(), gxf_header(), gxf_packet(), gxf_read_index(), gxf_read_timestamp(), gxf_resync_media(), gxf_seek(), gxf_write_flt_packet(), gxf_write_header(), gxf_write_map_packet(), gxf_write_material_data_section(), gxf_write_media_preamble(), gxf_write_packet(), gxf_write_track_description(), gxf_write_track_description_section(), gxf_write_trailer(), gxf_write_umf_material_description(), gxf_write_umf_media_description(), gxf_write_umf_packet(), gxf_write_umf_payload(), gxf_write_umf_track_description(), handle_packet(), handle_packets(), hls_read_header(), hls_start(), hls_write_packet(), hls_write_trailer(), http_prepare_data(), http_receive_data(), ico_write_header(), ico_write_packet(), ico_write_trailer(), idcin_read_header(), idcin_read_packet(), idcin_read_seek(), iff_read_header(), iff_read_packet(), ilbc_read_header(), ilbc_read_packet(), ilbc_write_header(), ilbc_write_packet(), img_read_packet(), ingenient_read_packet(), init_input(), init_stream(), ipmovie_read_header(), ipmovie_read_packet(), ircam_read_header(), ircam_write_header(), is_realtime(), ism_flush(), ism_free(), ism_write_header(), iss_read_header(), iss_read_packet(), ivf_write_header(), ivf_write_packet(), jacosub_read_header(), jacosub_write_header(), latm_write_packet(), lmlm4_read_packet(), lvf_read_header(), lvf_read_packet(), lxf_read_header(), lxf_read_packet(), main(), matroska_execute_seekhead(), matroska_parse_cluster(), matroska_parse_cluster_incremental(), matroska_parse_seekhead_entry(), matroska_read_header(), matroska_read_packet(), matroska_read_seek(), matroska_resync(), md5_finish(), microdvd_read_header(), microdvd_write_header(), microdvd_write_packet(), mkv_flush_dynbuf(), mkv_write_attachments(), mkv_write_chapters(), mkv_write_header(), mkv_write_packet(), mkv_write_packet_internal(), mkv_write_tag(), mkv_write_tags(), mkv_write_tracks(), mkv_write_trailer(), mmf_rate(), mmf_read_header(), mmf_read_packet(), modplug_read_header(), mov_find_next_sample(), mov_flush_fragment(), mov_read_header(), mov_read_packet(), mov_read_timecode_track(), mov_read_trak(), mov_write_header(), mov_write_trailer(), mp3_parse_vbr_tags(), mp3_queue_flush(), mp3_read_header(), mp3_read_packet(), mp3_seek(), mp3_update_xing(), mp3_write_trailer(), mp3_write_xing(), mpc8_handle_chunk(), mpc8_parse_seektable(), mpc8_read_header(), mpc8_read_packet(), mpc8_read_seek(), mpc_read_header(), mpc_read_packet(), mpegps_read_dts(), mpegps_read_header(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_get_dts(), mpegts_get_pcr(), mpegts_insert_null_packet(), mpegts_insert_pcr_only(), mpegts_prefix_m2ts_header(), mpegts_raw_read_packet(), mpegts_read_header(), mpegts_resync(), mpegts_write_flush(), mpegts_write_header(), mpegts_write_packet_internal(), mpegts_write_pes(), mpjpeg_write_header(), mpjpeg_write_packet(), mpl2_read_header(), mpsub_read_header(), msnwc_tcp_read_header(), msnwc_tcp_read_packet(), mtv_read_header(), mtv_read_packet(), mv_read_header(), mv_read_packet(), mv_read_seek(), mxf_decrypt_triplet(), mxf_parse_handle_essence(), mxf_read_header(), mxf_read_local_tags(), mxf_read_packet(), mxf_read_packet_old(), mxf_read_seek(), mxf_seek_to_previous_partition(), mxf_write_cdci_common(), mxf_write_common_fields(), mxf_write_content_storage(), mxf_write_d10_audio_packet(), mxf_write_d10_video_packet(), mxf_write_essence_container_data(), mxf_write_essence_container_refs(), mxf_write_footer(), mxf_write_generic_desc(), mxf_write_generic_sound_common(), mxf_write_identification(), mxf_write_index_table_segment(), mxf_write_klv_fill(), mxf_write_mpegvideo_desc(), mxf_write_multi_descriptor(), mxf_write_package(), mxf_write_packet(), mxf_write_partition(), mxf_write_preface(), mxf_write_primer_pack(), mxf_write_random_index_pack(), mxf_write_sequence(), mxf_write_structural_component(), mxf_write_system_item(), mxf_write_timecode_component(), mxf_write_track(), mxf_write_umid(), mxf_write_wav_common(), mxg_read_packet(), mxg_update_cache(), nc_read_packet(), need_output(), nist_read_header(), nsv_parse_NSVf_header(), nsv_parse_NSVs_header(), nsv_read_chunk(), nsv_read_seek(), nsv_resync(), nut_read_header(), nut_read_packet(), nut_read_timestamp(), nut_write_header(), nut_write_packet(), nut_write_trailer(), nuv_header(), nuv_packet(), nuv_read_dts(), nuv_resync(), ogg_get_length