AVFormatContext Struct Reference

Format I/O context. More...

#include <avformat.h>

Data Fields
const AVClass *	av_class
	A class for logging and AVOptions. More...
struct AVInputFormat *	iformat
	The input container format. More...
struct AVOutputFormat *	oformat
	The output container format. More...
void *	priv_data
	Format private data. More...
AVIOContext *	pb
	I/O context. More...
int	ctx_flags
	Flags signalling stream properties. More...
unsigned int	nb_streams
	Number of elements in AVFormatContext.streams. More...
AVStream **	streams
	A list of all streams in the file. More...
char *	url
	input or output URL. More...
int64_t	start_time
	Position of the first frame of the component, in AV_TIME_BASE fractional seconds. More...
int64_t	duration
	Duration of the stream, in AV_TIME_BASE fractional seconds. More...
int64_t	bit_rate
	Total stream bitrate in bit/s, 0 if not available. More...
unsigned int	packet_size
int	max_delay
int	flags
	Flags modifying the (de)muxer behaviour. More...
int64_t	probesize
	Maximum size of the data read from input for determining the input container format. More...
int64_t	max_analyze_duration
	Maximum duration (in AV_TIME_BASE units) of the data read from input 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
	Number of chapters in AVChapter array. More...
AVChapter **	chapters
AVDictionary *	metadata
	Metadata that applies to the whole file. More...
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
	The number of frames used for determining the framerate in avformat_find_stream_info(). 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...
int64_t	max_interleave_delta
	Maximum buffering duration for interleaving. More...
int	strict_std_compliance
	Allow non-standard and experimental extension. More...
int	event_flags
	Flags for the user to detect events happening on the file. More...
int	max_ts_probe
	Maximum number of packets to read while waiting for the first timestamp. More...
int	avoid_negative_ts
	Avoid negative timestamps during muxing. 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	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...
int64_t	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...
int	probe_score
	format probing score. More...
int	format_probesize
	number of bytes to read maximally to identify format. More...
char *	codec_whitelist
	',' separated list of allowed decoders. More...
char *	format_whitelist
	',' separated list of allowed demuxers. More...
AVFormatInternal *	internal
	An opaque field for libavformat internal usage. More...
int	io_repositioned
	IO repositioned flag. More...
AVCodec *	video_codec
	Forced video codec. More...
AVCodec *	audio_codec
	Forced audio codec. More...
AVCodec *	subtitle_codec
	Forced subtitle codec. More...
AVCodec *	data_codec
	Forced data codec. More...
int	metadata_header_padding
	Number of bytes to be written as padding in a metadata header. More...
void *	opaque
	User data. More...
av_format_control_message	control_message_cb
	Callback used by devices to communicate with application. More...
int64_t	output_ts_offset
	Output timestamp offset, in microseconds. More...
uint8_t *	dump_separator
	dump format separator. More...
enum AVCodecID	data_codec_id
	Forced Data codec_id. More...
char *	protocol_whitelist
	',' separated list of allowed protocols. More...
int(*	io_open )(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
	A callback for opening new IO streams. More...
void(*	io_close )(struct AVFormatContext *s, AVIOContext *pb)
	A callback for closing the streams opened with AVFormatContext.io_open(). More...
char *	protocol_blacklist
	',' separated list of disallowed protocols. More...
int	max_streams
	The maximum number of streams. More...
int	skip_estimate_duration_from_pts
	Skip duration calcuation in estimate_timings_from_pts. 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.

Fields can be accessed through AVOptions (av_opt*), the name string used matches the associated command line parameter name and can be found in libavformat/options_table.h. The AVOption/command line parameter names differ in some cases from the C structure field names for historic reasons or brevity.

Examples:

avio_reading.c, demuxing_decoding.c, filtering_audio.c, filtering_video.c, hw_decode.c, metadata.c, muxing.c, qsvdec.c, remuxing.c, transcode_aac.c, transcoding.c, and vaapi_transcode.c.

Definition at line 1351 of file avformat.h.

Field Documentation

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 1356 of file avformat.h.

Referenced by av_hwframe_ctx_alloc(), avformat_get_context_defaults(), and avformat_open_input().

struct AVInputFormat* AVFormatContext::iformat

The input container format.

Demuxing only, set by avformat_open_input().

Definition at line 1363 of file avformat.h.

Referenced by adts_aac_read_header(), adx_read_header(), assert_file_overwrite(), av_demuxer_open(), av_dump_format(), av_read_frame(), av_read_pause(), av_read_play(), av_seek_frame(), avdevice_capabilities_create(), avdevice_capabilities_free(), avdevice_list_devices(), avformat_close_input(), avformat_find_stream_info(), avformat_free_context(), avformat_new_stream(), avformat_open_input(), avformat_seek_file(), compute_pkt_fields(), dump_stream_format(), estimate_timings(), ff_alloc_input_device_context(), ff_compute_frame_duration(), ff_img_read_header(), ff_raw_audio_read_header(), ff_raw_data_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(), g726_read_header(), get_category(), gsm_read_header(), init_input(), io_open_default(), is_realtime(), loas_read_header(), mpegts_read_header(), open_input_file(), pcm_read_header(), process_input(), rawvideo_read_header(), read_frame_internal(), read_header(), read_thread(), seek_frame_generic(), seek_frame_internal(), ser_read_header(), show_format(), show_stream(), stream_component_open(), v210_read_header(), and wsd_read_header().

struct AVOutputFormat* AVFormatContext::oformat

The output container format.

Muxing only, must be set by the caller before avformat_write_header().

Examples:

muxing.c, and transcoding.c.

Definition at line 1370 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(), av_write_uncoded_frame_internal(), av_write_uncoded_frame_query(), avdevice_app_to_dev_control_message(), avdevice_capabilities_create(), avdevice_capabilities_free(), avdevice_list_devices(), avformat_alloc_output_context2(), avformat_free_context(), avformat_init_output(), avformat_write_header(), choose_encoder(), chunk_end(), chunk_mux_init(), dash_check_bitstream(), dash_init(), do_packet_auto_bsf(), do_video_out(), dump_stream_format(), ff_format_output_open(), ff_rtp_chain_mux_open(), ff_rtp_get_payload_type(), ff_rtsp_open_transport_ctx(), ff_rtsp_undo_setup(), ffmpeg_cleanup(), filter_codec_opts(), flush_if_needed(), force_one_stream(), format_child_next(), format_to_name(), hds_write_header(), hls_mux_init(), hls_start(), hls_write_packet(), init_fps(), init_muxer(), init_output_stream_encode(), init_output_stream_streamcopy(), init_pts(), interleave_packet(), io_open_default(), ism_write_header(), log_slave(), main(), mkv_write_header(), mov_find_codec_tag(), mov_init(), mpeg_mux_init(), mpegts_init(), mxf_compute_edit_unit_byte_count(), mxf_parse_mpeg2_frame(), mxf_write_cdci_common(), mxf_write_common_fields(), mxf_write_footer(), mxf_write_generic_desc(), mxf_write_generic_sound_common(), mxf_write_header(), mxf_write_identification(), mxf_write_packet(), mxf_write_partition(), mxf_write_preface(), mxf_write_random_index_pack(), mxf_write_track(), new_output_stream(), open_output_file(), prepare_input_packet(), print_sdp(), rtp_mpegts_write_header(), seg_check_bitstream(), seg_write_header(), segment_mux_init(), segment_start(), sup_write_header(), swf_write_header(), transcode_init(), validate_codec_tag(), webm_chunk_write_header(), webm_chunk_write_trailer(), write_header(), and write_packet().

void* AVFormatContext::priv_data

Format private data.

This is an AVOptions-enabled struct if and only if iformat/oformat.priv_class is not NULL.

• muxing: set by avformat_write_header()
• demuxing: set by avformat_open_input()

Definition at line 1379 of file avformat.h.

