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	filename [1024]
	input or output filename 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...

int	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...

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...

int64_t	max_analyze_duration
	Maximum duration (in AV_TIME_BASE units) of the data read from input in avformat_find_stream_info(). More...

int64_t	probesize
	Maximum size of the data read from input for determining the input container format. More...

uint8_t *	dump_separator
	dump format separator. More...

enum AVCodecID	data_codec_id
	Forced Data codec_id. More...

int(*	open_cb )(struct AVFormatContext s, AVIOContext p, const char url, int flags, const AVIOInterruptCB int_cb, AVDictionary *options)
	Called to open further IO contexts when needed for demuxing. 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.

Examples:: avio_reading.c, demuxing_decoding.c, filtering_audio.c, filtering_video.c, metadata.c, muxing.c, qsvdec.c, remuxing.c, transcode_aac.c, and transcoding.c.

Definition at line 1273 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 1278 of file avformat.h.

Referenced by 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 1285 of file avformat.h.

Referenced by adts_aac_read_header(), adx_read_header(), av_demuxer_open(), av_dump_format(), av_read_frame(), av_read_pause(), av_read_play(), 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_seek_frame_binary(), format_child_next(), format_to_name(), get_category(), gsm_read_header(), init_input(), is_realtime(), loas_read_header(), mpegts_read_header(), open_input_file(), open_input_stream(), pcm_read_header(), process_input(), rawvideo_read_header(), read_frame_internal(), read_header(), read_thread(), seek_frame_generic(), seek_frame_internal(), show_format(), show_stream(), and stream_component_open().

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 1292 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_write_header(), build_feed_streams(), choose_encoder(), chunk_end(), chunk_mux_init(), close_connection(), compute_pkt_fields2(), dash_write_header(), do_video_out(), dump_stream_format(), 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_encoders(), force_one_stream(), format_child_next(), format_to_name(), hds_write_header(), hls_mux_init(), hls_start(), hls_write_packet(), http_prepare_data(), init_muxer(), interleave_packet(), ism_write_header(), log_slave(), main(), mkv_write_header(), mov_write_header(), mpeg_mux_init(), mpegts_write_header(), mxf_parse_dnxhd_frame(), mxf_parse_dv_frame(), mxf_parse_mpeg2_frame(), mxf_write_common_fields(), mxf_write_footer(), 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(), open_slave(), prepare_sdp_description(), rtp_mpegts_write_header(), rtp_new_av_stream(), segment_mux_init(), segment_start(), swf_write_header(), tee_write_trailer(), transcode_init(), validate_codec_tag(), webm_chunk_write_header(), webm_chunk_write_trailer(), write_frame(), write_header(), write_packet(), and write_video_frame().

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 1301 of file avformat.h.