(), ogg_read_page(), ogg_read_timestamp(), ogg_replace_stream(), ogg_reset(), ogg_restore(), ogg_save(), ogg_write_page(), oma_read_header(), oma_read_packet(), oma_read_seek(), oma_write_header(), open_input_stream(), open_output_file(), open_slave(), parse_audio_var(), parse_global_var(), parse_video_var(), pjs_read_header(), pmp_header(), pmp_packet(), print_report(), process_audio_header_eacs(), process_audio_header_elements(), process_audio_header_sead(), process_ea_header(), process_video_header_cmv(), process_video_header_mdec(), process_video_header_vp6(), put_chunk(), put_id3v2_tags(), put_meta(), put_payload_parsing_info(), put_swf_end_tag(), put_swf_tag(), put_vcd_padding_sector(), pva_read_packet(), pva_read_timestamp(), pvf_read_header(), qcp_read_header(), qcp_read_packet(), query_codec(), r3d_read_header(), r3d_read_packet(), r3d_read_rdvo(), r3d_read_red1(), r3d_read_reda(), r3d_read_redv(), r3d_read_reos(), r3d_seek(), raw_read_packet(), rawvideo_read_packet(), rdt_parse_packet(), read_atom(), read_braindead_odml_indx(), read_chapter(), read_desc_chunk(), read_gab2_sub(), read_header(), read_info_chunk(), read_kuki_chunk(), read_packet(), read_pakt_chunk(), read_part_of_packet(), read_seek(), read_table(), read_thread(), read_xing_toc(), realtext_read_header(), rl2_read_header(), rl2_read_packet(), rm_read_dts(), rm_read_header(), rm_read_header_old(), rm_read_index(), rm_read_metadata(), rm_read_packet(), rm_write_audio(), rm_write_header(), rm_write_trailer(), rm_write_video(), roq_read_header(), roq_read_packet(), roq_write_header(), rpl_read_header(), rpl_read_packet(), rso_read_header(), rso_write_header(), rso_write_packet(), rso_write_trailer(), rtcp_send_sr(), rtp_new_av_stream(), rtp_write_header(), rv10_write_header(), sami_read_header(), sap_read_header(), sap_write_close(), sbg_read_header(), section_write_packet(), seek_frame_byte(), seek_frame_generic(), seg_write_header(), seg_write_trailer(), segment_end(), segment_start(), seq_read_header(), seq_read_packet(), shift_data(), show_format(), siff_read_header(), siff_read_packet(), smacker_read_header(), smacker_read_packet(), smjpeg_read_header(), smjpeg_read_packet(), smjpeg_write_header(), smjpeg_write_packet(), smjpeg_write_trailer(), smush_read_header(), smush_read_packet(), sol_read_header(), sol_read_packet(), sox_read_header(), sox_write_header(), sox_write_trailer(), spdif_write_packet(), split_write_packet(), srt_read_header(), srt_write_packet(), str_read_header(), str_read_packet(), subviewer1_read_header(), subviewer_read_header(), swf_probe(), swf_read_header(), swf_read_packet(), swf_write_header(), swf_write_trailer(), swf_write_video(), sync(), tak_read_header(), tcp_write_packet(), tedcaptions_read_header(), tee_write_trailer(), thp_read_header(), thp_read_packet(), tmv_read_header(), tmv_read_packet(), tmv_read_seek(), tta_read_header(), tta_read_packet(), tta_read_seek(), txd_read_packet(), update_stream_timings(), var_read_metadata(), vc1t_read_header(), vc1t_read_packet(), vc1test_write_header(), vc1test_write_packet(), vc1test_write_trailer(), vid_read_header(), vid_read_packet(), vivo_get_packet_header(), vivo_read_header(), vivo_read_packet(), vmd_read_header(), vmd_read_packet(), voc_read_header(), voc_write_header(), voc_write_packet(), voc_write_trailer(), vplayer_read_header(), vqf_read_header(), vqf_read_packet(), vqf_read_seek(), wc3_read_header(), wc3_read_packet(), webvtt_read_header(), write_chunk_header(), write_chunk_header2(), write_fat_sector(), write_header(), write_index(), write_packet(), write_packet_header(), write_root_table(), write_stream_codec(), write_stream_codec_info(), write_stream_data(), write_sync(), write_table_entries_attrib(), write_table_entries_events(), write_table_entries_time(), write_table_redirector_legacy_attrib(), write_timestamp(), write_trailer(), wsaud_read_header(), wsaud_read_packet(), wsvqa_read_header(), wsvqa_read_packet(), wtvfile_open_sector(), wv_read_header(), wv_read_packet(), wv_read_seek(), xa_read_header(), xa_read_packet(), xmv_fetch_audio_packet(), xmv_fetch_new_packet(), xmv_fetch_video_packet(), xmv_process_packet_header(), xmv_read_header(), xwma_read_header(), xwma_read_packet(), yop_read_header(), yop_read_packet(), yop_read_seek(), yuv4_read_header(), and yuv4_read_packet().