Referenced by aa_read_close(), aa_read_header(), aa_read_packet(), aa_read_seek(), adaptation_set_add_stream(), add_adaptation_set(), add_audio_device(), add_display_matrix(), add_file(), add_keyframes_index(), add_stream_to_programs(), add_video_device(), add_video_stream(), adts_init(), adts_write_header(), adts_write_packet(), adts_write_trailer(), adx_read_header(), adx_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_packet(), analyze_chunk(), android_camera_read_close(), android_camera_read_header(), android_camera_read_packet(), ape_read_close(), ape_read_header(), ape_read_packet(), ape_read_seek(), apng_read_header(), apng_read_packet(), apng_write_header(), apng_write_packet(), apng_write_trailer(), aptx_read_header_common(), aqt_read_close(), aqt_read_header(), aqt_read_packet(), aqt_read_seek(), asf_build_simple_index(), asf_deinterleave(), asf_get_packet(), asf_parse_packet(), asf_read_close(), asf_read_content_desc(), asf_read_data(), asf_read_ext_content(), asf_read_ext_content_desc(), asf_read_ext_stream_properties(), asf_read_file_properties(), asf_read_frame_header(), asf_read_header(), asf_read_language_list(), asf_read_marker(), asf_read_metadata(), asf_read_metadata_obj(), asf_read_multiple_payload(), asf_read_packet(), asf_read_packet_header(), asf_read_payload(), asf_read_picture(), asf_read_properties(), asf_read_pts(), asf_read_replicated_data(), asf_read_seek(), asf_read_simple_index(), asf_read_single_payload(), asf_read_stream_properties(), asf_read_subpayload(), asf_read_timestamp(), asf_read_unknown(), asf_reset_header(), asf_store_aspect_ratio(), asf_write_header(), asf_write_header1(), asf_write_markers(), asf_write_packet(), asf_write_stream_header(), asf_write_trailer(), asfrtp_parse_packet(), asfrtp_parse_sdp_line(), ass_read_close(), ass_read_header(), ass_read_packet(), ass_read_seek(), ast_write_header(), ast_write_packet(), ast_write_trailer(), audio_get_output_timestamp(), audio_read_close(), audio_read_header(), audio_read_packet(), audio_write_frame(), audio_write_header(), audio_write_packet(), audio_write_trailer(), av_write_trailer(), avdevice_capabilities_create(), avf_close(), avf_read_header(), avf_read_packet(), avformat_alloc_output_context2(), avformat_find_stream_info(), avformat_free_context(), avformat_open_input(), avi_add_ientry(), avi_init(), avi_load_index(), 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_packet_internal(), avi_write_trailer(), avisynth_context_create(), avisynth_create_stream(), avisynth_create_stream_audio(), avisynth_create_stream_video(), avisynth_next_stream(), avisynth_open_file(), avisynth_read_close(), avisynth_read_packet(), avisynth_read_packet_audio(), avisynth_read_packet_video(), avisynth_read_seek(), avpacket_queue_init(), avs_read_audio_packet(), avs_read_header(), avs_read_packet(), avs_read_video_packet(), bfi_read_header(), bfi_read_packet(), bmv_read_close(), bmv_read_header(), bmv_read_packet(), build_elision_headers(), build_frame_code(), caca_write_header(), caca_write_packet(), caca_write_trailer(), caf_write_header(), caf_write_packet(), caf_write_trailer(), calc_cur_seg_no(), calc_min_seg_no(), calculate_bitrate(), callback(), camera_dev_disconnected(), camera_dev_error(), cdata_read_header(), cdata_read_packet(), cdef_params(), cdxl_read_header(), cdxl_read_packet(), celt_header(), check_pkt(), check_sessionid(), check_sync_pes(), chunk_end(), chunk_mux_init(), chunk_start(), cin_read_header(), cin_read_packet(), cine_read_packet(), cine_read_seek(), close_slaves(), codec2_read_packet(), codec2raw_read_header(), color_config(), compute_display_area(), compute_moov_size(), compute_sidx_size(), compute_texture_rect(), concat_read_close(), concat_read_header(), concat_read_packet(), concat_seek(), configure_video_device(), convert_timestamp(), copy_cvpixelbuffer(), crc_write_header(), crc_write_packet(), crc_write_trailer(), create_capture_session(), create_image_reader(), create_master_playlist(), create_stream(), create_subcc_packet(), create_subcc_streams(), daala_gptopts(), daala_header(), daala_packet(), dash_check_bitstream(), dash_close(), dash_flush(), dash_free(), dash_init(), dash_read_header(), dash_read_packet(), dash_read_seek(), dash_write_header(), dash_write_packet(), dash_write_trailer(), dashenc_delete_file(), dashenc_io_close(), dashenc_io_open(), dc1394_close(), dc1394_read_common(), dc1394_read_header(), dc1394_read_packet(), dec_ref_pic_marking(), decklink_input_callback::decklink_input_callback(), decklink_select_input(), decklink_setup_audio(), decklink_setup_video(), decklink_write_audio_packet(), decklink_write_video_packet(), decrypt_init(), demux_audio(), demux_video(), detect_stream_specific(), detect_unknown_subobject(), device_init(), device_open(), dirac_gptopts(), dirac_header(), do_encrypt(), draw_rectangle(), dsf_read_header(), dsf_read_packet(), dshow_add_device(), dshow_cycle_devices(), dshow_cycle_formats(), dshow_cycle_pins(), dshow_list_device_options(), dshow_open_device(), dshow_read_close(), dshow_read_header(), dshow_read_packet(), dshow_set_audio_buffer_size(), dshow_try_setup_crossbar_options(), dss_723_1_read_packet(), dss_read_close(), dss_read_header(), dss_read_packet(), dss_read_seek(), dss_skip_audio_header(), dss_sp_read_packet(), dtshd_read_header(), dv_init_mux(), dv_read_close(), dv_read_header(), dv_read_packet(), dv_read_seek(), dv_read_timecode(), dv_write_header(), dv_write_packet(), dv_write_trailer(), dxa_read_header(), dxa_read_packet(), ea_read_header(), ea_read_packet(), efi_read(), enable_tracks(), failing_deinit(), failing_write_header(), failing_write_packet(), failing_write_trailer(), fbdev_read_close(), fbdev_read_header(), fbdev_read_packet(), fbdev_write_header(), fbdev_write_packet(), fbdev_write_trailer(), ff_alloc_input_device_context(), ff_alsa_close(), ff_alsa_xrun_recover(), ff_decklink_cleanup(), ff_decklink_init_device(), ff_decklink_list_formats(), ff_decklink_read_close(), ff_decklink_read_header(), ff_decklink_read_packet(), ff_decklink_set_configs(), ff_decklink_set_format(), ff_decklink_write_header(), ff_decklink_write_packet(), ff_decklink_write_trailer(), ff_img_read_header(), ff_img_read_packet(), ff_mov_add_hinted_packet(), ff_mov_init_hinting(), ff_mov_write_packet(), ff_oss_audio_open(), ff_raw_video_read_header(), ff_rm_parse_packet(), ff_rm_retrieve_cache(), ff_rtp_get_payload_type(), ff_rtp_send_aac(), ff_rtp_send_amr(), ff_rtp_send_data(), ff_rtp_send_h261(), ff_rtp_send_h263(), ff_rtp_send_h263_rfc2190(), ff_rtp_send_h264_hevc(), ff_rtp_send_jpeg(), ff_rtp_send_latm(), ff_rtp_send_mpegvideo(), ff_rtp_send_vp8(), ff_rtp_send_vp9(), ff_rtp_send_xiph(), ff_rtsp_close_streams(), ff_rtsp_open_transport_ctx(), ff_rtsp_parse_streaming_commands(), ff_rtsp_setup_input_streams(), ff_rtsp_setup_output_streams(), ff_rtsp_tcp_read_packet(), ff_rtsp_tcp_write_packet(), ff_rtsp_undo_setup(), ff_sndio_open(), ff_voc_get_packet(), ff_wms_parse_sdp_a_line(), fifo_consumer_thread(), fifo_deinit(), fifo_init(), fifo_mux_init(), fifo_thread_attempt_recovery(), fifo_thread_flush_output(), fifo_thread_process_recovery_failure(), fifo_thread_recover(), fifo_thread_write_header(), fifo_thread_write_packet(), fifo_thread_write_trailer(), fifo_write_header(), fifo_write_packet(), fifo_write_trailer(), film_grain_params(), film_init(), film_read_close(), film_read_header(), film_read_packet(), film_read_seek(), film_write_header(), film_write_packet(), find_header_idx(), find_stream(), finish_chunk(), finish_chunk_noindex(), finish_file(), fits_read_header(), fits_read_packet(), fits_write_header(), flac_header(), flac_init(), flac_queue_flush(), flac_read_header(), flac_seek(), flac_write_audio_packet(), flac_write_header(), flac_write_packet(), flac_write_picture(), flac_write_trailer(), flic_read_header(), flic_read_packet(), flush(), flush_buffered(), flush_init_segment(), flush_packet(), flv_read_close(), flv_read_header(), flv_read_metabody(), flv_read_packet(), flv_read_seek(), flv_write_codec_header(), flv_write_header(), flv_write_packet(), flv_write_trailer(), format_child_next(), fourxm_read_close(), fourxm_read_header(), fourxm_read_packet(), frame_header_obu(), frame_size(), frame_size_with_refs(), free_adaptation_sets(), free_stream(), frm_read_packet(), g726_read_header(), g729_read_header(), gdigrab_read_close(), gdigrab_read_header(), gdigrab_read_packet(), gdv_read_header(), gdv_read_packet(), genh_read_header(), genh_read_packet(), get_aiff_header(), get_audio_config(), get_chunk(), get_chunk_filename(), get_cue_desc(), get_current_fragment(), get_default_pattern_localtime_fmt(), get_image_format(), get_metadata(), get_moov_size(), get_packet_header(), get_riff(), get_sensor_orientation(), get_sidx_size(), get_system_header_size(), get_tag(), get_vcd_padding_size(), get_video_config(), get_vs_prop_int(), gif_read_ext(), gif_read_header(), gif_read_packet(), gif_write_header(), gif_write_packet(), gif_write_trailer(), grab_read_close(), grab_read_header(), grab_read_packet(), gsm_read_header(), gxf_compare_field_nb(), gxf_header(), gxf_packet(), 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(), hds_flush(), hds_free(), hds_write_header(), hds_write_packet(), hds_write_trailer(), hls_close(), hls_encryption_start(), hls_init(), hls_mux_init(), hls_read_header(), hls_read_packet(), hls_read_seek(), hls_start(), hls_window(), hls_write_header(), hls_write_packet(), hls_write_trailer(), hlsenc_io_close(), hlsenc_io_open(), hnm_read_close(), hnm_read_header(), hnm_read_packet(), ico_read_close(), ico_write_header(), ico_write_packet(), ico_write_trailer(), idcin_read_header(), idcin_read_packet(), idcin_read_seek(), iec61883_close(), iec61883_read_header(), iec61883_read_packet(), iff_read_header(), iff_read_packet(), image_available(), img_read_close(), img_read_seek(), init_audio(), init_convert_timestamp(), init_muxer(), init_stream(), ipmovie_read_header(), ipmovie_read_packet(), ism_flush(), ism_free(), ism_write_header(), ism_write_packet(), ism_write_trailer(), iss_read_header(), iss_read_packet(), ivf_write_packet(), ivf_write_trailer(), ivr_read_packet(), jacosub_read_close(), jacosub_read_header(), jacosub_read_packet(), jacosub_read_seek(), kmsgrab_read_close(), kmsgrab_read_header(), kmsgrab_read_packet(), kset(), latm_write_frame_header(), latm_write_header(), latm_write_packet(), lavfi_read_close(), lavfi_read_header(), lavfi_read_packet(), libAVMemInputPin_Receive(), list_formats(), list_standards(), load_metadata(), loop_filter_params(), lr_params(), lrc_read_close(), lrc_read_header(), lrc_read_packet(), lrc_read_seek(), lxf_read_header(), lxf_read_packet(), match_framerate(), match_streams(), match_streams_exact_id(), match_streams_one_to_one(), match_video_size(), matroska_convert_tags(), matroska_parse_tracks(), matroska_read_close(), matroska_read_header(), matroska_read_packet(), matroska_read_seek(), microdvd_read_close(), microdvd_read_header(), microdvd_read_packet(), microdvd_read_seek(), mkv_check_new_extra_data(), mkv_start_new_cluster(), mkv_write_attachments(), mkv_write_block(), mkv_write_chapters(), mkv_write_cues(), mkv_write_flush_packet(), mkv_write_header(), mkv_write_packet(), mkv_write_packet_internal(), mkv_write_tag(), mkv_write_tag_targets(), mkv_write_tags(), mkv_write_tracks(), mkv_write_trailer(), mkv_write_vtt_blocks(), mmap_init(), mmap_read_frame(), mmap_start(), mmf_read_header(), mmf_read_packet(), modplug_load_metadata(), modplug_read_close(), modplug_read_header(), modplug_read_packet(), modplug_read_seek(), mov_auto_flush_fragment(), mov_create_chapter_track(), mov_create_timecode_track(), mov_flush_fragment(), mov_flush_fragment_interleaving(), mov_free(), mov_init(), mov_read_chapters(), mov_read_close(), mov_read_header(), mov_read_packet(), mov_read_seek(), mov_seek_fragment(), mov_switch_root(), mov_write_covr(), mov_write_ctts_tag(), mov_write_ftyp_tag(), mov_write_hdlr_tag(), mov_write_header(), mov_write_identification(), mov_write_packet(), mov_write_single_packet(), mov_write_trailer(), mp3_parse_info_tag(), mp3_parse_vbr_tags(), mp3_parse_vbri_tag(), mp3_queue_flush(), mp3_read_header(), mp3_read_packet(), mp3_seek(), mp3_update_xing(), mp3_write_audio_packet(), mp3_write_header(), mp3_write_packet(), mp3_write_trailer(), mp3_write_xing(), mpc8_parse_seektable(), mpc8_read_header(), mpc8_read_packet(), mpc_read_close(), mpc_read_header(), mpc_read_packet(), mpc_read_seek(), mpeg_mux_init(), mpeg_mux_write_packet(), mpegps_read_header(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_deinit(), mpegts_get_dts(), mpegts_get_pcr(), mpegts_init(), mpegts_insert_pcr_only(), mpegts_prefix_m2ts_header(), mpegts_raw_read_packet(), mpegts_read_close(), mpegts_read_header(), mpegts_read_packet(), mpegts_resync(), mpegts_write_packet_internal(), mpegts_write_pat(), mpegts_write_pes(), mpegts_write_pmt(), mpegts_write_sdt(), mpjpeg_read_close(), mpjpeg_read_packet(), mpjpeg_write_header(), mpjpeg_write_packet(), mpl2_read_close(), mpl2_read_header(), mpl2_read_packet(), mpl2_read_seek(), mpsub_read_close(), mpsub_read_header(), mpsub_read_packet(), mpsub_read_seek(), mtv_read_header(), mtv_read_packet(), mv_read_header(), mv_read_packet(), mv_read_seek(), mxf_compute_edit_unit_byte_count(), mxf_compute_essence_containers(), mxf_decrypt_triplet(), mxf_gen_umid(), mxf_init_timecode(), mxf_parse_dnxhd_frame(), mxf_parse_dv_frame(), mxf_parse_h264_frame(), mxf_read_close(), mxf_read_header(), mxf_read_packet(), mxf_read_random_index_pack(), mxf_read_seek(), mxf_write_common_fields(), mxf_write_d10_audio_packet(), mxf_write_essence_container_refs(), mxf_write_footer(), mxf_write_generic_desc(), mxf_write_generic_sound_common(), mxf_write_header(), mxf_write_header_metadata_sets(), mxf_write_identification(), mxf_write_index_table_segment(), mxf_write_multi_descriptor(), mxf_write_opatom_body_partition(), mxf_write_opatom_packet(), 