Referenced by aa_read_close(), aa_read_header(), aa_read_packet(), add_audio_device(), add_file(), add_video_device(), adjust_write_index(), 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(), 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(), 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_free_context(), avformat_open_input(), 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(), 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(), 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_feed_streams(), build_frame_code(), caca_write_header(), caca_write_packet(), caca_write_trailer(), caf_write_header(), caf_write_packet(), caf_write_trailer(), calculate_bitrate(), callback(), cdata_read_header(), cdata_read_packet(), cdxl_read_header(), cdxl_read_packet(), celt_header(), check_sessionid(), chunk_end(), chunk_mux_init(), chunk_start(), cin_read_header(), cin_read_packet(), cine_read_packet(), cine_read_seek(), close_connection(), close_slaves(), compute_display_area(), compute_moov_size(), compute_overlay_rect(), compute_sidx_size(), concat_read_close(), concat_read_header(), concat_read_packet(), concat_seek(), configure_video_device(), convert_timestamp(), crc_write_header(), crc_write_packet(), crc_write_trailer(), create_stream(), create_subcc_packet(), create_subcc_streams(), dash_flush(), dash_free(), dash_write_header(), dash_write_packet(), dash_write_trailer(), dc1394_read_common(), decklink_input_callback::decklink_input_callback(), decklink_setup_audio(), decklink_setup_video(), decklink_start_input(), decklink_write_audio_packet(), decklink_write_video_packet(), decrypt_init(), detect_stream_specific(), detect_unknown_subobject(), device_init(), device_open(), dirac_gptopts(), dirac_header(), 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(), dv1394_close(), dv1394_read_header(), dv1394_read_packet(), 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(), event_thread(), 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_open(), ff_alsa_xrun_recover(), ff_decklink_list_formats(), ff_decklink_read_close(), ff_decklink_read_header(), ff_decklink_read_packet(), 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_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(), ffm2_read_header(), ffm_is_avail_data(), ffm_read_data(), ffm_read_header(), ffm_read_packet(), ffm_seek(), ffm_seek1(), ffm_set_write_index(), ffm_write_data(), ffm_write_header(), ffm_write_packet(), ffm_write_trailer(), film_read_close(), film_read_header(), film_read_packet(), find_header_idx(), find_stream(), finish_chunk(), finish_chunk_noindex(), finish_file(), flac_header(), flac_write_header(), flac_write_packet(), flac_write_trailer(), flic_read_header(), flic_read_packet(), flush(), flush_buffered(), flush_packet(), flv_read_close(), flv_read_packet(), flv_read_seek(), flv_write_header(), flv_write_packet(), flv_write_trailer(), format_child_next(), fourxm_read_close(), fourxm_read_header(), fourxm_read_packet(), free_adaptation_sets(), frm_read_packet(), g729_read_header(), gdigrab_read_close(), gdigrab_read_header(), gdigrab_read_packet(), get_aiff_header(), get_audio_config(), get_chunk_filename(), get_cue_desc(), get_moov_size(), get_packet_header(), get_riff(), get_sidx_size(), get_system_header_size(), get_tag(), get_vcd_padding_size(), get_video_config(), 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_mux_init(), hls_read_header(), hls_read_packet(), hls_read_seek(), hls_start(), hls_window(), hls_write_header(), hls_write_packet(), hls_write_trailer(), hnm_read_close(), hnm_read_header(), hnm_read_packet(), 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(), 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(), jacosub_read_close(), jacosub_read_header(), jacosub_read_packet(), jacosub_read_seek(), kset(), latm_write_frame_header(), latm_write_header(), latm_write_packet(), lavfi_read_close(), lavfi_read_header(), lavfi_read_packet(), libAVMemInputPin_Receive(), libquvi_close(), libquvi_read_header(), libquvi_read_packet(), libquvi_read_seek(), list_formats(), list_standards(), load_metadata(), lrc_read_close(), lrc_read_header(), lrc_read_packet(), lrc_read_seek(), lxf_read_header(), lxf_read_packet(), match_streams(), match_streams_exact_id(), match_streams_one_to_one(), matroska_convert_tags(), matroska_parse_tracks(), matroska_read_close(), matroska_read_header(), matroska_read_packet(), matroska_read_seek(), md5_finish(), microdvd_read_close(), microdvd_read_header(), microdvd_read_packet(), microdvd_read_seek(), mkv_flush_dynbuf(), mkv_start_new_cluster(), mkv_write_attachments(), mkv_write_block(), mkv_write_chapters(), 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(), 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_read_chapters(), mov_read_close(), mov_read_header(), mov_read_packet(), mov_read_seek(), mov_write_ftyp_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_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_get_dts(), mpegts_get_pcr(), 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_end(), mpegts_write_header(), mpegts_write_packet_internal(), mpegts_write_pat(), mpegts_write_pes(), mpegts_write_pmt(), mpegts_write_sdt(), 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_decrypt_triplet(), mxf_gen_umid(), mxf_handle_small_eubc(), 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_packet_old(), mxf_read_random_index_pack(), mxf_read_seek(), mxf_write_common_fields(), mxf_write_d10_audio_packet(), mxf_write_d10_video_packet(), mxf_write_essence_container_refs(), mxf_write_footer(), mxf_write_generic_desc(), mxf_write_generic_sound_common(), mxf_write_header(), 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_random_index_pack(), mxf_write_sequence(), 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(), 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_seek(), nut_read_timestamp(), 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_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_header(), ogg_write_pages(), ogm_dshow_header(), ogm_header(), ogm_packet(), old_dirac_gptopts(), old_dirac_header(), old_flac_header(), oma_read_header(), oma_read_packet(), oma_read_seek(), open_file(), open_input(), open_next_file(), 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(), paint_mouse_pointer(), parse_adaptation_sets(), parse_audio_var(), parse_chunks(), parse_command_line(), parse_device_name(), parse_global_var(), parse_keyframes_index(), parse_media_type(), parse_videoinfoheader2(), pcm_read_header(), pixfmt_from_pixmap_format(), pjs_read_close(), pjs_read_header(), pjs_read_packet(), pjs_read_seek(), pmp_close(), pmp_header(), pmp_packet(), pmp_seek(), 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(), qtkit_close(), qtkit_read_header(), qtkit_read_packet(), r3d_close(), r3d_read_header(), r3d_read_rdvo(), r3d_read_reos(), r3d_seek(), raw_read_packet(), rawvideo_read_header(), read16(), read32(), read_braindead_odml_indx(), read_close(), read_close_gme(), read_data(), read_desc_chunk(), read_header(), read_header_gme(), read_line(), read_packet(), read_packet_gme(), read_pakt_chunk(), read_part_of_packet(), read_seek(), read_seek_gme(), 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(), reset_packet_state(), resetup_tcp(), 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(), sdl_write_header(), sdl_write_packet(), sdl_write_trailer(), seg_write_header(), seg_write_packet(), seg_write_trailer(), segment_end(), segment_list_open(), segment_mux_init(), segment_start(), select_reference_stream(), send_mode_a(), send_mode_b(), seq_read_close(), seq_read_header(), seq_read_packet(), set_segment_filename(), setup_crossbar_options(), setup_shm(), setup_window(), shall_we_drop(), shift_data(), siff_read_header(), siff_read_packet(), skeleton_header(), skip_to_key(), 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(), 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(), 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_write_header(), tee_write_packet(), tee_write_trailer(), theora_gptopts(), theora_header(), theora_packet(), thp_read_header(), thp_read_packet(), tmv_read_header(), tmv_read_packet(), tmv_read_seek(), try_seek(), tta_read_header(), tta_read_packet(), tta_read_seek(), update_index(), update_odml_entry(), 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(), 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(), vplayer_read_close(), vplayer_read_header(), vplayer_read_packet(), vplayer_read_seek(), vqf_read_header(), vqf_read_packet(), vqf_read_seek(), 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_index(), write_manifest(), write_metadata(), 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(), x11grab_read_close(), x11grab_read_header(), x11grab_read_packet(), 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, and transcoding.c.

Definition at line 1315 of file avformat.h.

