A class for logging and AVOptions.

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

Definition at line 1175 of file avformat.h.

Referenced by avformat_get_context_defaults(), and avformat_open_input().

The input container format.

Demuxing only, set by avformat_open_input().

Definition at line 1182 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_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_stream(), pcm_read_header(), process_input(), rawvideo_read_header(), read_frame_internal(), read_thread(), seek_frame_generic(), seek_frame_internal(), show_format(), and show_stream().

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 1189 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(), close_connection(), compute_pkt_fields2(), 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(), 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_mpeg2_frame(), mxf_write_generic_sound_common(), mxf_write_header(), mxf_write_packet(), new_output_stream(), open_output_file(), open_slave(), prepare_sdp_description(), rtp_new_av_stream(), segment_mux_init(), segment_start(), swf_write_header(), tee_write_trailer(), transcode_init(), validate_codec_tag(), write_frame(), write_header(), write_packet(), and write_video_frame().

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 1198 of file avformat.h.

Referenced by add_file(), 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(), aqt_read_close(), aqt_read_header(), aqt_read_packet(), aqt_read_seek(), asf_build_simple_index(), asf_get_packet(), asf_parse_packet(), 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_packet(), asf_read_pts(), asf_read_seek(), asf_read_stream_properties(), asf_reset_header(), 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(), 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(), concat_read_close(), concat_read_header(), concat_read_packet(), concat_seek(), convert_timestamp(), crc_write_header(), crc_write_packet(), crc_write_trailer(), dc1394_read_common(), decklink_setup_audio(), decklink_setup_video(), decklink_write_audio_packet(), decklink_write_video_packet(), decrypt_init(), detect_stream_specific(), device_init(), device_open(), dirac_gptopts(), dirac_header(), 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(), 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_alsa_close(), ff_alsa_open(), ff_alsa_xrun_recover(), 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(), 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(), finish_chunk(), finish_chunk_noindex(), finish_file(), flac_header(), flac_write_header(), flac_write_packet(), flac_write_trailer(), 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(), frm_read_packet(), g729_read_header(), gdigrab_read_close(), gdigrab_read_header(), gdigrab_read_packet(), get_aiff_header(), get_cue_desc(), get_moov_size(), get_packet_header(), get_riff(), get_system_header_size(), get_vcd_padding_size(), 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_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_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(), 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(), 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(), 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_create_chapter_track(), mov_create_timecode_track(), mov_flush_fragment(), mov_free(), mov_read_chapters(), mov_read_close(), mov_read_header(), mov_read_packet(), mov_write_ftyp_tag(), mov_write_header(), mov_write_packet(), mov_write_single_packet(), mov_write_trailer(), mov_write_uuidusmt_tag(), 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(), 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_parse_dnxhd_frame(), mxf_parse_dv_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_package(), mxf_write_packet(), mxf_write_partition(), mxf_write_preface(), mxf_write_random_index_pack(), mxf_write_sequence(), mxf_write_system_item(), mxf_write_timecode_component(), mxf_write_track(), mxf_write_umid(), 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_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(), 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(), process_video_header_cmv(), process_video_header_mdec(), process_video_header_vp6(), 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(), 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(), 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_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_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(), 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_shm(), 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(), 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(), sync(), 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(), 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_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(), wc3_read_close(), wc3_read_header(), wc3_read_packet(), webm_clusters_start_with_keyframe(), webm_dash_manifest_compute_bandwidth(), webm_dash_manifest_cues(), webm_dash_manifest_read_header(), webm_dash_manifest_write_header(), webm_dash_manifest_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_packet(), write_picture(), 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_read_seek(), wv_write_packet(), wv_write_trailer(), x11grab_read_close(), x11grab_read_header(), x11grab_read_packet(), xa_read_header(), xa_read_packet(), 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().

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 1212 of file avformat.h.