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_tagged_value(), mxf_write_timecode_component(), mxf_write_track(), mxf_write_umid(), mxf_write_user_comments(), mxg_close(), mxg_read_header(), mxg_read_packet(), mxg_update_cache(), nal_send(), ndi_create_audio_stream(), ndi_create_video_stream(), ndi_find_sources(), ndi_read_close(), ndi_read_header(), ndi_read_packet(), ndi_set_audio_packet(), ndi_set_video_packet(), ndi_setup_audio(), ndi_setup_video(), ndi_write_audio_packet(), ndi_write_header(), ndi_write_trailer(), ndi_write_video_packet(), ni_prepare_read(), nprobe(), nsv_parse_NSVf_header(), nsv_parse_NSVs_header(), nsv_read_chunk(), nsv_read_close(), nsv_read_header(), nsv_read_packet(), nsv_read_seek(), nsv_resync(), nut_read_close(), nut_read_header(), nut_read_packet(), nut_read_timestamp(), nut_write_deinit(), nut_write_header(), nut_write_packet(), nut_write_trailer(), nuv_header(), nuv_packet(), nuv_read_dts(), ogg_buffer_data(), ogg_buffer_page(), ogg_calc_pts(), ogg_get_length(), ogg_gptopts(), ogg_init(), ogg_new_stream(), ogg_packet(), ogg_read_close(), ogg_read_header(), ogg_read_packet(), ogg_read_page(), ogg_read_seek(), ogg_read_timestamp(), ogg_replace_stream(), ogg_reset(), ogg_restore(), ogg_save(), ogg_validate_keyframe(), ogg_write_pages(), ogm_dshow_header(), ogm_header(), ogm_packet(), old_dirac_gptopts(), old_dirac_header(), old_flac_header(), oma_read_close(), oma_read_header(), oma_read_packet(), oma_read_seek(), open_camera(), open_demux_for_component(), open_file(), open_next_file(), open_url(), opengl_compute_display_area(), opengl_control_message(), opengl_create_window(), opengl_draw(), opengl_prepare_vertex(), opengl_release_window(), opengl_resize(), opengl_write_header(), opengl_write_trailer(), opus_header(), opus_packet(), output_packet(), output_segment_list(), parse_adaptation_sets(), parse_audio_var(), parse_cc_stream_mapstring(), parse_chunks(), parse_command_line(), parse_device_name(), parse_global_var(), parse_keyframes_index(), parse_manifest(), parse_manifest_adaptationset(), parse_manifest_representation(), parse_manifest_segmenturlnode(), parse_master(), parse_media_type(), parse_playlist(), parse_variant_stream_mapstring(), parse_videoinfoheader2(), pcm_read_header(), picture_coding_extension(), picture_display_extension(), pixfmt_from_pixmap_format(), pjs_read_close(), pjs_read_header(), pjs_read_packet(), pjs_read_seek(), pmp_close(), pmp_header(), pmp_packet(), pmp_seek(), pps(), pps_range_extension(), pred_weight_table(), process_audio_header_eacs(), process_audio_header_elements(), process_audio_header_sead(), process_ea_header(), pulse_audio_sink_input_cb(), pulse_close(), pulse_control_message(), pulse_event(), pulse_get_device_list(), pulse_get_output_timestamp(), pulse_read_header(), pulse_read_packet(), pulse_stream_writable(), pulse_update_sink_info(), pulse_update_sink_input_info(), pulse_write_header(), pulse_write_packet(), pulse_write_trailer(), purge_dialogues(), put_chunk(), put_frame(), put_pack_header(), put_padding_packet(), put_payload_header(), put_payload_parsing_info(), put_swf_end_tag(), put_swf_tag(), put_system_header(), put_vcd_padding_sector(), pva_read_timestamp(), qcp_read_header(), qcp_read_packet(), quantization_params(), r3d_close(), r3d_read_header(), r3d_read_packet(), r3d_read_rdvo(), r3d_read_red1(), r3d_read_reda(), r3d_read_reos(), r3d_seek(), raw_read_packet(), rawvideo_read_header(), read16(), read32(), read_close(), read_close_gme(), read_close_openmpt(), read_close_vs(), read_data(), read_desc_chunk(), read_dst_frame(), read_header(), read_header_gme(), read_header_openmpt(), read_header_vs(), read_line(), read_odml_index(), read_packet(), read_packet_gme(), read_packet_openmpt(), read_packet_vs(), read_pakt_chunk(), read_part_of_packet(), read_seek(), read_seek_gme(), read_seek_openmpt(), read_seek_vs(), read_tx_mode(), read_xing_toc(), real_seek(), realtext_read_close(), realtext_read_header(), realtext_read_packet(), realtext_read_seek(), recheck_discard_flags(), redspark_read_header(), redspark_read_packet(), ref_pic_list_modification(), refresh_manifest(), render_size(), reopen_demux_for_component(), reset_packet_state(), resetup_tcp(), resync(), retransmit_si_info(), rl2_read_packet(), rl2_read_seek(), rm_read_dts(), rm_read_header(), rm_read_header_old(), rm_read_packet(), rm_read_seek(), rm_sync(), rm_write_audio(), rm_write_header(), rm_write_trailer(), rm_write_video(), roq_read_header(), roq_read_packet(), rpl_read_header(), rpl_read_packet(), rprobe(), rtcp_send_sr(), rtp_mpegts_write_close(), rtp_mpegts_write_header(), rtp_mpegts_write_packet(), rtp_send_ilbc(), rtp_send_mpegaudio(), rtp_send_mpegts_raw(), rtp_send_raw(), rtp_send_samples(), rtp_write_header(), rtp_write_packet(), rtp_write_trailer(), rtsp_listen(), rtsp_read_announce(), rtsp_read_close(), rtsp_read_header(), rtsp_read_options(), rtsp_read_packet(), rtsp_read_pause(), rtsp_read_play(), rtsp_read_record(), rtsp_read_request(), rtsp_read_seek(), rtsp_read_setup(), rtsp_send_reply(), rtsp_write_close(), rtsp_write_packet(), rtsp_write_record(), rv10_write_header(), sami_read_close(), sami_read_header(), sami_read_packet(), sami_read_seek(), sap_fetch_packet(), sap_read_close(), sap_read_header(), sap_write_close(), sap_write_header(), sap_write_packet(), save_avio_options(), sbg_read_header(), scan_file(), scc_read_close(), scc_read_header(), scc_read_packet(), scc_read_seek(), scc_write_header(), scc_write_packet(), sdl2_write_header(), sdl2_write_packet(), sdl2_write_trailer(), sds_read_header(), sds_read_packet(), seg_check_bitstream(), seg_free(), seg_init(), seg_write_header(), seg_write_packet(), seg_write_trailer(), segment_end(), segment_list_open(), segment_mux_init(), segment_start(), sei_buffering_period(), sei_pic_timing(), select_reference_stream(), send_mode_a(), send_mode_b(), send_packet(), send_picture(), seq_read_close(), seq_read_header(), seq_read_packet(), sequence_extension(), sequence_header(), ser_read_header(), ser_read_packet(), set_segment_filename(), setup_crossbar_options(), setup_window(), shall_we_drop(), shift_data(), siff_read_header(), siff_read_packet(), skeleton_header(), skip_mode_params(), skip_to_key(), slice_header(), slice_segment_header(), smacker_read_close(), smacker_read_header(), smacker_read_packet(), smjpeg_read_header(), smjpeg_read_packet(), smjpeg_write_packet(), smjpeg_write_trailer(), smush_read_header(), smush_read_packet(), sox_write_header(), sox_write_trailer(), spdif_header_aac(), spdif_header_ac3(), spdif_header_dts(), spdif_header_dts4(), spdif_header_eac3(), spdif_header_mpeg(), spdif_header_truehd(), spdif_write_header(), spdif_write_packet(), spdif_write_trailer(), speex_header(), speex_packet(), sps(), srt_read_close(), srt_read_header(), srt_read_packet(), srt_read_seek(), srt_write_header(), srt_write_packet(), start_jack(), stl_read_close(), stl_read_header(), stl_read_packet(), stl_read_seek(), str_read_close(), str_read_header(), str_read_packet(), subviewer1_read_close(), subviewer1_read_header(), subviewer1_read_packet(), subviewer1_read_seek(), subviewer_read_close(), subviewer_read_header(), subviewer_read_packet(), subviewer_read_seek(), superres_params(), swf_read_header(), swf_read_packet(), swf_write_audio(), swf_write_header(), swf_write_trailer(), swf_write_video(), tak_read_header(), tedcaptions_read_close(), tedcaptions_read_header(), tedcaptions_read_packet(), tedcaptions_read_seek(), tee_process_slave_failure(), tee_write_header(), tee_write_packet(), tee_write_trailer(), temporal_delimiter_obu(), theora_gptopts(), theora_header(), theora_packet(), thp_read_header(), thp_read_packet(), tile_group_obu(), tile_info(), tmv_read_header(), tmv_read_packet(), tmv_read_seek(), try_seek(), tta_init(), tta_queue_flush(), tta_read_header(), tta_read_packet(), tta_read_seek(), tta_write_header(), tta_write_packet(), tta_write_trailer(), ty_read_close(), ty_read_header(), ty_read_packet(), uncompressed_header(), update_index(), update_init_section(), update_master_pl_info(), update_noheader_flag(), update_odml_entry(), update_variant_stream_info(), v210_read_header(), v4l2_get_device_list(), v4l2_read_close(), v4l2_read_header(), v4l2_read_packet(), v4l2_set_parameters(), vc1test_write_packet(), vc1test_write_trailer(), vfw_read_close(), vfw_read_header(), vfw_read_packet(), vid_read_close(), vid_read_header(), vid_read_packet(), decklink_input_callback::VideoInputFrameArrived(), videostream_cb(), vivo_get_packet_header(), vivo_read_header(), vivo_read_packet(), vmd_read_close(), vmd_read_header(), vmd_read_packet(), voc_read_header(), voc_read_seek(), voc_write_packet(), vorbis_cleanup(), vorbis_header(), vorbis_packet(), vorbis_update_metadata(), vp8_gptopts(), vp8_header(), vp8_packet(), vpk_read_header(), vpk_read_packet(), vplayer_read_close(), vplayer_read_header(), vplayer_read_packet(), vplayer_read_seek(), vqf_read_header(), vqf_read_packet(), vqf_read_seek(), wait_for_image_format(), wait_frame(), wc3_read_close(), wc3_read_header(), wc3_read_packet(), webm_chunk_write_header(), webm_chunk_write_packet(), webm_chunk_write_trailer(), webm_clusters_start_with_keyframe(), webm_dash_manifest_compute_bandwidth(), webm_dash_manifest_cues(), webm_dash_manifest_read_header(), webm_dash_manifest_write_header(), webp_write_packet(), webp_write_trailer(), webvtt_read_close(), webvtt_read_header(), webvtt_read_packet(), webvtt_read_seek(), write_abst(), write_adaptation_set(), write_chunk_header(), write_chunk_header2(), write_header(), write_headers(), write_image_header(), write_index(), write_manifest(), write_metadata(), write_odml_master(), write_packet(), write_picture(), write_representation(), write_root_table(), write_streamheader(), write_sync(), write_table_entries_attrib(), write_table_entries_events(), write_table_entries_time(), write_table_redirector_legacy_attrib(), write_timestamp(), write_trailer(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_block_header(), wv_read_header(), wv_read_packet(), wv_write_packet(), wv_write_trailer(), xa_read_header(), xa_read_packet(), xcbgrab_frame(), xcbgrab_read_close(), xcbgrab_read_header(), xcbgrab_read_packet(), xcbgrab_reposition(), xcbgrab_update_region(), xmv_fetch_audio_packet(), xmv_fetch_new_packet(), xmv_fetch_video_packet(), xmv_process_packet_header(), xmv_read_close(), xmv_read_header(), xmv_read_packet(), xv_repaint(), xv_write_header(), xv_write_trailer(), xwma_read_header(), xwma_read_packet(), yop_read_close(), yop_read_header(), yop_read_packet(), yop_read_seek(), yuv4_write_header(), and yuv4_write_packet().