Referenced by a64_write_header(), aa_read_header(), aa_read_packet(), add_metadata(), adjust_write_index(), adp_read_header(), adp_read_packet(), adts_aac_read_header(), adts_write_packet(), adx_read_header(), adx_read_packet(), aea_read_header(), aea_read_packet(), afc_read_header(), afc_read_packet(), aiff_read_header(), aiff_read_packet(), aiff_write_header(), aiff_write_packet(), aiff_write_trailer(), amf_parse_object(), amr_read_header(), amr_read_packet(), apc_read_header(), apc_read_packet(), ape_read_header(), ape_read_packet(), ape_read_seek(), ape_tag_read_field(), apng_read_header(), apng_read_packet(), apng_write_header(), apng_write_trailer(), 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_load_index(), avi_read_close(), avi_read_header(), avi_read_idx1(), avi_read_nikon(), avi_read_packet(), avi_read_seek(), avi_read_tag(), avi_sync(), avi_write_counters(), avi_write_header(), avi_write_idx1(), avi_write_ix(), avi_write_packet(), avi_write_trailer(), avr_read_header(), avs_read_audio_packet(), avs_read_header(), avs_read_packet(), avs_read_video_packet(), bfi_read_header(), bfi_read_packet(), bmv_read_packet(), build_feed_streams(), caf_write_header(), caf_write_packet(), caf_write_trailer(), cdata_read_header(), cdata_read_packet(), cdxl_read_header(), cdxl_read_packet(), chunk_end(), chunk_start(), cin_read_header(), cin_read_packet(), cine_read_header(), cine_read_packet(), cine_read_seek(), close_connection(), close_slaves(), concat_read_header(), crc_write_trailer(), dash_flush(), dash_free(), dash_write_header(), daud_packet(), daud_write_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_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(), ffm2_read_header(), ffm_is_avail_data(), ffm_read_data(), ffm_read_header(), ffm_read_packet(), ffm_resync(), ffm_seek1(), ffm_write_header(), ffm_write_header_codec_private_ctx(), ffmpeg_cleanup(), film_read_header(), film_read_packet(), find_and_decode_index(), finish_chunk_noindex(), finish_file(), finished_reading_packet(), flac_read_header(), flac_read_timestamp(), flac_write_header(), flac_write_packet(), flac_write_trailer(), flic_read_header(), flic_read_packet(), flush(), flush_packet(), flv_data_packet(), flv_get_extradata(), flv_read_header(), flv_read_metabody(), flv_read_packet(), flv_read_seek(), flv_set_video_codec(), flv_write_header(), flv_write_packet(), flv_write_trailer(), format_child_next(), fourxm_read_header(), fourxm_read_packet(), framecrc_write_header(), framecrc_write_packet(), free_playlist_list(), frm_read_header(), frm_read_packet(), g723_1_read_packet(), g729_read_packet(), get_aiff_header(), get_dts(), get_meta(), get_metadata(), get_packet_header(), get_tag(), gif_read_ext(), gif_read_header(), gif_read_packet(), gif_write_header(), gif_write_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_packet(), handle_packets(), hds_flush(), hds_free(), hds_write_header(), hls_read_header(), hls_start(), hls_write_packet(), hls_write_trailer(), hnm_read_header(), hnm_read_packet(), http_prepare_data(), http_receive_data(), ico_write_header(), ico_write_packet(), ico_write_trailer(), idcin_read_header(), idcin_read_packet(), idcin_read_seek(), iff_read_header(), iff_read_packet(), ilbc_read_header(), ilbc_read_packet(), ilbc_write_header(), ilbc_write_packet(), ingenient_read_packet(), init_input(), ipmovie_read_header(), ipmovie_read_packet(), ircam_read_header(), ircam_write_header(), is_realtime(), ism_flush(), ism_free(), ism_write_header(), iss_read_header(), iss_read_packet(), ivf_write_header(), ivf_write_packet(), ivf_write_trailer(), 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(), md5_finish(), microdvd_read_header(), microdvd_write_header(), microdvd_write_packet(), mkv_flush_dynbuf(), 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(), 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_read_header(), mov_read_packet(), mov_read_timecode_track(), mov_read_trak(), 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_sync(), mp3_update_xing(), mp3_write_trailer(), mp3_write_xing(), mpc8_handle_chunk(), mpc8_parse_seektable(), mpc8_read_header(), mpc8_read_packet(), mpc8_read_seek(), mpc_read_header(), mpc_read_packet(), mpegps_read_dts(), mpegps_read_header(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_get_dts(), mpegts_get_pcr(), mpegts_insert_null_packet(), mpegts_insert_pcr_only(), mpegts_prefix_m2ts_header(), mpegts_raw_read_packet(), mpegts_read_header(), mpegts_resync(), mpegts_write_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(), msnwc_tcp_read_header(), msnwc_tcp_read_packet(), mtv_read_header(), mtv_read_packet(), mv_read_header(), mv_read_packet(), mv_read_seek(), mxf_decrypt_triplet(), mxf_parse_handle_essence(), mxf_parse_klv(), mxf_read_header(), mxf_read_local_tags(), mxf_read_packet(), mxf_read_