Referenced by a64_write_header(), 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(), aqt_read_header(), asf_build_simple_index(), asf_read_content_desc(), asf_read_ext_content_desc(), asf_read_ext_stream_properties(), asf_read_file_properties(), asf_read_header(), asf_read_language_list(), asf_read_marker(), asf_read_metadata(), asf_read_packet(), asf_read_picture(), asf_read_pts(), asf_read_seek(), asf_read_stream_properties(), asf_write_header(), asf_write_header1(), asf_write_index(), asf_write_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_packet(), check(), 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(), daud_packet(), daud_write_packet(), decode_frame(), decode_frame_header(), decode_info_header(), decode_main_header(), decode_stream_header(), decode_syncpoint(), dfa_read_header(), dfa_read_packet(), dsf_read_header(), dsf_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_find_last_ts(), ff_framehash_write_header(), ff_gen_syncpoint_search(), 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_restore_parser_state(), 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_store_parser_state(), ff_voc_get_packet(), ff_wms_parse_sdp_a_line(), ffm2_read_header(), ffm_is_avail_data(), ffm_read_data(), ffm_read_header(), ffm_read_packet(), ffm_resync(), ffm_seek1(), ffm_write_header(), 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(), 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_image_write_header(), gif_read_ext(), gif_read_header(), gif_read_packet(), gif_write_header(), gif_write_trailer(), gsm_read_packet(), guess_ni_flag(), gxf_header(), gxf_packet(), gxf_read_index(), gxf_read_timestamp(), gxf_resync_media(), gxf_seek(), gxf_write_flt_packet(), gxf_write_header(), gxf_write_map_packet(), gxf_write_material_data_section(), gxf_write_media_preamble(), gxf_write_packet(), gxf_write_track_description(), gxf_write_track_description_section(), gxf_write_trailer(), gxf_write_umf_material_description(), gxf_write_umf_media_description(), gxf_write_umf_packet(), gxf_write_umf_payload(), gxf_write_umf_track_description(), handle_packet(), handle_packets(), 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(), 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(), 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_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_seek(), mp3_update_xing(), mp3_write_trailer(), mp3_write_xing(), mpc8_handle_chunk(), mpc8_parse_seektable(), mpc8_read_header(), mpc8_read_packet(), mpc8_read_seek(), mpc_read_header(), mpc_read_packet(), mpegps_read_dts(), mpegps_read_header(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_get_dts(), mpegts_get_pcr(), mpegts_insert_null_packet(), mpegts_insert_pcr_only(), mpegts_prefix_m2ts_header(), mpegts_raw_read_packet(), mpegts_read_header(), mpegts_resync(), mpegts_write_packet_internal(), mpegts_write_pes(), mpjpeg_write_header(), mpjpeg_write_packet(), mpl2_read_header(), mpsub_read_header(), msnwc_tcp_read_header(), msnwc_tcp_read_packet(), mtv_read_header(), mtv_read_packet(), mv_read_header(), mv_read_packet(), mv_read_seek(), mxf_decrypt_triplet(), mxf_parse_handle_essence(), mxf_read_header(), mxf_read_local_tags(), mxf_read_packet(), mxf_read_packet_old(), mxf_read_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_package(), mxf_write_packet(), mxf_write_partition(), mxf_write_preface(), mxf_write_primer_pack(), mxf_write_random_index_pack(), mxf_write_sequence(), mxf_write_structural_component(), mxf_write_system_item(), mxf_write_timecode_component(), mxf_write_track(), mxf_write_umid(), mxf_write_wav_common(), mxg_read_packet(), mxg_update_cache(), nc_read_packet(), need_output(), nist_read_header(), nsv_parse_NSVf_header(), nsv_parse_NSVs_header(), nsv_read_chunk(), nsv_read_seek(), nsv_resync(), nut_read_header(), nut_read_packet(), nut_read_timestamp(), nut_write_header(), nut_write_packet(), nut_write_trailer(), nuv_header(), nuv_packet(), nuv_read_dts(), nuv_resync(), ogg_get_length(), ogg_read_page(), ogg_read_timestamp(), ogg_replace_stream(), ogg_reset(), ogg_restore(), ogg_save(), ogg_write_page(), oma_read_header(), oma_read_packet(), oma_read_seek(), oma_write_header(), open_input_stream(), open_output_file(), open_slave(), parse_audio_var(), parse_dsd_diin(), parse_dsd_prop(), parse_global_var(), parse_video_var(), pjs_read_header(), pmp_header(), pmp_packet(), print_report(), process_audio_header_eacs(), process_audio_header_elements(), process_audio_header_sead(), process_ea_header(), process_video_header_cmv(), process_video_header_mdec(), process_video_header_vp6(), 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(), 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_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_new_av_stream(), rtp_write_header(), rtp_write_trailer(), rv10_write_header(), sami_read_header(), sap_read_header(), sap_write_close(), 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(), str_read_header(), str_read_packet(), subviewer1_read_header(), subviewer_read_header(), swf_read_header(), swf_read_packet(), swf_write_header(), swf_write_trailer(), swf_write_video(), sync(), 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_stream_timings(), var_read_metadata(), vc1t_read_header(), vc1t_read_packet(), vc1test_write_header(), vc1test_write_packet(), vc1test_write_trailer(), vid_read_header(), vid_read_packet(), vivo_get_packet_header(), vivo_read_header(), vivo_read_packet(), vmd_read_header(), vmd_read_packet(), voc_read_header(), voc_write_header(), voc_write_packet(), voc_write_trailer(), vplayer_read_header(), vqf_read_header(), vqf_read_packet(), vqf_read_seek(), wc3_read_header(), wc3_read_packet(), webm_clusters_start_with_keyframe(), webm_dash_manifest_cues(), webm_dash_manifest_read_header(), webm_dash_manifest_write_header(), 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_packet(), write_packet_header(), write_root_table(), write_stream_codec(), write_stream_codec_info(), write_stream_data(), write_sync(), write_table_entries_attrib(), write_table_entries_events(), write_table_entries_time(), write_table_redirector_legacy_attrib(), write_timestamp(), write_trailer(), wsaud_read_header(), wsaud_read_packet(), wsvqa_read_header(), wsvqa_read_packet(), wtvfile_open_sector(), wv_read_header(), wv_read_packet(), wv_read_seek(), 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(), and yuv4_write_packet().