AVIOContext* AVFormatContext::pb

I/O context.

• demuxing: either set by the user before avformat_open_input() (then the user must close it manually) or set by avformat_open_input().
• muxing: set by the user before avformat_write_header(). The caller must take care of closing / freeing the IO context.

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.

Examples:

avio_reading.c, muxing.c, transcoding.c, and vaapi_transcode.c.

Definition at line 1393 of file avformat.h.

Referenced by a64_write_header(), aa_read_header(), aa_read_packet(), aa_read_seek(), aal_read_packet(), acm_read_header(), add_metadata(), adp_read_header(), adp_read_packet(), ads_read_header(), ads_read_packet(), adts_aac_read_header(), adts_aac_read_packet(), 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(), aix_read_header(), aix_read_packet(), 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(), apng_read_header(), apng_read_packet(), apng_write_header(), apng_write_trailer(), aptx_hd_read_packet(), aptx_read_packet(), aqt_read_header(), asf_build_simple_index(), asf_read_content_desc(), asf_read_data(), asf_read_ext_content(), 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_metadata_obj(), asf_read_multiple_payload(), asf_read_packet(), asf_read_packet_header(), asf_read_payload(), asf_read_picture(), asf_read_properties(), asf_read_pts(), asf_read_replicated_data(), asf_read_seek(), asf_read_simple_index(), asf_read_single_payload(), asf_read_stream_properties(), asf_read_subpayload(), asf_read_timestamp(), asf_read_unknown(), asf_read_value(), asf_set_metadata(), asf_store_aspect_ratio(), asf_write_header(), asf_write_header1(), asf_write_index(), asf_write_markers(), asf_write_packet(), 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_add_ientry(), 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_packet_internal(), 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(), caf_write_header(), caf_write_packet(), caf_write_trailer(), cdata_read_header(), cdata_read_packet(), cdxl_read_header(), cdxl_read_packet(), chunk_end(), chunk_start(), cin_read_header(), cin_read_packet(), cine_read_header(), cine_read_packet(), cine_read_seek(), close_demux_for_component(), close_slave(), codec2_read_header(), codec2_read_packet(), codec2_write_header(), concat_read_header(), crc_write_trailer(), dash_flush(), dash_free(), dash_init(), dash_read_header(), dash_write_packet(), daud_packet(), daud_write_packet(), dcstr_read_header(), dcstr_read_packet(), decode_fctl_chunk(), decode_frame(), decode_frame_header(), decode_info_header(), decode_main_header(), decode_stream_header(), decode_syncpoint(), detect_unknown_subobject(), dfa_read_header(), dfa_read_packet(), dsf_read_header(), dsf_read_packet(), dss_723_1_read_packet(), dss_read_header(), dss_read_metadata_date(), dss_read_metadata_string(), dss_read_seek(), dss_skip_audio_header(), dss_sp_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(), ff_ape_parse_tag(), ff_ape_write_tag(), ff_configure_buffers_for_index(), ff_find_last_ts(), ff_format_output_open(), ff_framehash_write_header(), ff_id3v1_read(), ff_id3v2_read(), ff_id3v2_write_apic(), ff_id3v2_write_metadata(), ff_id3v2_write_simple(), ff_img_read_header(), ff_img_read_packet(), 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_read_riff_info(), ff_riff_write_info(), ff_rtp_chain_mux_open(), ff_rtp_send_data(), ff_rtsp_tcp_write_packet(), ff_rtsp_undo_setup(), ff_sauce_read(), ff_seek_frame_binary(), ff_spdif_read_packet(), ff_voc_get_packet(), ff_wms_parse_sdp_a_line(), ffmpeg_cleanup(), fifo_thread_write_trailer(), film_read_header(), film_read_packet(), film_read_seek(), film_write_header(), film_write_packet(), film_write_packet_to_header(), find_and_decode_index(), finish(), finish_chunk_noindex(), finish_file(), finished_reading_packet(), fits_read_packet(), fits_write_packet(), flac_finish_header(), flac_read_header(), flac_read_timestamp(), flac_seek(), flac_write_audio_packet(), flac_write_header(), flac_write_picture(), flac_write_trailer(), flic_read_header(), flic_read_packet(), flush(), flush_dynbuf(), flush_if_needed(), 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_codec_header(), flv_write_header(), flv_write_packet(), flv_write_trailer(), format_child_next(), fourxm_read_header(), fourxm_read_packet(), framecrc_write_header(), framecrc_write_packet(), free_playlist_list(), free_representation(), frm_read_header(), frm_read_packet(), fsb_read_header(), fsb_read_packet(), g723_1_read_packet(), g726_read_packet(), g729_read_packet(), gdv_read_header(), gdv_read_packet(), genh_read_header(), genh_read_packet(), get_aac_sample_rates(), get_aiff_header(), get_chunk(), get_meta(), get_metadata(), get_packet_header(), get_tag(), gif_read_ext(), gif_read_header(), gif_read_packet(), gif_write_header(), gif_write_packet(), 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_id3(), handle_packet(), handle_packets(), hds_flush(), hds_free(), hds_write_header(), hls_mux_init(), hls_read_header(), hls_start(), hls_write_packet(), hls_write_trailer(), hnm_read_header(), hnm_read_packet(), 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(), ingenient_read_packet(), init_fps(), init_input(), ipmovie_read_header(), ipmovie_read_packet(), ircam_read_header(), ircam_write_header(), is_image(), is_realtime(), ism_flush(), ism_free(), ism_write_header(), iss_read_header(), iss_read_packet(), ivf_write_header(), ivf_write_packet(), ivf_write_trailer(), ivr_read_header(), ivr_read_packet(), jacosub_read_header(), jacosub_write_header(), latm_write_packet(), lmlm4_read_packet(), lrc_read_header(), lrc_write_header(), lrc_write_packet(), lvf_read_header(), lvf_read_packet(), lxf_read_header(), lxf_read_packet(), lxf_sync(), 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(), microdvd_read_header(), microdvd_write_header(), microdvd_write_packet(), mkv_check_new_extra_data(), mkv_start_new_cluster(), mkv_write_attachments(), mkv_write_chapters(), mkv_write_cues(), mkv_write_flush_packet(), mkv_write_header(), mkv_write_packet(), mkv_write_packet_internal(), mkv_write_tag_targets(), mkv_write_tags(), mkv_write_tracks(), mkv_write_trailer(), mmf_read_header(), mmf_read_packet(), modplug_read_header(), mov_find_next_sample(), mov_flush_fragment(), mov_init(), mov_read_header(), mov_read_rtmd_track(), mov_read_timecode_track(), mov_read_trak(), mov_switch_root(), mov_write_header(), mov_write_trailer(), mp3_parse_info_tag(), mp3_parse_vbr_tags(), mp3_parse_vbri_tag(), mp3_queue_flush(), mp3_read_header(), mp3_read_packet(), mp3_seek(), mp3_sync(), mp3_update_xing(), mp3_write_header(), 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_end(), mpegts_write_packet_internal(), mpegts_write_pes(), mpjpeg_read_header(), mpjpeg_read_packet(), mpjpeg_write_header(), mpjpeg_write_packet(), mpl2_read_header(), mpsub_read_header(), msf_read_header(), msf_read_packet(), msnwc_tcp_read_header(), msnwc_tcp_read_packet(), mtaf_read_header(), mtaf_read_packet(), mtv_read_header(), mtv_read_packet(), musx_read_header(), musx_read_packet(), mv_read_header(), mv_read_packet(), mv_read_seek(), mxf_decrypt_triplet(), mxf_get_eia608_packet(), mxf_parse_handle_essence(), mxf_parse_klv(), mxf_read_header(), mxf_read_local_tags(), mxf_read_packet(), mxf_read_random_index_pack(), mxf_read_seek(), mxf_seek_to_previous_partition(), mxf_write_aes3_desc(), mxf_write_cdci_common(), mxf_write_cdci_desc(), mxf_write_common_fields(), mxf_write_content_storage(), mxf_write_d10_audio_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_generic_sound_desc(), mxf_write_identification(), mxf_write_index_table_segment(), mxf_write_klv_fill(), mxf_write_mpegvideo_desc(), mxf_write_multi_descriptor(), mxf_write_opatom_body_partition(), mxf_write_opatom_packet(), mxf_write_package(), mxf_write_packet(), mxf_write_partition(), mxf_write_preface(), mxf_write_primer_pack(), mxf_write_random_index_pack(), mxf_write_s436m_anc_desc(), mxf_write_sequence(), mxf_write_structural_component(), mxf_write_system_item(), mxf_write_tagged_value(), mxf_write_tape_descriptor(), mxf_write_timecode_component(), mxf_write_track(), mxf_write_umid(), mxf_write_wav_common(), mxf_write_wav_desc(), mxg_read_packet(), mxg_update_cache(), nc_read_packet(), need_output(), nist_read_header(), nsp_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_seek(), oma_write_header(), open_output_file(), parse_audio_var(), parse_dsd_diin(), parse_dsd_prop(), parse_global_var(), parse_playlist(), parse_video_var(), pcm_read_header(), 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_metadata(), process_video_header_cmv(), process_video_header_mdec(), process_video_header_vp6(), purge_dialogues(), 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(), 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(), read16(), read32(), read_atom(), read_chapter(), read_desc_chunk(), read_dst_frame(), read_gab2_sub(), read_header(), read_header_gme(), read_header_openmpt(), read_header_vs(), read_id3(), read_info_chunk(), read_kuki_chunk(), read_odml_index(), read_packet(), read_pakt_chunk(), read_part_of_packet(), read_seek(), read_table(), read_thread(), read_xing_toc(), realtext_read_header(), reanalyze(), redspark_read_header(), redspark_read_packet(), reopen_demux_for_component(), resync(), rl2_read_header(), rl2_read_packet(), rm_read_dts(), rm_read_header(), rm_read_header_old(), rm_read_index(), rm_read_multi(), rm_read_packet(), rm_sync(), 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(), rsd_read_header(), rsd_read_packet(), rso_read_header(), rso_write_header(), rso_write_packet(), rso_write_trailer(), rtp_mpegts_write_close(), rtp_mpegts_write_header(), rtp_mpegts_write_packet(), rtp_write_header(), rtp_write_trailer(), rv10_write_header(), s337m_read_packet(), sami_read_header(), sap_read_header(), sap_write_close(), save_avio_options(), sbg_read_header(), scc_read_header(), scc_write_header(), scc_write_packet(), sdr2_read_header(), sdr2_read_packet(), sds_read_header(), sds_read_packet(), sdx_read_header(), section_write_packet(), seek_frame_byte(), seek_frame_generic(), seg_init(), seg_write_header(), seg_write_packet(), seg_write_trailer(), segment_end(), segment_start(), seq_read_header(), seq_read_packet(), ser_read_header(), ser_read_packet(), set_spdif(), 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(), srt_read_header(), srt_write_packet(), stl_read_header(), store_version(), str_read_header(), str_read_packet(), subviewer1_read_header(), subviewer_read_header(), sup_read_packet(), sup_write_packet(), svag_read_header(), svag_read_packet(), swf_read_header(), swf_read_packet(), swf_write_header(), swf_write_trailer(), swf_write_video(), tak_read_header(), tedcaptions_read_header(), thp_read_header(), thp_read_packet(), threedostr_read_header(), threedostr_read_packet(), tmv_read_header(), tmv_read_packet(), tmv_read_seek(), tta_queue_flush(), tta_read_header(), tta_read_packet(), tta_read_seek(), tta_write_header(), tta_write_trailer(), txd_read_packet(), ty_read_header(), ty_read_packet(), update_odml_entry(), update_stream_timings(), v210_read_packet(), vag_read_header(), vag_read_packet(), 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_read_seek(), voc_write_header(), voc_write_packet(), voc_write_trailer(), vpk_read_header(), vpk_read_packet(), vplayer_read_header(), vqf_read_header(), vqf_read_packet(), vqf_read_seek(), wc3_read_header(), wc3_read_packet(), webm_chunk_write_header(), webm_clusters_start_with_keyframe(), webm_dash_manifest_cues(), webm_dash_manifest_read_header(), webm_dash_manifest_write_header(), webp_write_packet(), webp_write_trailer(), webvtt_read_header(), webvtt_write_header(), webvtt_write_packet(), write_adaptation_set(), write_chapter(), write_chunk_header(), write_chunk_header2(), write_fat_sector(), write_footer(), write_frame(), write_header(), write_image_header(), write_index(), write_keyword_value(), write_metadata(), write_odml_master(), write_packet(), write_packet_header(), write_representation(), 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(), wsd_read_header(), wsvqa_read_header(), wsvqa_read_packet(), wtvfile_open_sector(), wv_read_header(), wv_read_packet(), wv_write_packet(), wv_write_trailer(), wve_read_header(), 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(), xvag_read_header(), xvag_read_packet(), xwma_read_header(), xwma_read_packet(), yop_read_header(), yop_read_packet(), yop_read_seek(), yuv4_read_header(), yuv4_read_packet(), yuv4_read_seek(), and yuv4_write_packet().

int AVFormatContext::ctx_flags

Flags signalling stream properties.

A combination of AVFMTCTX_*. Set by libavformat.

Definition at line 1400 of file avformat.h.

Referenced by amf_parse_object(), avformat_find_stream_info(), avs_read_header(), cdxl_read_header(), create_stream(), ff_img_read_header(), ff_rtsp_open_transport_ctx(), flv_read_header(), handle_packet(), hls_read_header(), hls_read_packet(), hls_read_seek(), ipmovie_read_header(), mpegps_read_header(), mpegts_read_header(), ndi_read_header(), parse_playlist(), r3d_read_header(), read_header(), read_header_vs(), roq_read_header(), s337m_read_header(), sap_fetch_packet(), sap_read_header(), spdif_read_header(), str_read_header(), swf_read_header(), update_noheader_flag(), vid_read_header(), voc_read_header(), wsvqa_read_header(), and xmv_read_header().

unsigned int AVFormatContext::nb_streams

Number of elements in AVFormatContext.streams.

Set by avformat_new_stream(), must not be modified by any other code.

Examples:

muxing.c, qsvdec.c, remuxing.c, and transcoding.c.

Definition at line 1407 of file avformat.h.