packet_old(), mxf_read_random_index_pack(), mxf_read_seek(), mxf_seek_to_previous_partition(), mxf_write_cdci_common(), mxf_write_common_fields(), mxf_write_content_storage(), mxf_write_d10_audio_packet(), mxf_write_d10_video_packet(), mxf_write_essence_container_data(), mxf_write_essence_container_refs(), mxf_write_footer(), mxf_write_generic_desc(), mxf_write_generic_sound_common(), mxf_write_identification(), mxf_write_index_table_segment(), mxf_write_klv_fill(), mxf_write_mpegvideo_desc(), mxf_write_multi_descriptor(), mxf_write_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_wav_common(), mxg_read_packet(), mxg_update_cache(), nc_read_packet(), need_output(), nist_read_header(), nsv_parse_NSVf_header(), nsv_parse_NSVs_header(), nsv_read_chunk(), nsv_read_seek(), nsv_resync(), nut_read_header(), nut_read_packet(), nut_read_timestamp(), nut_write_header(), nut_write_packet(), nut_write_trailer(), nuv_header(), nuv_packet(), nuv_read_dts(), nuv_resync(), ogg_get_length(), ogg_read_page(), ogg_read_timestamp(), ogg_replace_stream(), ogg_reset(), ogg_restore(), ogg_save(), ogg_write_page(), oma_read_header(), oma_read_packet(), oma_read_seek(), oma_write_header(), open_input_stream(), open_output_file(), open_slave(), parse_audio_var(), parse_dsd_diin(), parse_dsd_prop(), parse_global_var(), parse_multipart_header(), parse_video_var(), pjs_read_header(), pmp_header(), pmp_packet(), print_report(), process_audio_header_eacs(), process_audio_header_elements(), process_audio_header_sead(), process_ea_header(), process_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_braindead_odml_indx(), read_chapter(), read_desc_chunk(), read_gab2_sub(), read_header(), read_header_gme(), read_id3(), read_info_chunk(), read_kuki_chunk(), read_packet(), read_pakt_chunk(), read_part_of_packet(), read_seek(), read_table(), read_thread(), read_xing_toc(), realtext_read_header(), reanalyze(), redspark_read_header(), redspark_read_packet(), rl2_read_header(), rl2_read_packet(), rm_read_dts(), rm_read_header(), rm_read_header_old(), rm_read_index(), 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_new_av_stream(), rtp_write_header(), rtp_write_trailer(), rv10_write_header(), sami_read_header(), sap_read_header(), sap_write_close(), save_avio_options(), sbg_read_header(), sdr2_read_header(), sdr2_read_packet(), section_write_packet(), seek_frame_byte(), seek_frame_generic(), seg_write_header(), seg_write_trailer(), segment_end(), segment_start(), seq_read_header(), seq_read_packet(), shift_data(), show_format(), siff_read_header(), siff_read_packet(), smacker_read_header(), smacker_read_packet(), smjpeg_read_header(), smjpeg_read_packet(), smjpeg_write_header(), smjpeg_write_packet(), smjpeg_write_trailer(), smush_read_header(), smush_read_packet(), sol_read_header(), sol_read_packet(), sox_read_header(), sox_write_header(), sox_write_trailer(), spdif_write_packet(), srt_read_header(), srt_write_packet(), stl_read_header(), str_read_header(), str_read_packet(), subviewer1_read_header(), subviewer_read_header(), sup_read_packet(), swf_read_header(), swf_read_packet(), swf_write_header(), swf_write_trailer(), swf_write_video(), tak_read_header(), tedcaptions_read_header(), tee_write_trailer(), thp_read_header(), thp_read_packet(), tmv_read_header(), tmv_read_packet(), tmv_read_seek(), tta_read_header(), tta_read_packet(), tta_read_seek(), txd_read_packet(), update_odml_entry(), update_stream_timings(), var_read_metadata(), vc1t_read_header(), vc1t_read_packet(), vc1test_write_header(), vc1test_write_packet(), vc1test_write_trailer(), vid_read_header(), vid_read_packet(), vivo_get_packet_header(), vivo_read_header(), vivo_read_packet(), vmd_read_header(), vmd_read_packet(), voc_read_header(), voc_read_seek(), voc_write_header(), voc_write_packet(), voc_write_trailer(), vplayer_read_header(), vqf_read_header(), vqf_read_packet(), vqf_read_seek(), wc3_read_header(), wc3_read_packet(), 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_index(), 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(), wsvqa_read_header(), wsvqa_read_packet(), wtvfile_open_sector(), wv_read_header(), wv_read_packet(), wv_write_packet(), wv_write_trailer(), xa_read_header(), xa_read_packet(), xmv_fetch_audio_packet(), xmv_fetch_new_packet(), xmv_fetch_video_packet(), xmv_process_packet_header(), xmv_read_header(), xwma_read_header(), xwma_read_packet(), yop_read_header(), yop_read_packet(), yop_read_seek(), yuv4_read_header(), 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 1322 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(), ipmovie_read_header(), mpegps_read_header(), mpegts_read_header(), read_header(), roq_read_header(), sap_fetch_packet(), sap_read_header(), spdif_read_header(), str_read_header(), swf_read_header(), vid_read_header(), and wsvqa_read_header().