Flags signalling stream properties.

A combination of AVFMTCTX_*. Set by libavformat.

Definition at line 1219 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(), 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().

Number of elements in AVFormatContext.streams.

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

Examples:

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

Definition at line 1226 of file avformat.h.

Referenced by add_input_streams(), add_metadata_from_renditions(), add_stream(), aiff_write_header(), amf_parse_object(), 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(), clean_index(), clear_index_entries(), close_connection(), close_input_file(), close_slaves(), concat_read_header(), configure_output_audio_filter(), copy_metadata(), create_stream(), 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_decklink_write_header(), ff_find_stream_index(), ff_framehash_write_header(), ff_free_stream(), ff_gen_syncpoint_search(), ff_interleave_packet_per_dts(), ff_metadata_conv_ctx(), ff_mov_read_esds(), ff_mov_read_stsd_entries(), ff_nut_reset_ts(), ff_program_add_stream_index(), ff_rdt_parse_open(), ff_read_frame_flush(), ff_read_packet(), ff_rfps_calculate(), ff_rtsp_setup_output_streams(), ff_spdif_read_packet(), ff_store_parser_state(), ff_update_cur_dts(), ffm_close(), ffm_read_packet(), ffm_write_header(), fill_all_stream_timings(), film_read_header(), finalize_packet(), find_and_decode_index(), find_stream(), 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(), lavfi_read_header(), lavfi_read_packet(), 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_ares(), mov_read_chan(), mov_read_chapters(), mov_read_close(), 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_tkhd(), mov_read_tmcd(), mov_read_trak(), mov_read_trun(), mov_read_wave(), mov_read_wfex(), mov_write_ftyp_tag(), mov_write_header(), mov_write_moov_tag(), mov_write_single_packet(), movie_common_init(), mpc8_parse_seektable(), mpeg_mux_end(), mpeg_mux_init(), mpegps_read_packet(), mpegps_read_pes_header(), mpegts_write_end(), mpegts_write_flush(), mpegts_write_header(), mpegts_write_packet_internal(), mpegts_write_pmt(), mv_read_packet(), mv_read_seek(), mxf_compute_index_tables(), mxf_free(), mxf_get_stream_index(), mxf_handle_small_eubc(), mxf_interleave_get_packet(), mxf_parse_dnxhd_frame(), mxf_parse_dv_frame(), mxf_read_close(), mxf_read_seek(), mxf_write_header(), mxf_write_index_table_segment(), mxf_write_multi_descriptor(), mxf_write_package(), mxf_write_partition(), need_output(), new_output_stream(), nsv_parse_NSVs_header(), nsv_read_chunk(), nsv_read_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(), 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_write_header(), rm_write_trailer(), roq_write_header(), rpl_read_packet(), rtp_new_av_stream(), rtp_write_header(), rtsp_read_header(), rtsp_read_packet(), rv10_write_header(), sap_fetch_packet(), sap_read_header(), sap_write_close(), sap_write_header(), sdl_write_header(), search_hi_lo_keyframes(), segment_mux_init(), select_reference_stream(), set_disposition_bits(), setup_find_stream_info_opts(), show_format(), show_streams(), smjpeg_write_header(), srt_write_header(), stream_component_close(), stream_component_open(), stream_cycle_channel(), sub2video_prepare(), swf_read_packet(), swf_write_header(), swf_write_trailer(), sync(), tee_write_header(), tmcd_is_referenced(), transcode_init(), try_seek(), update_stream_timings(), update_wrap_reference(), voc_write_header(), write_header(), write_headers(), write_index(), write_mainheader(), write_manifest(), write_trailer(), wv_write_header(), xmv_process_packet_header(), xv_write_header(), and yuv4_write_header().

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, remuxing.c, and transcoding.c.