Referenced by add_input_streams(), add_keyframes_index(), add_stream(), aiff_write_header(), aix_read_packet(), amf_parse_object(), apng_write_header(), asf_read_pts(), asf_read_stream_properties(), asf_write_header(), asf_write_header1(), asfrtp_parse_packet(), asfrtp_parse_sdp_line(), ast_write_header(), audio_write_header(), av_dump_format(), av_find_best_stream(), av_find_default_stream_index(), av_format_inject_global_side_data(), av_program_add_stream_index(), av_write_trailer(), avformat_find_stream_info(), avformat_free_context(), avformat_match_stream_specifier(), avformat_new_stream(), avformat_open_input(), avformat_queue_attached_pictures(), avformat_seek_file(), avi_read_close(), avi_read_header(), avi_read_idx1(), 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_frame_code(), caca_write_header(), caf_write_header(), calculate_bitrate(), check_init_output_file(), check_packet(), check_stream_max_drift(), check_video_streams(), chunk_mux_init(), clean_index(), clear_index_entries(), close_slave(), codec2_write_header(), concat_read_header(), configure_output_audio_filter(), copy_metadata(), create_stream(), create_subcc_streams(), dash_flush(), dash_free(), dash_init(), dash_write_header(), dash_write_trailer(), decode_info_header(), do_video_out(), dump_video_streams(), dv_init_mux(), dv_write_header(), enable_tracks(), estimate_timings(), estimate_timings_from_bit_rate(), estimate_timings_from_pts(), export_orphan_timecode(), fbdev_write_header(), ff_audio_interleave_close(), ff_audio_interleave_init(), ff_audio_rechunk_interleave(), ff_configure_buffers_for_index(), ff_decklink_write_header(), ff_find_stream_index(), ff_framehash_write_header(), ff_free_stream(), ff_interleave_packet_per_dts(), ff_metadata_conv_ctx(), ff_mov_read_esds(), ff_mov_read_stsd_entries(), ff_nut_reset_ts(), ff_rdt_parse_open(), ff_read_frame_flush(), ff_read_packet(), ff_rfps_calculate(), ff_rtsp_setup_output_streams(), ff_spdif_read_packet(), ff_update_cur_dts(), fifo_mux_init(), fifo_thread_write_header(), fill_all_stream_timings(), film_init(), film_read_header(), finalize_packet(), find_and_decode_index(), find_matching_stream(), find_stream(), find_video_stream_info(), finish_output_stream(), flac_finish_header(), flac_init(), flv_data_packet(), flv_read_metabody(), flv_read_packet(), flv_write_header(), flv_write_trailer(), force_one_stream(), framecrc_write_header(), get_current_encryption_info(), get_duration(), get_metadata_duration(), get_nth_codec_stream_index(), get_packet_header(), get_sindex(), 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(), handle_id3(), handle_packet(), has_duration(), hds_free(), hds_write_header(), hls_read_header(), hls_read_packet(), ico_write_header(), id3_has_changed_values(), ilbc_write_header(), init_filters(), init_input_filter(), init_muxer(), init_output_stream_encode(), init_pts(), ircam_write_header(), ism_flush(), ism_free(), ism_write_header(), ivf_write_header(), ivr_read_packet(), log_slave(), lrc_write_header(), lxf_read_packet(), main(), match_streams(), match_streams_exact_id(), match_streams_one_to_one(), microdvd_write_header(), mkv_init(), mkv_write_attachments(), mkv_write_header(), mkv_write_tags(), mkv_write_tracks(), mkv_write_trailer(), mov_find_next_sample(), mov_flush_fragment(), mov_init(), mov_read_aclr(), mov_read_ares(), mov_read_av1c(), mov_read_chan(), mov_read_chapters(), mov_read_clli(), mov_read_close(), mov_read_coll(), mov_read_colr(), mov_read_ctts(), mov_read_custom(), mov_read_dac3(), mov_read_ddts(), mov_read_dec3(), mov_read_dfla(), mov_read_dops(), mov_read_dref(), mov_read_dvc1(), mov_read_elst(), mov_read_enda(), mov_read_extradata(), mov_read_fiel(), mov_read_frma(), mov_read_glbl(), mov_read_hdlr(), mov_read_header(), mov_read_mdcv(), mov_read_mdhd(), mov_read_pasp(), mov_read_pssh(), mov_read_sbgp(), mov_read_schm(), mov_read_seek(), mov_read_sidx(), mov_read_smdm(), mov_read_st3d(), mov_read_stco(), mov_read_stps(), mov_read_strf(), mov_read_stsc(), mov_read_stsd(), mov_read_stss(), mov_read_stsz(), mov_read_stts(), mov_read_sv3d(), mov_read_targa_y216(), mov_read_tenc(), mov_read_tfdt(), mov_read_tkhd(), mov_read_tmcd(), mov_read_trak(), mov_read_trun(), mov_read_uuid(), mov_read_vpcc(), mov_read_wave(), mov_read_wfex(), mov_setup_track_ids(), mov_write_covr(), mov_write_ftyp_tag(), mov_write_header(), mov_write_identification(), mov_write_moov_tag(), mov_write_single_packet(), mov_write_trailer(), movie_common_init(), mp3_write_header(), mpc8_parse_seektable(), mpeg_mux_end(), mpeg_mux_init(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_deinit(), mpegts_init(), mpegts_write_flush(), mpegts_write_packet_internal(), mpegts_write_pmt(), mv_read_packet(), mv_read_seek(), mxf_compute_edit_unit_byte_count(), mxf_compute_index_tables(), mxf_free(), mxf_get_stream_index(), mxf_get_wrapping_by_body_sid(), mxf_interleave_get_packet(), mxf_read_close(), mxf_read_header(), mxf_read_seek(), mxf_write_essence_container_refs(), mxf_write_header(), mxf_write_header_metadata_sets(), mxf_write_index_table_segment(), mxf_write_multi_descriptor(), mxf_write_package(), mxf_write_partition(), mxf_write_system_item(), ndi_write_header(), need_output(), new_output_stream(), ni_prepare_read(), nsv_parse_NSVs_header(), nsv_read_chunk(), nsv_read_header(), nut_read_header(), nut_write_deinit(), nut_write_header(), nut_write_packet(), ogg_free(), ogg_init(), ogg_write_header(), ogg_write_packet(), ogg_write_trailer(), open_demux_for_component(), open_input_file(), open_output_file(), open_slave(), opengl_write_header(), output_packet(), parse_adaptation_sets(), pmt_cb(), print_final_stats(), probe_file(), process_input(), process_ipmovie_chunk(), pulse_write_header(), put_system_header(), qt_rtp_parse_packet(), r3d_read_packet(), r3d_read_reda(), rdt_parse_sdp_line(), read_frame_internal(), read_gab2_sub(), read_header(), read_interval_packets(), read_odml_index(), read_packet(), read_seek(), read_thread(), real_seek(), remove_decoded_packets(), reopen_demux_for_component(), rl2_read_packet(), rl2_read_seek(), rm_read_close(), rm_read_index(), rm_sync(), rm_write_header(), rm_write_trailer(), roq_write_header(), rpl_read_packet(), rtp_mpegts_write_header(), rtp_write_header(), rtsp_read_header(), rtsp_read_packet(), rv10_write_header(), s337m_read_packet(), sap_fetch_packet(), sap_read_header(), sap_write_close(), sap_write_header(), scc_write_header(), sdl2_write_header(), seg_init(), seg_write_header(), segment_end(), segment_mux_init(), select_reference_stream(), set_disposition_bits(), setup_find_stream_info_opts(), show_format(), smjpeg_write_header(), srt_write_header(), stream_component_close(), stream_component_open(), stream_cycle_channel(), sub2video_prepare(), sup_write_header(), swf_read_packet(), swf_write_header(), swf_write_trailer(), tee_write_header(), tmcd_is_referenced(), transcode_init(), try_seek(), tta_init(), update_frag_index(), update_stream_avctx(), update_stream_timings(), update_streams_from_subdemuxer(), update_variant_stream_info(), update_wrap_reference(), voc_read_packet(), voc_read_seek(), voc_write_header(), webm_chunk_write_header(), webm_chunk_write_trailer(), webm_dash_manifest_read_header(), webp_write_header(), webvtt_write_header(), write_adaptation_set(), write_header(), write_headers(), write_index(), write_mainheader(), write_manifest(), write_trailer(), wv_write_header(), xmv_process_packet_header(), xv_write_header(), and yuv4_write_header().

AVStream** AVFormatContext::streams

A list of all streams in the file.

New streams are created with avformat_new_stream().

• demuxing: 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().
• muxing: streams are created by the user before avformat_write_header().

Freed by libavformat in avformat_free_context().

Examples:

demuxing_decoding.c, filtering_audio.c, filtering_video.c, hw_decode.c, muxing.c, qsvdec.c, remuxing.c, transcoding.c, and vaapi_transcode.c.

Definition at line 1419 of file avformat.h.