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 1329 of file avformat.h.

Referenced by add_input_streams(), add_metadata_from_renditions(), add_stream(), aiff_write_header(), amf_parse_object(), apng_write_header(), asf_read_packet(), asf_read_pts(), asf_read_stream_properties(), 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_write_trailer(), avformat_find_stream_info(), avformat_free_context(), avformat_match_stream_specifier(), avformat_new_stream(), avformat_queue_attached_pictures(), avformat_seek_file(), avi_read_close(), avi_read_header(), avi_read_idx1(), avi_read_packet(), avi_read_seek(), avi_start_new_riff(), avi_sync(), avi_write_counters(), avi_write_header(), avi_write_idx1(), avi_write_ix(), avi_write_trailer(), avisynth_next_stream(), build_feed_streams(), build_file_streams(), build_frame_code(), caca_write_header(), caf_write_header(), calculate_bitrate(), check_packet(), check_stream_max_drift(), chunk_mux_init(), clean_index(), clear_index_entries(), close_connection(), close_input_file(), close_slaves(), concat_read_header(), configure_output_audio_filter(), copy_metadata(), create_stream(), create_subcc_streams(), dash_flush(), dash_free(), dash_write_header(), dash_write_trailer(), decode_info_header(), do_video_out(), dv_init_mux(), dv_write_header(), enable_tracks(), estimate_timings(), estimate_timings_from_bit_rate(), estimate_timings_from_pts(), export_orphan_timecode(), extract_mpeg4_header(), 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_program_add_stream_index(), 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(), ffm_close(), ffm_read_packet(), ffm_write_header(), fill_all_stream_timings(), film_read_header(), finalize_packet(), find_and_decode_index(), find_stream(), finish_output_stream(), flac_write_header(), flv_data_packet(), flv_read_metabody(), flv_read_packet(), flv_write_header(), flv_write_trailer(), force_one_stream(), framecrc_write_header(), get_duration(), 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_mux_init(), hls_read_header(), hls_read_seek(), hls_write_header(), http_prepare_data(), http_receive_data(), ico_write_header(), id3_has_changed_values(), ilbc_write_header(), init_filters(), init_input_filter(), init_muxer(), init_pts(), ircam_write_header(), ism_flush(), ism_free(), ism_write_header(), ivf_write_header(), libquvi_read_header(), log_slave(), lrc_write_header(), lxf_read_packet(), main(), match_streams(), match_streams_exact_id(), match_streams_one_to_one(), microdvd_write_header(), mkv_write_attachments(), mkv_write_header(), mkv_write_tags(), mkv_write_tracks(), mkv_write_trailer(), mov_find_next_sample(), mov_read_aclr(), mov_read_ares(), mov_read_chan(), mov_read_chapters(), mov_read_close(), mov_read_colr(), mov_read_ctts(), mov_read_custom_2plus(), mov_read_dac3(), mov_read_dec3(), mov_read_dref(), mov_read_dvc1(), mov_read_elst(), mov_read_enda(), mov_read_extradata(), mov_read_fiel(), mov_read_glbl(), mov_read_hdlr(), mov_read_header(), mov_read_mdhd(), mov_read_pasp(), mov_read_sbgp(), mov_read_seek(), mov_read_stco(), mov_read_stps(), mov_read_strf(), mov_read_stsc(), mov_read_stss(), mov_read_stsz(), mov_read_stts(), mov_read_targa_y216(), mov_read_tfdt(), mov_read_tkhd(), mov_read_tmcd(), mov_read_trak(), mov_read_trun(), mov_read_wave(), mov_read_wfex(), mov_write_ftyp_tag(), mov_write_header(), mov_write_identification(), mov_write_moov_tag(), mov_write_single_packet(), movie_common_init(), mpc8_parse_seektable(), mpeg_mux_end(), mpeg_mux_init(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_write_end(), mpegts_write_flush(), mpegts_write_header(), mpegts_write_packet_internal(), mpegts_write_pmt(), mv_read_packet(), mv_read_seek(), mxf_compute_index_tables(), mxf_free(), mxf_get_stream_index(), mxf_handle_missing_index_segment(), mxf_handle_small_eubc(), mxf_interleave_get_packet(), mxf_parse_dnxhd_frame(), mxf_parse_dv_frame(), mxf_read_close(), mxf_read_packet(), mxf_read_seek(), mxf_write_header(), mxf_write_header_metadata_sets(), mxf_write_index_table_segment(), mxf_write_multi_descriptor(), mxf_write_package(), mxf_write_partition(), need_output(), new_output_stream(), nsv_parse_NSVs_header(), nsv_read_chunk(), nsv_read_header(), nut_read_header(), nut_write_header(), nut_write_packet(), nut_write_trailer(), ogg_write_header(), ogg_write_packet(), ogg_write_trailer(), open_input_file(), open_output_file(), open_slave(), opengl_write_header(), output_packet(), pmt_cb(), prepare_sdp_description(), print_final_stats(), probe_file(), process_input(), process_ipmovie_chunk(), pulse_write_header(), put_system_header(), qt_rtp_parse_packet(), r3d_read_packet(), rdt_parse_sdp_line(), read_braindead_odml_indx(), read_data(), read_ffserver_streams(), read_frame_internal(), read_header(), read_interval_packets(), read_packet(), read_seek(), read_thread(), real_seek(), recheck_discard_flags(), remove_decoded_packets(), rl2_read_packet(), rl2_read_seek(), rm_read_close(), rm_read_index(), rm_sync(), rm_write_header(), rm_write_trailer(), roq_write_header(), rpl_read_packet(), rtp_mpegts_write_header(), rtp_new_av_stream(), rtp_write_header(), rtsp_read_header(), rtsp_read_packet(), rv10_write_header(), sap_fetch_packet(), sap_read_header(), sap_write_close(), sap_write_header(), sdl_write_header(), seg_write_header(), segment_mux_init(), select_reference_stream(), set_disposition_bits(), setup_find_stream_info_opts(), show_format(), show_streams(), smjpeg_write_header(), srt_write_header(), stream_component_close(), stream_component_open(), stream_cycle_channel(), sub2video_prepare(), swf_read_packet(), swf_write_header(), swf_write_trailer(), tee_write_header(), tmcd_is_referenced(), transcode_init(), try_seek(), update_stream_timings(), update_wrap_reference(), voc_write_header(), webm_chunk_write_header(), webm_chunk_write_trailer(), webp_write_header(), 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, muxing.c, qsvdec.c, remuxing.c, and transcoding.c.

Definition at line 1341 of file avformat.h.