Referenced by a64_write_header(), aa_read_seek(), aal_read_packet(), adaptation_set_add_stream(), add_input_streams(), add_keyframes_index(), ads_read_packet(), adts_init(), adts_write_packet(), adx_read_header(), adx_read_packet(), aea_read_packet(), aiff_read_packet(), aiff_write_header(), aiff_write_packet(), aiff_write_trailer(), aix_read_header(), amr_parse_sdp_line(), amr_read_packet(), ape_read_seek(), apng_read_packet(), apng_write_header(), asf_build_simple_index(), asf_parse_packet(), asf_read_data(), asf_read_ext_stream_properties(), asf_read_frame_header(), asf_read_header(), asf_read_pts(), asf_read_seek(), asf_read_simple_index(), asf_read_timestamp(), asf_write_header1(), asf_write_packet(), asfrtp_parse_packet(), asfrtp_parse_sdp_line(), ast_read_packet(), ast_write_header(), ast_write_packet(), ast_write_trailer(), audio_write_frame(), audio_write_header(), av_find_best_stream(), av_find_default_stream_index(), av_format_inject_global_side_data(), av_interleaved_write_frame(), av_read_frame(), av_write_frame(), av_write_trailer(), avformat_find_stream_info(), avformat_free_context(), avformat_match_stream_specifier(), avformat_new_stream(), avformat_open_input(), avformat_queue_attached_pictures(), avformat_seek_file(), avi_add_ientry(), 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_packet(), avi_write_packet_internal(), avi_write_trailer(), avisynth_next_stream(), avisynth_read_seek(), bitstream_switching(), build_frame_code(), caca_write_header(), caf_write_header(), caf_write_packet(), caf_write_trailer(), calculate_bitrate(), celt_header(), check_matching_height(), check_matching_sample_rate(), check_matching_width(), check_packet(), check_stream_max_drift(), check_video_streams(), chunk_mux_init(), cine_read_packet(), clean_index(), clear_index_entries(), codec2_read_packet(), codec2_write_header(), compute_display_area(), compute_texture_rect(), concat_read_header(), concat_read_packet(), configure_output_audio_filter(), copy_metadata(), create_stream(), daala_header(), daala_packet(), dash_check_bitstream(), dash_flush(), dash_init(), dash_read_header(), dash_read_packet(), dash_read_seek(), dash_write_packet(), dash_write_trailer(), daud_write_header(), dcstr_read_packet(), decklink_write_video_packet(), decode_fctl_chunk(), decode_frame(), decode_info_header(), decode_stream_header(), detect_stream_specific(), dirac_header(), do_packet_auto_bsf(), dsf_read_packet(), dss_723_1_read_packet(), dss_sp_read_packet(), dump_stream_format(), dump_video_streams(), dv_init_mux(), dv_parse_sdp_line(), dv_write_header(), dv_write_packet(), enable_tracks(), encode_write(), encode_write_frame(), estimate_timings(), estimate_timings_from_bit_rate(), estimate_timings_from_pts(), export_orphan_timecode(), fbdev_write_header(), fbdev_write_packet(), ff_audio_interleave_close(), ff_audio_interleave_init(), ff_audio_rechunk_interleave(), ff_configure_buffers_for_index(), ff_decklink_write_header(), ff_decklink_write_packet(), ff_find_stream_index(), ff_framehash_write_header(), ff_free_stream(), ff_id3v2_write_apic(), ff_img_read_packet(), ff_interleave_add_packet(), ff_interleave_packet_per_dts(), ff_interleaved_peek(), ff_load_image(), ff_metadata_conv_ctx(), ff_mov_init_hinting(), ff_mov_read_esds(), ff_mov_read_stsd_entries(), ff_mov_write_packet(), ff_pcm_read_packet(), ff_pcm_read_seek(), ff_rdt_parse_open(), ff_read_frame_flush(), ff_read_packet(), ff_read_timestamp(), ff_real_parse_sdp_a_line(), ff_reduce_index(), ff_rfps_calculate(), ff_rtp_chain_mux_open(), ff_rtp_send_aac(), ff_rtp_send_amr(), ff_rtp_send_jpeg(), ff_rtp_send_latm(), ff_rtp_send_xiph(), ff_rtsp_open_transport_ctx(), ff_sauce_read(), ff_seek_frame_binary(), ff_spdif_read_packet(), ff_update_cur_dts(), ff_write_chained(), fifo_mux_init(), fifo_thread_attempt_recovery(), fifo_thread_write_header(), fifo_thread_write_packet(), fill_all_stream_timings(), fill_timing_for_id3_timestamped_stream(), film_init(), film_read_header(), film_read_seek(), film_write_header(), film_write_packet(), find_and_decode_index(), find_matching_stream(), find_stream(), find_video_stream_info(), flac_finish_header(), flac_header(), flac_init(), flac_read_timestamp(), flac_seek(), flac_write_header(), flac_write_packet(), flac_write_picture(), flac_write_trailer(), flush(), flush_buffered(), flush_packet(), flv_data_packet(), flv_read_metabody(), flv_read_packet(), flv_write_header(), flv_write_packet(), flv_write_trailer(), framecrc_write_header(), frm_read_packet(), fsb_read_packet(), g729_read_packet(), genh_read_packet(), get_aiff_header(), get_cue_desc(), get_current_encryption_info(), get_duration(), get_metadata_duration(), get_nth_codec_stream_index(), get_packet_header(), get_private_data(), get_subtitle_pkt(), get_system_header_size(), get_timebase(), gif_read_packet(), gif_write_header(), gif_write_packet(), guess_ni_flag(), gxf_compare_field_nb(), gxf_header(), gxf_interleave_packet(), gxf_packet(), gxf_read_index(), gxf_seek(), gxf_write_header(), gxf_write_media_preamble(), gxf_write_packet(), gxf_write_track_description(), gxf_write_track_description_section(), gxf_write_umf_media_description(), gxf_write_umf_track_description(), handle_file(), handle_packet(), has_duration(), hds_flush(), hds_write_header(), hds_write_packet(), hevc_parse_sdp_line(), hls_read_packet(), hls_read_seek(), hls_write_header(), hls_write_packet(), ico_write_header(), ico_write_packet(), ico_write_trailer(), id3_has_changed_values(), idcin_read_seek(), iff_read_packet(), ilbc_parse_sdp_line(), ilbc_read_packet(), ilbc_write_header(), img_read_seek(), init_convert_timestamp(), init_filters(), init_input_filter(), init_muxer(), init_output_stream_encode(), init_pts(), interleave_compare_dts(), interleave_new_audio_packet(), ircam_write_header(), ism_write_header(), ism_write_packet(), iss_read_packet(), ivf_check_bitstream(), ivf_write_header(), ivr_read_packet(), jacosub_write_header(), latm_check_bitstream(), latm_parse_sdp_line(), latm_write_frame_header(), latm_write_header(), latm_write_packet(), lavfi_read_header(), log_packet(), log_slave(), lrc_write_header(), main(), match_streams_exact_id(), match_streams_one_to_one(), matroska_read_seek(), microdvd_write_header(), mkv_check_bitstream(), mkv_check_new_extra_data(), mkv_init(), mkv_write_attachments(), mkv_write_block(), mkv_write_cues(), mkv_write_header(), mkv_write_packet(), mkv_write_packet_internal(), mkv_write_tags(), mkv_write_track(), mkv_write_tracks(), mkv_write_trailer(), mov_check_bitstream(), mov_check_timecode_track(), mov_create_timecode_track(), mov_find_next_sample(), mov_init(), mov_read_aclr(), mov_read_ares(), mov_read_av1c(), mov_read_chan(), mov_read_chapters(), mov_read_clli(), mov_read_close(), mov_read_coll(), mov_read_colr(), mov_read_ctts(), mov_read_custom(), mov_read_dac3(), mov_read_ddts(), mov_read_dec3(), mov_read_dfla(), mov_read_dops(), mov_read_dref(), mov_read_dvc1(), mov_read_elst(), mov_read_enda(), mov_read_extradata(), mov_read_fiel(), mov_read_frma(), mov_read_glbl(), mov_read_hdlr(), mov_read_header(), mov_read_mdcv(), mov_read_mdhd(), mov_read_pasp(), mov_read_pssh(), mov_read_sbgp(), mov_read_schm(), mov_read_seek(), mov_read_sidx(), mov_read_smdm(), mov_read_st3d(), mov_read_stco(), mov_read_stps(), mov_read_strf(), mov_read_stsc(), mov_read_stsd(), mov_read_stss(), mov_read_stsz(), mov_read_stts(), mov_read_sv3d(), mov_read_targa_y216(), mov_read_tenc(), mov_read_tfdt(), mov_read_tkhd(), mov_read_tmcd(), mov_read_trun(), mov_read_uuid(), mov_read_vpcc(), mov_read_wave(), mov_read_wfex(), mov_setup_track_ids(), mov_write_ftyp_tag(), mov_write_header(), mov_write_identification(), mov_write_moov_tag(), mov_write_single_packet(), mov_write_udta_sdp(), mov_write_uuidprof_tag(), movie_common_init(), mp3_seek(), mp3_update_xing(), mp3_write_header(), mp3_write_packet(), mp3_write_xing(), mpc8_parse_seektable(), mpc8_read_seek(), mpc_read_packet(), mpc_read_seek(), mpeg_mux_end(), mpeg_mux_init(), mpeg_mux_write_packet(), mpegps_read_dts(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_check_bitstream(), mpegts_deinit(), mpegts_get_dts(), mpegts_get_pcr(), mpegts_init(), mpegts_push_data(), mpegts_write_flush(), mpegts_write_packet_internal(), mpegts_write_pmt(), msf_read_packet(), mtaf_read_packet(), musx_read_packet(), mv_read_packet(), mv_read_seek(), mxf_compare_timestamps(), mxf_compute_edit_unit_byte_count(), mxf_compute_index_tables(), mxf_free(), mxf_get_stream_index(), mxf_get_wrapping_by_body_sid(), mxf_interleave_get_packet(), mxf_read_close(), mxf_read_header(), mxf_read_packet(), mxf_read_seek(), mxf_set_audio_pts(), mxf_write_essence_container_refs(), mxf_write_header(), mxf_write_header_metadata_sets(), mxf_write_index_table_segment(), mxf_write_multi_descriptor(), mxf_write_opatom_body_partition(), mxf_write_package(), mxf_write_packet(), mxf_write_system_item(), nal_send(), ndi_write_header(), ndi_write_packet(), ni_prepare_read(), nsv_read_chunk(), nsv_read_seek(), nut_write_header(), nut_write_packet(), nuv_read_dts(), ogg_buffer_data(), ogg_compare_granule(), ogg_free(), ogg_get_length(), ogg_init(), ogg_read_header(), ogg_read_seek(), ogg_validate_keyframe(), ogg_write_header(), ogg_write_packet(), ogg_write_packet_internal(), ogg_write_page(), ogg_write_pages(), ogg_write_trailer(), ogm_dshow_header(), ogm_header(), old_dirac_header(), old_flac_header(), oma_read_seek(), oma_write_header(), open_codec_context(), open_demux_for_component(), open_input_file(), open_output_file(), open_slave(), opengl_compute_display_area(), opengl_draw(), opengl_write_header(), opt_map(), opt_map_channel(), opt_target(), opus_header(), opus_packet(), output_packet(), output_segment_list(), packet_after_outpoint(), parse_adaptation_sets(), parse_chunks(), parse_h264_sdp_line(), parse_packet(), parse_sdp_line(), parse_variant_stream_mapstring(), pmt_cb(), prepare_input_packet(), probe_file(), process_input(), pulse_write_frame(), pulse_write_header(), pulse_write_packet(), put_system_header(), r3d_read_packet(), r3d_read_rdvo(), r3d_read_reda(), r3d_read_redv(), r3d_seek(), rdt_parse_sdp_line(), read_dst_frame(), read_frame(), read_frame_internal(), read_gab2_sub(), read_header(), read_kuki_chunk(), read_odml_index(), read_packet(), read_packet_vs(), read_pakt_chunk(), read_part_of_packet(), read_seek(), read_seek_vs(), read_thread(), read_xing_toc(), real_seek(), redspark_read_packet(), remove_decoded_packets(), reopen_demux_for_component(), report_new_stream(), rfc4175_parse_sdp_line(), rl2_read_header(), rl2_read_packet(), rl2_read_seek(), rm_read_close(), rm_read_dts(), rm_read_index(), rm_read_packet(), rm_sync(), rm_write_header(), rm_write_packet(), roq_write_header(), rpl_read_packet(), rsd_read_packet(), rso_write_header(), rtp_mpegts_write_header(), rtp_mpegts_write_packet(), rtp_send_ilbc(), rtp_write_header(), rtp_write_packet(), rtsp_read_packet(), rtsp_read_play(), rtsp_read_seek(), sap_fetch_packet(), sap_read_header(), sap_write_close(), sap_write_header(), sap_write_packet(), sbg_read_packet(), sbg_read_seek2(), scc_write_header(), sdl2_write_header(), sdl2_write_packet(), seek_frame_generic(), seek_frame_internal(), seek_test(), seg_check_bitstream(), seg_init(), seg_write_header(), seg_write_packet(), segment_end(), segment_mux_init(), select_reference_stream(), set_disposition_bits(), set_spdif(), setup_find_stream_info_opts(), skeleton_header(), smjpeg_write_header(), smjpeg_write_packet(), sox_write_header(), sox_write_trailer(), spdif_write_header(), speex_header(), srt_write_header(), stream_component_close(), stream_component_open(), stream_cycle_channel(), sub2video_prepare(), subsegment_alignment(), sup_write_header(), svag_read_packet(), swf_read_packet(), swf_write_header(), swf_write_packet(), swf_write_trailer(), tee_write_packet(), theora_header(), theora_packet(), threedostr_read_packet(), tmcd_is_referenced(), try_seek(), tta_init(), tta_read_packet(), tta_read_seek(), tta_write_header(), update_dts_from_pts(), update_frag_index(), update_initial_timestamps(), update_odml_entry(), update_stream_avctx(), update_stream_extradata(), update_stream_timings(), update_streams_from_subdemuxer(), update_variant_stream_info(), update_wrap_reference(), v4l2_read_packet(), v4l2_set_parameters(), vag_read_packet(), vc1t_read_packet(), vc1test_write_header(), video_decode(), video_decode_example(), voc_read_packet(), voc_read_seek(), voc_write_header(), voc_write_packet(), vorbis_header(), vorbis_packet(), vorbis_update_metadata(), vp8_header(), vp8_packet(), vpk_read_packet(), vqf_read_seek(), webm_chunk_write_header(), webm_chunk_write_packet(), webm_chunk_write_trailer(), webm_clusters_start_with_keyframe(), webm_dash_manifest_compute_bandwidth(), webm_dash_manifest_cues(), webm_dash_manifest_read_header(), webp_write_header(), webvtt_write_header(), write_abst(), write_adaptation_set(), write_frame(), write_header(), write_headers(), write_image_header(), write_manifest(), write_odml_master(), write_packet(), write_skip_frames(), write_streaminfo(), write_table_entries_attrib(), write_table_redirector_legacy_attrib(), write_timestamp(), write_trailer(), wsaud_read_packet(), wv_write_header(), xa_read_packet(), xiph_parse_sdp_line(), xmv_process_packet_header(), xv_write_header(), xv_write_packet(), xvag_read_packet(), xwma_read_packet(), yuv4_generate_header(), yuv4_write_header(), and yuv4_write_packet().

char* AVFormatContext::url

input or output URL.

Unlike the old filename field, this field has no length restriction.

• demuxing: set by avformat_open_input(), initialized to an empty string if url parameter was NULL in avformat_open_input().
• muxing: may be set by the caller before calling avformat_write_header() (or avformat_init_output() if that is called first) to a string which is freeable by av_free(). Set to an empty string if it was NULL in avformat_init_output().

Freed by libavformat in avformat_free_context().

Definition at line 1447 of file avformat.h.

Referenced by add_file(), assert_file_overwrite(), audio_read_header(), audio_write_header(), avformat_alloc_output_context2(), avformat_free_context(), avformat_open_input(), caca_write_header(), check_decode_result(), check_init_output_file(), choose_encoder(), dash_flush(), dash_init(), dash_read_header(), dash_write_packet(), dash_write_trailer(), decklink_setup_video(), do_encrypt(), fbdev_read_header(), fbdev_write_header(), ff_configure_buffers_for_index(), ff_decklink_list_formats(), ff_decklink_read_header(), ff_decklink_write_header(), ff_format_set_url(), ff_img_read_header(), ff_rtsp_setup_output_streams(), fifo_init(), fifo_thread_write_header(), gdigrab_read_header(), get_chunk_filename(), grab_read_header(), gxf_write_material_data_section(), hds_flush(), hds_write_header(), hds_write_trailer(), hls_append_segment(), hls_delete_old_segments(), hls_init(), hls_mux_init(), hls_read_header(), hls_rename_temp_file(), hls_start(), hls_window(), hls_write_packet(), hls_write_trailer(), iec61883_read_header(), init_muxer(), io_open_default(), is_realtime(), ism_write_header(), ism_write_trailer(), lavfi_read_header(), log_slave(), mov_find_codec_tag(), mov_read_trak(), mpegts_init(), ndi_read_header(), ndi_write_header(), nested_io_open(), open_output_file(), opengl_write_header(), parse_device_name(), print_final_stats(), process_input(), pulse_read_header(), pulse_write_header(), read_header(), read_header_vs(), read_thread(), refresh_manifest(), resetup_tcp(), rtsp_listen(), sap_read_header(), sap_write_header(), sdl2_write_header(), seg_init(), seg_write_header(), seg_write_packet(), segment_end(), segment_start(), set_http_options(), set_segment_filename(), shift_data(), show_format(), sls_flag_file_rename(), sls_flag_use_localtime_filename(), sls_flags_filename_process(), start_jack(), tee_write_header(), transcode(), update_master_pl_info(), v4l2_read_header(), vfw_read_header(), webm_chunk_write_header(), webm_dash_manifest_read_header(), write_abst(), write_header(), write_manifest(), write_packet(), xcbgrab_read_header(), and xv_write_header().

int64_t AVFormatContext::start_time

Position of the first frame of the component, in AV_TIME_BASE fractional seconds.

NEVER set this value directly: It is deduced from the AVStream values.

Demuxing only, set by libavformat.

Definition at line 1456 of file avformat.h.

Referenced by av_dump_format(), avformat_open_input(), compute_chapters_end(), configure_input_audio_filter(), configure_input_video_filter(), do_streamcopy(), dxa_read_header(), estimate_timings(), event_loop(), fill_all_stream_timings(), flv_read_header(), movie_common_init(), open_file(), open_input_file(), process_input(), read_header(), read_packets(), read_thread(), rewind_file(), seek_to_start(), show_format(), and update_stream_timings().

int64_t AVFormatContext::duration

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.

Demuxing only, set by libavformat.

Definition at line 1466 of file avformat.h.

Referenced by amf_parse_object(), av_dump_format(), avformat_open_input(), avi_read_header(), avi_write_header(), compute_chapters_end(), concat_read_header(), dash_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(), has_duration(), hls_read_header(), hls_read_seek(), matroska_read_header(), mkv_write_header(), mov_read_mvhd(), mov_read_trex(), ogg_get_length(), open_input_file(), open_next_file(), open_output_file(), process_command(), read_header(), rm_read_header(), show_format(), update_stream_timings(), vivo_read_header(), and write_metadata().

int64_t AVFormatContext::bit_rate

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 1473 of file avformat.h.

Referenced by av_dump_format(), dss_723_1_read_packet(), dss_sp_read_packet(), 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().

unsigned int AVFormatContext::packet_size

Definition at line 1475 of file avformat.h.

Referenced by asf_build_simple_index(), asf_get_packet(), asf_parse_packet(), asf_read_file_properties(), asf_read_pts(), asf_read_seek(), asf_write_header(), asf_write_header1(), flush_packet(), mpeg_mux_init(), qcp_read_header(), qcp_read_packet(), rawvideo_read_header(), rawvideo_read_packet(), rtp_write_header(), ser_read_header(), ser_read_packet(), v210_read_header(), v210_read_packet(), yuv4_read_header(), yuv4_read_packet(), and yuv4_read_seek().

int AVFormatContext::max_delay

Definition at line 1476 of file avformat.h.

Referenced by chunk_mux_init(), ff_rtp_chain_mux_open(), ff_rtp_send_aac(), ff_rtp_send_amr(), ff_rtp_send_xiph(), ff_rtsp_open_transport_ctx(), fifo_mux_init(), hls_mux_init(), mpeg_mux_init(), mpegts_init(), mpegts_write_packet_internal(), mpegts_write_pes(), open_output_file(), output_packet(), rtp_mpegts_write_header(), rtp_send_ilbc(), sap_read_header(), and segment_mux_init().

int AVFormatContext::flags

Flags modifying the (de)muxer behaviour.

A combination of AVFMT_FLAG_*. Set by the user before avformat_open_input() / avformat_write_header().

Definition at line 1482 of file avformat.h.

Referenced by android_camera_read_packet(), av_read_frame(), avformat_close_input(), avformat_find_stream_info(), avformat_open_input(), avi_read_header(), compute_pkt_fields(), dash_init(), device_open(), do_packet_auto_bsf(), dshow_read_packet(), fbdev_read_header(), fbdev_read_packet(), ff_framehash_write_header(), ff_img_read_header(), ff_interleave_packet_per_dts(), ff_read_packet(), ff_rtp_chain_mux_open(), fifo_mux_init(), flac_finish_header(), flac_read_header(), flac_seek(), flush_if_needed(), gdigrab_read_packet(), gxf_read_index(), hds_write_header(), hls_read_header(), hls_start(), hls_window(), hls_write_packet(), hls_write_trailer(), init_fps(), init_input(), init_muxer(), lrc_write_header(), main(), matroska_add_index_entries(), matroska_parse_cues(), mkv_write_attachments(), mkv_write_header(), mov_init(), mov_read_default(), mov_write_ilst_tag(), mov_write_isml_manifest(), mov_write_sv3d_tag(), mov_write_uuidusmt_tag(), mp3_seek(), mxf_write_header(), mxf_write_identification(), ogg_init(), open_file(), open_input_file(), open_output_file(), open_slave(), open_url(), parse_keyframes_index(), pulse_write_header(), put_flac_codecpriv(), read_frame_internal(), read_packet(), read_thread(), read_xing_toc(), reopen_demux_for_component(), rm_read_header(), rtp_write_header(), segment_mux_init(), store_version(), vfw_read_packet(), write_header(), and write_sm_data().

int64_t AVFormatContext::probesize

Maximum size of the data read from input for determining the input container format.

Demuxing only, set by the caller before avformat_open_input().

Definition at line 1517 of file avformat.h.

Referenced by adts_aac_read_header(), avformat_find_stream_info(), lavfi_read_header(), mpegts_read_header(), and reopen_demux_for_component().

int64_t AVFormatContext::max_analyze_duration

Maximum duration (in AV_TIME_BASE units) of the data read from input in avformat_find_stream_info().

Demuxing only, set by the caller before avformat_find_stream_info(). Can be set to 0 to let avformat choose using a heuristic.

Definition at line 1525 of file avformat.h.

Referenced by avformat_find_stream_info(), and reopen_demux_for_component().

const uint8_t* AVFormatContext::key

Definition at line 1527 of file avformat.h.

Referenced by asf_parse_packet(), asf_read_multiple_payload(), asf_read_single_payload(), decrypt_init(), and mxf_decrypt_triplet().

int AVFormatContext::keylen

Definition at line 1528 of file avformat.h.

Referenced by asf_parse_packet(), asf_read_header(), asf_read_multiple_payload(), asf_read_single_payload(), decrypt_init(), and mxf_decrypt_triplet().

unsigned int AVFormatContext::nb_programs

Definition at line 1530 of file avformat.h.

Referenced by av_dump_format(), av_find_program_from_stream(), av_new_program(), av_program_add_stream_index(), avformat_free_context(), avformat_match_stream_specifier(), clear_avprogram(), discard_pid(), ff_metadata_conv_ctx(), mpegts_init(), mpegts_write_pmt(), open_output_file(), pat_cb(), playlist_needed(), show_format(), show_programs(), transcode_init(), update_av_program_info(), and update_stream_timings().

AVProgram** AVFormatContext::programs

Definition at line 1531 of file avformat.h.

Referenced by av_dump_format(), av_find_program_from_stream(), av_new_program(), av_program_add_stream_index(), avformat_free_context(), avformat_match_stream_specifier(), clear_avprogram(), discard_pid(), ff_metadata_conv_ctx(), mpegts_init(), open_output_file(), pat_cb(), playlist_needed(), show_programs(), transcode_init(), update_av_program_info(), and update_stream_timings().

enum AVCodecID AVFormatContext::video_codec_id

Forced video codec_id.

Demuxing: Set by user.

Definition at line 1537 of file avformat.h.

Referenced by device_try_init(), dshow_read_header(), ff_img_read_header(), flv_read_packet(), force_codec_ids(), mmap_read_frame(), mov_skip_multiple_stsd(), open_input_file(), and v4l2_read_header().

enum AVCodecID AVFormatContext::audio_codec_id

Forced audio codec_id.

Demuxing: Set by user.

Definition at line 1543 of file avformat.h.

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

enum AVCodecID AVFormatContext::subtitle_codec_id

Forced subtitle codec_id.

Demuxing: Set by user.

Definition at line 1549 of file avformat.h.

Referenced by force_codec_ids(), and open_input_file().

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 1561 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 1567 of file avformat.h.

Referenced by shall_we_drop().

unsigned int AVFormatContext::nb_chapters

Number of chapters in AVChapter array.

When muxing, chapters are normally written in the file header, so nb_chapters should normally be initialized before write_header is called. Some muxers (e.g. mov and mkv) can also write chapters in the trailer. To write chapters in the trailer, nb_chapters must be zero when write_header is called and non-zero when write_trailer is called.

• muxing: set by user
• demuxing: set by libavformat

Definition at line 1580 of file avformat.h.

Referenced by aa_read_header(), aa_read_seek(), asf_write_header1(), asf_write_markers(), av_dump_format(), avformat_free_context(), avpriv_new_chapter(), compute_chapters_end(), copy_chapters(), event_loop(), ff_id3v2_write_metadata(), ff_metadata_conv_ctx(), mkv_write_chapters(), mkv_write_header(), mkv_write_tags(), mov_create_chapter_track(), mov_init(), mov_write_chpl_tag(), mov_write_header(), mov_write_trailer(), mov_write_udta_tag(), nut_write_header(), ogm_chapter(), open_output_file(), parse_forced_key_frames(), read_chapter(), read_header(), seek_chapter(), show_chapters(), write_headers(), and write_trailer().

AVChapter** AVFormatContext::chapters

Definition at line 1581 of file avformat.h.

Referenced by aa_read_seek(), asf_write_markers(), av_dump_format(), avformat_free_context(), avpriv_new_chapter(), compute_chapters_end(), copy_chapters(), ff_metadata_conv_ctx(), mkv_write_chapters(), mkv_write_header(), mkv_write_tags(), mov_create_chapter_track(), mov_write_chpl_tag(), nut_write_header(), ogm_chapter(), open_output_file(), parse_forced_key_frames(), read_chapter(), read_header(), seek_chapter(), show_chapters(), write_chapter(), and write_trailer().

AVDictionary* AVFormatContext::metadata

Metadata that applies to the whole file.

• demuxing: set by libavformat in avformat_open_input()
• muxing: may be set by the caller before avformat_write_header()

Freed by libavformat in avformat_free_context().

Examples:

metadata.c.

Definition at line 1591 of file avformat.h.

Referenced by aa_read_header(), add_meta(), add_metadata(), adts_aac_read_header(), amf_parse_object(), ape_tag_read_field(), asf_read_ext_content(), asf_read_header(), asf_read_metadata(), asf_read_properties(), asf_write_header1(), av_dump_format(), avformat_free_context(), avformat_open_input(), avi_read_header(), avi_read_nikon(), avi_read_tag(), caf_write_header(), chunk_mux_init(), decode_info_header(), dss_read_metadata_date(), dss_read_metadata_string(), dtshd_read_header(), dv_read_timecode(), dv_write_header(), export_orphan_timecode(), ff_ape_write_tag(), ff_decklink_read_packet(), ff_id3v2_parse_priv(), ff_id3v2_read(), ff_id3v2_write_metadata(), ff_metadata_conv_ctx(), ff_parse_creation_time_metadata(), ff_read_riff_info(), ff_riff_write_info(), ff_rm_read_mdpr_codecdata(), ff_sauce_read(), ff_standardize_creation_time(), ff_wms_parse_sdp_a_line(), fifo_mux_init(), flac_finish_header(), flac_init(), flac_read_header(), flv_read_packet(), get_meta(), get_metadata(), get_metadata_duration(), get_metadata_lang(), get_string(), get_tag(), gxf_header(), gxf_write_header(), handle_id3(), hls_mux_init(), hls_read_header(), hls_read_packet(), id3v1_create_tag(), id3v1_set_string(), init_muxer(), lrc_read_header(), lrc_write_header(), main(), matroska_convert_tags(), matroska_read_header(), metadata_obu(), mkv_write_header(), mkv_write_stereo_mode(), mkv_write_tags(), modplug_load_metadata(), mov_init(), mov_metadata_gnre(), mov_metadata_int8_bypass_padding(), mov_metadata_int8_no_padding(), mov_metadata_loci(), mov_metadata_track_or_disc_number(), mov_parse_stsd_audio(), mov_read_custom(), mov_read_ftyp(), mov_read_header(), mov_read_mvhd(), mov_read_udta_string(), mov_read_uuid(), mov_write_3gp_udta_tag(), mov_write_header(), mov_write_int8_metadata(), mov_write_mdta_ilst_tag(), mov_write_mdta_keys_tag(), mov_write_raw_metadata_tag(), mov_write_tmpo_tag(), mov_write_trkn_tag(), mov_write_uuidusmt_tag(), mp3_read_header(), mpc_read_header(), mpegts_init(), mxf_init_timecode(), mxf_parse_structural_metadata(), mxf_write_header(), mxf_write_header_metadata_sets(), mxf_write_package(), nist_read_header(), nsp_read_header(), nsv_parse_NSVf_header(), ogg_init(), open_output_file(), open_slave(), parse_legacy_attrib(), parse_tag(), put_id3v2_tags(), put_meta(), read_frame_internal(), read_header(), read_header_openmpt(), read_info_chunk(), read_string(), read_thread(), read_uint16(), read_uint32(), read_uint64(), read_uint8(), riff_has_valid_tags(), rm_read_metadata(), rpl_read_header(), sap_write_header(), scan_file(), segment_end(), segment_mux_init(), show_format(), smjpeg_read_header(), smjpeg_write_header(), sox_read_header(), sox_write_header(), subviewer_read_header(), var_read_metadata(), vivo_read_header(), vqf_read_header(), wc3_read_header(), write_globalinfo(), write_manifest(), write_metadata(), write_table_entries_attrib(), write_table_redirector_legacy_attrib(), write_trailer(), wsd_read_header(), and wv_read_header().

int64_t AVFormatContext::start_time_realtime

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

That is, pts=0 in the stream was captured at this real world time.

• muxing: Set by the caller before avformat_write_header(). If set to either 0 or AV_NOPTS_VALUE, then the current wall-time will be used.
• demuxing: Set by libavformat. AV_NOPTS_VALUE if unknown. Note that the value may become known after some number of frames have been received.

Definition at line 1604 of file avformat.h.

Referenced by ff_rtp_chain_mux_open(), ff_rtsp_setup_output_streams(), rtp_write_header(), and sap_write_header().

int AVFormatContext::fps_probe_size

The number of frames used for determining the framerate in avformat_find_stream_info().

Demuxing only, set by the caller before avformat_find_stream_info().

Definition at line 1611 of file avformat.h.

Referenced by avformat_find_stream_info().

int AVFormatContext::error_recognition

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

Demuxing only, set by the caller before avformat_open_input().

Definition at line 1618 of file avformat.h.

Referenced by avformat_open_input(), avi_read_header(), do_packet_auto_bsf(), ff_flac_parse_picture(), ff_rm_read_mdpr_codecdata(), flac_finish_header(), matroska_parse_tracks(), matroska_read_header(), mxf_read_header(), nuv_header(), ogg_read_header(), read_header(), tak_read_header(), and tta_read_header().

AVIOInterruptCB AVFormatContext::interrupt_callback

Custom interrupt callbacks for the I/O layer.

demuxing: set by the user before avformat_open_input(). muxing: 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 1629 of file avformat.h.