Referenced by a64_write_header(), add_input_streams(), add_metadata_from_renditions(), adts_write_header(), adx_read_header(), adx_read_packet(), aea_read_packet(), aiff_read_packet(), aiff_write_header(), aiff_write_packet(), aiff_write_trailer(), 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_queue_attached_pictures(), avformat_seek_file(), avi_read_close(), avi_read_header(), avi_read_idx1(), avi_read_packet(), avi_read_seek(), avi_start_new_riff(), avi_sync(), avi_write_counters(), avi_write_header(), avi_write_idx1(), avi_write_ix(), avi_write_packet(), avi_write_trailer(), avisynth_next_stream(), avisynth_read_seek(), bitstream_switching(), build_feed_streams(), build_file_streams(), 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(), chunk_mux_init(), cine_read_packet(), clean_index(), clear_index_entries(), close_connection(), close_input_file(), compute_display_area(), compute_overlay_rect(), concat_read_header(), concat_read_packet(), configure_output_audio_filter(), copy_metadata(), create_stream(), dash_flush(), dash_write_header(), dash_write_packet(), dash_write_trailer(), daud_write_header(), decode_fctl_chunk(), decode_frame(), decode_info_header(), decode_stream_header(), detect_stream_specific(), dirac_header(), dsf_read_packet(), dss_723_1_read_packet(), dss_sp_read_packet(), dump_stream_format(), dv_init_mux(), dv_parse_sdp_line(), dv_write_header(), dv_write_packet(), enable_tracks(), encode_write_frame(), estimate_timings(), estimate_timings_from_bit_rate(), estimate_timings_from_pts(), event_thread(), export_orphan_timecode(), extract_mpeg4_header(), fbdev_write_header(), fbdev_write_packet(), ff_alsa_open(), 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_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(), ffm_close(), ffm_write_header(), fill_all_stream_timings(), fill_timing_for_id3_timestamped_stream(), film_read_header(), filter_packet(), find_and_decode_index(), find_stream(), flac_header(), flac_read_timestamp(), flac_write_header(), flac_write_trailer(), flush(), flush_buffered(), flush_encoder(), 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(), g729_read_packet(), get_aiff_header(), get_cue_desc(), get_duration(), 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_mux_init(), hls_read_header(), hls_read_packet(), hls_read_seek(), hls_write_header(), hls_write_packet(), http_prepare_data(), http_receive_data(), 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_pts(), interleave_compare_dts(), interleave_new_audio_packet(), ircam_write_header(), ism_write_header(), ism_write_packet(), iss_read_packet(), ivf_write_header(), jacosub_write_header(), latm_parse_sdp_line(), latm_write_frame_header(), latm_write_header(), latm_write_packet(), lavfi_read_header(), libquvi_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_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_create_timecode_track(), mov_find_next_sample(), mov_read_aclr(), mov_read_ares(), mov_read_chan(), mov_read_chapters(), mov_read_close(), mov_read_colr(), mov_read_ctts(), mov_read_custom_2plus(), mov_read_dac3(), mov_read_dec3(), mov_read_dref(), mov_read_dvc1(), mov_read_elst(), mov_read_enda(), mov_read_extradata(), mov_read_fiel(), mov_read_glbl(), mov_read_hdlr(), mov_read_header(), mov_read_mdhd(), mov_read_pasp(), mov_read_sbgp(), mov_read_seek(), mov_read_stco(), mov_read_stps(), mov_read_strf(), mov_read_stsc(), mov_read_stss(), mov_read_stsz(), mov_read_stts(), mov_read_targa_y216(), mov_read_tfdt(), mov_read_tkhd(), mov_read_tmcd(), mov_read_trun(), mov_read_wave(), mov_read_wfex(), 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_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_get_dts(), mpegts_get_pcr(), mpegts_push_data(), mpegts_write_end(), mpegts_write_flush(), mpegts_write_header(), mpegts_write_packet_internal(), mpegts_write_pmt(), mv_read_packet(), mv_read_seek(), mxf_compare_timestamps(), mxf_compute_index_tables(), mxf_compute_sample_count(), mxf_free(), mxf_get_stream_index(), mxf_handle_missing_index_segment(), mxf_handle_small_eubc(), mxf_interleave_get_packet(), mxf_parse_dnxhd_frame(), mxf_parse_dv_frame(), mxf_read_close(), mxf_read_packet(), mxf_read_packet_old(), 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(), nsv_read_chunk(), nsv_read_seek(), nut_read_header(), nut_write_header(), nut_write_packet(), nuv_read_dts(), ogg_buffer_data(), ogg_compare_granule(), ogg_get_length(), 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_packet(), oma_write_header(), open_codec_context(), 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_chunks(), parse_h264_sdp_line(), parse_packet(), parse_sdp_line(), pmt_cb(), prepare_sdp_description(), probe_file(), process_frame(), 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(), rawvideo_read_packet(), rdt_parse_sdp_line(), read_braindead_odml_indx(), read_data(), read_ffserver_streams(), read_frame(), read_frame_internal(), read_gab2_sub(), read_header(), read_interval_packets(), read_kuki_chunk(), read_packet(), read_pakt_chunk(), read_part_of_packet(), read_seek(), read_thread(), read_xing_toc(), real_seek(), recheck_discard_flags(), redspark_read_packet(), remove_decoded_packets(), report_new_stream(), 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_new_av_stream(), 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(), sdl_write_header(), sdl_write_packet(), seek_frame_generic(), seek_frame_internal(), seek_test(), seg_write_header(), seg_write_packet(), segment_mux_init(), select_reference_stream(), set_disposition_bits(), setup_find_stream_info_opts(), show_packet(), show_stream(), 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(), swf_read_packet(), swf_write_header(), swf_write_packet(), swf_write_trailer(), tee_write_packet(), theora_header(), theora_packet(), tmcd_is_referenced(), transcode_init(), try_seek(), tta_read_packet(), tta_read_seek(), update_initial_timestamps(), update_odml_entry(), update_stream_extradata(), update_stream_timings(), update_wrap_reference(), v4l2_read_packet(), v4l2_set_parameters(), 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(), vqf_read_seek(), 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_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(), xwma_read_packet(), yuv4_generate_header(), yuv4_write_header(), and yuv4_write_packet().

char AVFormatContext::filename[1024]

input or output filename

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

Definition at line 1349 of file avformat.h.