Referenced by avformat_find_stream_info(), check_init_output_file(), chunk_mux_init(), dash_init(), dash_read_header(), failing_write_packet(), ff_rtp_chain_mux_open(), fifo_mux_init(), hds_write_header(), hls_mux_init(), hls_read_header(), io_open_default(), ism_flush(), ism_seek(), ism_write_header(), lavfi_read_header(), open_file(), open_input_file(), open_output_file(), open_slave(), parse_playlist(), read_thread(), reopen_demux_for_component(), rtsp_listen(), rtsp_read_setup(), sap_read_header(), sap_write_header(), and segment_mux_init().

int AVFormatContext::debug

Flags to enable debugging.

Definition at line 1634 of file avformat.h.

Referenced by av_interleaved_write_frame(), compute_pkt_fields(), mpegps_read_dts(), mpegps_read_packet(), and read_frame_internal().

int64_t AVFormatContext::max_interleave_delta

Maximum buffering duration for interleaving.

To ensure all the streams are interleaved correctly, av_interleaved_write_frame() will wait until it has at least one packet for each stream before actually writing any packets to the output file. When some streams are "sparse" (i.e. there are large gaps between successive packets), this can result in excessive buffering.

This field specifies the maximum difference between the timestamps of the first and the last packet in the muxing queue, above which libavformat will output a packet regardless of whether it has queued a packet for all the streams.

Muxing only, set by the caller before avformat_write_header().

Definition at line 1653 of file avformat.h.

Referenced by asf_write_header(), ff_interleave_packet_per_dts(), and write_packet().

int AVFormatContext::strict_std_compliance

Allow non-standard and experimental extension.

See Also

AVCodecContext.strict_std_compliance

Definition at line 1659 of file avformat.h.

Referenced by dash_init(), ff_put_wav_header(), flv_write_header(), hls_read_header(), mov_get_codec_tag(), mov_init(), mov_read_default(), mov_read_elst(), mov_write_video_tag(), nut_write_header(), rtp_write_header(), validate_codec_tag(), and yuv4_write_header().

int AVFormatContext::event_flags

Flags for the user to detect events happening on the file.

Flags must be cleared by the user once the event has been handled. A combination of AVFMT_EVENT_FLAG_*.

Definition at line 1666 of file avformat.h.

Referenced by amf_parse_object(), decode_info_header(), flac_read_header(), flv_write_packet(), handle_id3(), hls_read_packet(), mov_metadata_gnre(), mov_metadata_int8_bypass_padding(), mov_metadata_int8_no_padding(), mov_metadata_loci(), mov_metadata_track_or_disc_number(), mov_read_udta_string(), and read_frame_internal().

int AVFormatContext::max_ts_probe

Maximum number of packets to read while waiting for the first timestamp.

Decoding only.

Definition at line 1673 of file avformat.h.

Referenced by avformat_find_stream_info().

int AVFormatContext::avoid_negative_ts

Avoid negative timestamps during muxing.

Any value of the AVFMT_AVOID_NEG_TS_* constants. Note, this only works when using av_interleaved_write_frame. (interleave_packet_per_dts is in use)

• muxing: Set by user
• demuxing: unused

Definition at line 1682 of file avformat.h.

Referenced by asf_write_header(), dash_init(), dash_write_packet(), ff_mov_write_packet(), init_pts(), mkv_init(), mov_init(), nut_write_header(), seg_init(), and write_packet().

int AVFormatContext::ts_id

Transport stream id.

This will be moved into demuxer private options. Thus no API/ABI compatibility

Definition at line 1691 of file avformat.h.

Referenced by pat_cb().

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
• decoding: unused

Definition at line 1699 of file avformat.h.

Referenced by interleave_compare_dts().

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
• decoding: unused

Definition at line 1707 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
• decoding: unused

Definition at line 1715 of file avformat.h.

Referenced by ff_interleave_add_packet().

int AVFormatContext::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.

• encoding: unused
• decoding: Set by user

Definition at line 1723 of file avformat.h.

Referenced by ff_read_packet().

int AVFormatContext::avio_flags

avio flags, used to force AVIO_FLAG_DIRECT.

• encoding: unused
• decoding: Set by user

Definition at line 1730 of file avformat.h.

Referenced by init_input().

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

Definition at line 1738 of file avformat.h.

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

int64_t AVFormatContext::skip_initial_bytes

Skip initial bytes when opening stream.

• encoding: unused
• decoding: Set by user

Definition at line 1745 of file avformat.h.

Referenced by avformat_open_input().

unsigned int AVFormatContext::correct_ts_overflow

Correct single timestamp overflows.

• encoding: unused
• decoding: Set by user

Definition at line 1752 of file avformat.h.

Referenced by update_wrap_reference().

int AVFormatContext::seek2any

Force seeking to any (also non key) frames.

• encoding: unused
• decoding: Set by user

Definition at line 1759 of file avformat.h.

Referenced by avformat_seek_file().

int AVFormatContext::flush_packets

Flush the I/O context after each packet.

• encoding: Set by user
• decoding: unused

Definition at line 1766 of file avformat.h.

Referenced by flush_if_needed().

int AVFormatContext::probe_score

format probing score.

The maximal score is AVPROBE_SCORE_MAX, its set when the demuxer probes the format.

• encoding: unused
• decoding: set by avformat, read by user

Definition at line 1775 of file avformat.h.

Referenced by avformat_open_input(), and show_format().

int AVFormatContext::format_probesize

number of bytes to read maximally to identify format.

• encoding: unused
• decoding: set by user

Definition at line 1782 of file avformat.h.

Referenced by init_input().

char* AVFormatContext::codec_whitelist

',' separated list of allowed decoders.

If NULL then all are allowed

• encoding: unused
• decoding: set by user

Definition at line 1790 of file avformat.h.

Referenced by avformat_find_stream_info(), ff_copy_whiteblacklists(), and try_decode_frame().

char* AVFormatContext::format_whitelist

',' separated list of allowed demuxers.

If NULL then all are allowed

• encoding: unused
• decoding: set by user

Definition at line 1798 of file avformat.h.

Referenced by av_demuxer_open(), avformat_open_input(), and ff_copy_whiteblacklists().

AVFormatInternal* AVFormatContext::internal

An opaque field for libavformat internal usage.

Must not be accessed in any way by callers.

Definition at line 1804 of file avformat.h.

Referenced by asf_build_simple_index(), asf_read_pts(), asf_read_seek(), av_demuxer_open(), av_format_inject_global_side_data(), av_hwframe_ctx_alloc(), av_read_frame(), av_write_trailer(), avformat_alloc_context(), avformat_find_stream_info(), avformat_free_context(), avformat_init_output(), avformat_new_stream(), avformat_open_input(), avformat_queue_attached_pictures(), avformat_write_header(), codec2_read_header(), codec2raw_read_header(), compute_pkt_fields(), dsf_read_header(), dsf_read_packet(), dv_frame_offset(), estimate_timings_from_bit_rate(), ff_gen_search(), ff_interleave_add_packet(), ff_interleave_packet_per_dts(), ff_interleaved_peek(), ff_pcm_read_seek(), ff_read_frame_flush(), ff_read_packet(), flush_packet_queue(), fsb_read_header(), get_next_pkt(), init_muxer(), mkv_init(), mp3_read_header(), mp3_seek(), mpegts_read_header(), mtv_read_packet(), mxf_interleave_get_packet(), nut_read_header(), ogg_get_length(), ogg_packet(), parse_packet(), probe_codec(), r3d_read_header(), read_frame_internal(), read_header(), seek_frame_byte(), seek_frame_generic(), ser_read_packet(), update_initial_durations(), update_initial_timestamps(), vqf_read_seek(), write_packet(), yop_read_seek(), yuv4_read_header(), yuv4_read_packet(), and yuv4_read_seek().

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 1812 of file avformat.h.

Referenced by ogg_read_packet(), and seek_frame_byte().

AVCodec* AVFormatContext::video_codec

Forced video codec.

This allows forcing a specific decoder, even when there are multiple with the same codec_id. Demuxing: Set by user

Definition at line 1820 of file avformat.h.

Referenced by find_decoder(), and open_input_file().

AVCodec* AVFormatContext::audio_codec

Forced audio codec.

This allows forcing a specific decoder, even when there are multiple with the same codec_id. Demuxing: Set by user

Definition at line 1828 of file avformat.h.

Referenced by find_decoder(), and open_input_file().

AVCodec* AVFormatContext::subtitle_codec

Forced subtitle codec.

This allows forcing a specific decoder, even when there are multiple with the same codec_id. Demuxing: Set by user

Definition at line 1836 of file avformat.h.

Referenced by find_decoder(), and open_input_file().

AVCodec* AVFormatContext::data_codec

Forced data codec.

This allows forcing a specific decoder, even when there are multiple with the same codec_id. Demuxing: Set by user

Definition at line 1844 of file avformat.h.

Referenced by open_input_file().

int AVFormatContext::metadata_header_padding

Number of bytes to be written as padding in a metadata header.

Demuxing: Unused. Muxing: Set by user via av_format_set_metadata_header_padding.

Definition at line 1851 of file avformat.h.

Referenced by ff_id3v2_write_simple(), flac_finish_header(), mkv_write_header(), mp3_queue_flush(), mp3_write_header(), and put_id3v2_tags().

void* AVFormatContext::opaque

User data.

This is a place for some private data of the user.

Definition at line 1857 of file avformat.h.

Referenced by dash_init(), fifo_mux_init(), hls_mux_init(), open_slave(), and segment_mux_init().

av_format_control_message AVFormatContext::control_message_cb

Callback used by devices to communicate with application.

Definition at line 1862 of file avformat.h.

Referenced by avdevice_dev_to_app_control_message().

int64_t AVFormatContext::output_ts_offset

Output timestamp offset, in microseconds.

Muxing: set by user

Definition at line 1868 of file avformat.h.

Referenced by ff_interleaved_peek(), and write_packet().

uint8_t* AVFormatContext::dump_separator

dump format separator.

can be ", " or "\n " or anything else

• muxing: Set by user.
• demuxing: Set by user.

Definition at line 1876 of file avformat.h.

Referenced by dump_stream_format().

enum AVCodecID AVFormatContext::data_codec_id

Forced Data codec_id.

Demuxing: Set by user.

Definition at line 1882 of file avformat.h.

Referenced by force_codec_ids(), and open_input_file().

char* AVFormatContext::protocol_whitelist

',' separated list of allowed protocols.

• encoding: unused
• decoding: set by user

Definition at line 1911 of file avformat.h.

Referenced by avformat_open_input(), ff_copy_whiteblacklists(), ffio_open2_wrapper(), io_open_default(), ism_flush(), ism_seek(), lavfi_read_header(), parse_playlist(), rtsp_listen(), rtsp_read_setup(), sap_read_header(), and sap_write_header().

int(* AVFormatContext::io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)

A callback for opening new IO streams.

Whenever a muxer or a demuxer needs to open an IO stream (typically from avformat_open_input() for demuxers, but for certain formats can happen at other times as well), it will call this callback to obtain an IO context.

Parameters

s	the format context
pb	on success, the newly opened IO context should be returned here
url	the url to open
flags	a combination of AVIO_FLAG_*
options	a dictionary of additional options, with the same semantics as in avio_open2()

Returns

0 on success, a negative AVERROR code on failure

Note

Certain muxers and demuxers do nesting, i.e. they open one or more additional internal format contexts. Thus the AVFormatContext pointer passed to this callback may be different from the one facing the caller. It will, however, have the same 'opaque' field.

Definition at line 1933 of file avformat.h.

Referenced by avformat_get_context_defaults(), chunk_end(), copy_moof(), dash_init(), dashenc_io_open(), do_encrypt(), ff_format_output_open(), ff_img_read_packet(), fifo_mux_init(), find_index_range(), hls_delete_old_segments(), hls_encryption_start(), hls_mux_init(), hls_read_header(), hlsenc_io_open(), init_file(), init_input(), mov_open_dref(), open_slave(), open_url(), parse_fragment(), parse_playlist(), read_header(), reopen_demux_for_component(), seg_init(), seg_write_header(), segment_list_open(), segment_mux_init(), segment_start(), shift_data(), webm_chunk_write_header(), write_abst(), write_manifest(), and write_packet().

void(* AVFormatContext::io_close)(struct AVFormatContext *s, AVIOContext *pb)

A callback for closing the streams opened with AVFormatContext.io_open().

Definition at line 1939 of file avformat.h.

Referenced by avformat_get_context_defaults(), dash_init(), ff_format_io_close(), fifo_mux_init(), hls_mux_init(), open_slave(), and segment_mux_init().

char* AVFormatContext::protocol_blacklist

',' separated list of disallowed protocols.

• encoding: unused
• decoding: set by user

Definition at line 1946 of file avformat.h.

Referenced by avformat_open_input(), ff_copy_whiteblacklists(), ffio_open2_wrapper(), io_open_default(), ism_flush(), ism_seek(), parse_playlist(), rtsp_listen(), rtsp_read_setup(), sap_read_header(), and sap_write_header().

int AVFormatContext::max_streams

The maximum number of streams.

• encoding: unused
• decoding: set by user

Definition at line 1953 of file avformat.h.

Referenced by avformat_new_stream().

int AVFormatContext::skip_estimate_duration_from_pts

Skip duration calcuation in estimate_timings_from_pts.

• encoding: unused
• decoding: set by user

Definition at line 1960 of file avformat.h.

Referenced by estimate_timings_from_pts().

---

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

• libavformat/avformat.h