Referenced by add_file(), audio_read_header(), audio_write_header(), avformat_alloc_output_context2(), avformat_open_input(), avisynth_open_file(), caca_write_header(), choose_encoder(), dash_write_header(), dash_write_trailer(), device_open(), dv1394_read_header(), extract_mpeg4_header(), fbdev_read_header(), fbdev_write_header(), ff_alsa_open(), ff_configure_buffers_for_index(), ff_decklink_list_formats(), ff_decklink_read_header(), ff_decklink_write_header(), ff_img_read_header(), ff_rtsp_setup_output_streams(), filter_packet(), 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_read_header(), hls_start(), hls_window(), hls_write_header(), iec61883_read_header(), ipod_get_codec_tag(), is_realtime(), ism_write_header(), ism_write_trailer(), lavfi_read_header(), libquvi_read_header(), log_slave(), mov_read_trak(), mpegts_write_header(), nsv_read_header(), open_output_file(), opengl_write_header(), parse_device_name(), prepare_sdp_description(), print_final_stats(), process_input(), pulse_read_header(), pulse_write_header(), qtkit_read_header(), read_header(), read_thread(), resetup_tcp(), rtp_new_av_stream(), rtsp_listen(), sap_read_header(), sap_write_header(), sdl_write_header(), seg_write_header(), seg_write_packet(), segment_end(), segment_start(), set_segment_filename(), shift_data(), show_format(), start_jack(), tee_write_header(), v4l2_get_device_list(), vfw_read_header(), webm_chunk_write_header(), webm_dash_manifest_read_header(), write_abst(), write_header(), write_manifest(), write_packet(), x11grab_read_header(), 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 1358 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(), 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 1368 of file avformat.h.

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

int 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 1375 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 1377 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(), rtp_write_header(), yuv4_read_header(), yuv4_read_packet(), and yuv4_read_seek().

int AVFormatContext::max_delay

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 1384 of file avformat.h.

Referenced by av_read_frame(), av_write_frame(), avformat_close_input(), avformat_find_stream_info(), avformat_open_input(), avformat_write_header(), avi_read_header(), compute_pkt_fields(), device_open(), dshow_read_packet(), extract_mpeg4_header(), fbdev_read_header(), fbdev_read_packet(), ff_alsa_open(), ff_framehash_write_header(), ff_img_read_header(), ff_read_packet(), ff_rtp_chain_mux_open(), flac_write_header(), gdigrab_read_packet(), gxf_read_index(), hls_read_header(), init_input(), init_muxer(), lrc_write_header(), matroska_add_index_entries(), matroska_parse_cues(), mkv_write_attachments(), mkv_write_header(), mov_read_default(), mov_write_ilst_tag(), mov_write_isml_manifest(), mov_write_uuidusmt_tag(), mp3_read_header(), mxf_write_header(), mxf_write_identification(), ogg_write_header(), open_input_file(), open_input_stream(), parse_keyframes_index(), pulse_write_header(), put_flac_codecpriv(), read_frame_internal(), read_thread(), rm_read_header(), rtp_write_header(), vfw_read_packet(), write_header(), write_packet(), and write_sm_data().

const uint8_t* AVFormatContext::key

Definition at line 1421 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 1422 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 1424 of file avformat.h.

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

AVProgram** AVFormatContext::programs

Definition at line 1425 of file avformat.h.

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

enum AVCodecID AVFormatContext::video_codec_id

Forced video codec_id.

Demuxing: Set by user.

Definition at line 1431 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 1437 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 1443 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 1455 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 1461 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 1474 of file avformat.h.

Referenced by 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_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

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 1485 of file avformat.h.

Referenced by 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(), avi_read_header(), avi_read_nikon(), avi_read_tag(), caf_write_header(), chunk_mux_init(), close_connection(), decode_info_header(), dss_read_metadata_date(), dss_read_metadata_string(), dtshd_read_header(), dv_init_mux(), dv_read_timecode(), dv_write_header(), export_orphan_timecode(), ff_ape_write_tag(), ff_id3v2_read(), ff_id3v2_write_metadata(), ff_metadata_conv_ctx(), ff_read_riff_info(), ff_riff_write_info(), ff_rm_read_mdpr_codecdata(), ff_sauce_read(), ff_wms_parse_sdp_a_line(), ffm_write_header(), flac_read_header(), flac_write_header(), flv_read_packet(), get_meta(), get_metadata(), get_string(), get_tag(), gxf_header(), gxf_write_header(), gxf_write_umf_material_description(), handle_id3(), hls_mux_init(), http_prepare_data(), id3v1_create_tag(), id3v1_set_string(), init_muxer(), libquvi_read_header(), lrc_read_header(), lrc_write_header(), main(), matroska_convert_tags(), matroska_read_header(), mkv_write_header(), mkv_write_stereo_mode(), mkv_write_tags(), modplug_load_metadata(), 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_2plus(), mov_read_ftyp(), mov_read_header(), mov_read_mvhd(), mov_read_udta_string(), mov_write_3gp_udta_tag(), mov_write_header(), mov_write_int8_metadata(), mov_write_raw_metadata_tag(), mov_write_string_metadata(), mov_write_tmpo_tag(), mov_write_trkn_tag(), mov_write_uuidusmt_tag(), mp3_read_header(), mpc_read_header(), mpegts_write_header(), mxf_init_timecode(), mxf_parse_structural_metadata(), mxf_write_header(), mxf_write_header_metadata_sets(), mxf_write_package(), nist_read_header(), nsv_parse_NSVf_header(), ogg_write_header(), open_output_file(), open_slave(), parse_legacy_attrib(), parse_tag(), prepare_sdp_description(), put_id3v2_tags(), put_meta(), read_frame_internal(), read_header(), 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_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(), 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 1498 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 1505 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 1512 of file avformat.h.

Referenced by avi_read_header(), ff_flac_parse_picture(), ff_get_wav_header(), ff_rm_read_mdpr_codecdata(), matroska_parse_tracks(), matroska_read_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 1523 of file avformat.h.

Referenced by avformat_find_stream_info(), chunk_end(), chunk_mux_init(), copy_moof(), dash_flush(), dash_write_header(), ff_img_read_packet(), ff_rtp_chain_mux_open(), find_index_range(), hds_write_header(), hls_encryption_start(), hls_mux_init(), hls_read_header(), hls_start(), hls_window(), init_file(), init_input(), ism_flush(), ism_seek(), ism_write_header(), mov_read_trak(), open_file(), open_input(), open_input_file(), open_output_file(), parse_fragment(), read_ffserver_streams(), read_header(), read_thread(), rtsp_listen(), rtsp_read_setup(), sap_read_header(), sap_write_header(), seg_write_header(), segment_list_open(), segment_mux_init(), segment_start(), webm_chunk_write_header(), write_abst(), write_manifest(), and write_packet().

int AVFormatContext::debug

Flags to enable debugging.

Definition at line 1528 of file avformat.h.

Referenced by av_interleaved_write_frame(), compute_pkt_fields(), compute_pkt_fields2(), 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 1547 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 1553 of file avformat.h.

Referenced by dash_write_header(), flv_write_header(), mov_get_codec_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 1560 of file avformat.h.

Referenced by amf_parse_object(), decode_info_header(), flac_read_header(), flv_write_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 1567 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 1576 of file avformat.h.

Referenced by asf_write_header(), avformat_write_header(), dash_write_header(), dash_write_packet(), ff_mov_write_packet(), mkv_write_header(), mov_write_header(), nut_write_header(), seg_write_header(), 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 1585 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 via AVOptions (NO direct access)
decoding: unused

Definition at line 1593 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 via AVOptions (NO direct access)
decoding: unused

Definition at line 1601 of file avformat.h.

Referenced by ff_interleave_add_packet().

int AVFormatContext::max_chunk_size

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

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

Definition at line 1609 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 via AVOptions (NO direct access)

Definition at line 1617 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 via AVOptions (NO direct access)

Definition at line 1624 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 via AVOptions (NO direct access)

Definition at line 1632 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 via AVOptions (NO direct access)

Definition at line 1639 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 via AVOptions (NO direct access)

Definition at line 1646 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 via AVOptions (NO direct access)

Definition at line 1653 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 via AVOptions (NO direct access)
decoding: unused

Definition at line 1660 of file avformat.h.

Referenced by av_write_frame(), avformat_write_header(), and write_packet().

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 via av_format_get_probe_score() (NO direct access)

Definition at line 1669 of file avformat.h.

Referenced by av_format_get_probe_score(), and avformat_open_input().

int AVFormatContext::format_probesize

number of bytes to read maximally to identify format.

encoding: unused
decoding: set by user through AVOPtions (NO direct access)

Definition at line 1676 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 through AVOptions (NO direct access)

Definition at line 1684 of file avformat.h.

Referenced by avformat_find_stream_info(), ff_copy_whitelists(), 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 through AVOptions (NO direct access)

Definition at line 1692 of file avformat.h.

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

AVFormatInternal* AVFormatContext::internal

An opaque field for libavformat internal usage.

Must not be accessed in any way by callers.

Definition at line 1698 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_read_frame(), avformat_alloc_context(), avformat_find_stream_info(), avformat_free_context(), avformat_new_stream(), avformat_open_input(), avformat_queue_attached_pictures(), compute_pkt_fields(), dv_frame_offset(), estimate_timings_from_bit_rate(), ff_gen_search(), ff_interleave_add_packet(), ff_interleave_packet_per_dts(), ff_pcm_read_seek(), ff_read_frame_flush(), ff_read_packet(), flush_packet_queue(), get_next_pkt(), init_muxer(), mkv_write_header(), mp3_seek(), 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(), 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 1706 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 via av_format_set_video_codec (NO direct access).

Definition at line 1714 of file avformat.h.

Referenced by find_decoder().

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 via av_format_set_audio_codec (NO direct access).

Definition at line 1722 of file avformat.h.

Referenced by find_decoder().

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 via av_format_set_subtitle_codec (NO direct access).

Definition at line 1730 of file avformat.h.

Referenced by find_decoder().

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 via av_format_set_data_codec (NO direct access).

Definition at line 1738 of file avformat.h.

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 1745 of file avformat.h.

Referenced by ff_id3v2_write_simple(), flac_write_header(), mp3_queue_flush(), and put_id3v2_tags().

void* AVFormatContext::opaque

User data.

This is a place for some private data of the user. Mostly usable with control_message_cb or any future callbacks in device's context.

Definition at line 1752 of file avformat.h.

av_format_control_message AVFormatContext::control_message_cb

Callback used by devices to communicate with application.

Definition at line 1757 of file avformat.h.

int64_t AVFormatContext::output_ts_offset

Output timestamp offset, in microseconds.

Muxing: set by user via AVOptions (NO direct access)

Definition at line 1763 of file avformat.h.

Referenced by write_packet().

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() via AVOptions (NO direct access). Can be set to 0 to let avformat choose using a heuristic.

Definition at line 1775 of file avformat.h.

Referenced by avformat_find_stream_info().

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() via AVOptions (NO direct access).

Definition at line 1787 of file avformat.h.

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

uint8_t* AVFormatContext::dump_separator

dump format separator.

can be ", " or "\n " or anything else Code outside libavformat should access this field using AVOptions (NO direct access).

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

Definition at line 1798 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 1804 of file avformat.h.

Referenced by open_input_file().

int(* AVFormatContext::open_cb)(struct AVFormatContext *s, AVIOContext **p, const char *url, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options)

Called to open further IO contexts when needed for demuxing.

This can be set by the user application to perform security checks on the URLs before opening them. The function should behave like avio_open2(), AVFormatContext is provided as contextual information and to reach AVFormatContext.opaque.

If NULL then some simple checks are used together with avio_open2().

Must not be accessed directly from outside avformat. av_format_set_open_cb()

Demuxing: Set by user.

Definition at line 1821 of file avformat.h.

Referenced by mov_open_dref(), and read_header().

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

libavformat/avformat.h

Data Fields

Detailed Description

Field Documentation