Definition at line 1238 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(), asf_build_simple_index(), asf_parse_packet(), asf_read_frame_header(), asf_read_header(), asf_read_pts(), asf_read_seek(), 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_packet(), check_stream_max_drift(), 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(), daud_write_header(), decode_frame(), decode_info_header(), decode_stream_header(), detect_stream_specific(), dirac_header(), dsf_read_packet(), dump_stream_format(), dv_init_mux(), 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_decklink_write_header(), ff_decklink_write_packet(), ff_find_stream_index(), ff_framehash_write_header(), ff_free_stream(), ff_gen_syncpoint_search(), 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_restore_parser_state(), ff_rfps_calculate(), ff_rtp_chain_mux_open(), ff_rtp_send_aac(), ff_rtp_send_jpeg(), ff_rtp_send_latm(), ff_rtsp_open_transport_ctx(), ff_sauce_read(), ff_seek_frame_binary(), ff_spdif_read_packet(), ff_store_parser_state(), 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_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_image_write_header(), gif_write_header(), 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(), h261_init(), h263_init(), h264_init(), handle_file(), has_duration(), hds_flush(), hds_write_header(), hds_write_packet(), hevc_init(), 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(), init_video(), 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_parse_tracks(), 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(), mov_create_timecode_track(), mov_find_next_sample(), mov_read_ares(), mov_read_chan(), mov_read_chapters(), mov_read_close(), 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_tkhd(), mov_read_tmcd(), mov_read_trun(), mov_read_wave(), mov_read_wfex(), mov_write_ftyp_tag(), mov_write_header(), mov_write_moov_tag(), mov_write_single_packet(), mov_write_udta_sdp(), mov_write_uuidprof_tag(), movie_common_init(), mp3_seek(), mp3_write_xing(), mpc8_parse_seektable(), mpc8_read_seek(), mpc_read_packet(), mpc_read_seek(), mpeg_init(), 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_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_index_table_segment(), mxf_write_multi_descriptor(), mxf_write_package(), mxf_write_packet(), mxf_write_system_item(), 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(), 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_write_header(), rm_write_packet(), roq_write_header(), rpl_read_packet(), rsd_read_packet(), rso_write_header(), 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(), search_hi_lo_keyframes(), seek_frame_generic(), seek_frame_internal(), 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(), srt_write_packet(), 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(), sync(), tee_write_packet(), theora_header(), theora_packet(), tmcd_is_referenced(), transcode_init(), try_seek(), tta_read_packet(), tta_read_seek(), update_initial_timestamps(), update_stream_timings(), update_wrap_reference(), v4l2_read_packet(), v4l2_set_parameters(), vc1t_read_packet(), vc1test_write_header(), voc_read_packet(), voc_write_header(), voc_write_packet(), vorbis_header(), vorbis_packet(), vorbis_update_metadata(), vp8_header(), vp8_packet(), vqf_read_seek(), webm_clusters_start_with_keyframe(), webm_dash_manifest_compute_bandwidth(), webm_dash_manifest_cues(), webm_dash_manifest_read_header(), webvtt_write_header(), write_abst(), write_adaptation_set(), write_frame(), write_header(), write_headers(), write_manifest(), write_packet(), write_streaminfo(), write_table_entries_attrib(), write_table_redirector_legacy_attrib(), write_timestamp(), write_trailer(), wsaud_read_packet(), wv_read_packet(), wv_read_seek(), wv_write_header(), xa_read_packet(), xiph_parse_sdp_line(), xiph_vorbis_init(), xmv_process_packet_header(), xv_write_header(), xv_write_packet(), xwma_read_packet(), yuv4_generate_header(), yuv4_read_packet(), yuv4_write_header(), and yuv4_write_packet().

input or output filename

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

Definition at line 1246 of file avformat.h.

Referenced by add_file(), audio_read_header(), audio_write_header(), avf_read_header(), avformat_alloc_output_context2(), avformat_open_input(), avisynth_open_file(), caca_write_header(), choose_encoder(), device_open(), dv1394_read_header(), extract_mpeg4_header(), fbdev_read_header(), fbdev_write_header(), ff_alsa_open(), ff_decklink_write_header(), ff_img_read_header(), ff_rtsp_setup_output_streams(), filter_packet(), gdigrab_read_header(), grab_read_header(), gxf_write_material_data_section(), hds_flush(), hds_write_header(), hds_write_trailer(), hls_append_segment(), 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(), transcode_init(), vfw_read_header(), webm_dash_manifest_read_header(), write_abst(), write_header(), write_manifest(), write_packet(), x11grab_read_header(), and xv_write_header().

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 1255 of file avformat.h.

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

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 1265 of file avformat.h.

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

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 1272 of file avformat.h.

Referenced by av_dump_format(), dv_read_header(), estimate_timings(), estimate_timings_from_bit_rate(), event_loop(), ff_spdif_read_packet(), g729_read_header(), mpegts_read_header(), mxf_read_seek(), show_format(), and update_stream_timings().

Definition at line 1274 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(), and rtp_write_header().

Definition at line 1275 of file avformat.h.

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

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 1281 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_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_execute_seekhead(), mkv_write_attachments(), mkv_write_header(), mov_read_default(), mov_write_header(), mov_write_track_udta_tag(), mp3_write_xing(), 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().

Deprecated:

deprecated in favor of probesize2

Definition at line 1307 of file avformat.h.

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

Deprecated:

deprecated in favor of max_analyze_duration2

Definition at line 1313 of file avformat.h.

Referenced by avformat_find_stream_info().

Definition at line 1315 of file avformat.h.

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

Definition at line 1316 of file avformat.h.

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

Definition at line 1318 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().

Definition at line 1319 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().

Forced video codec_id.

Demuxing: Set by user.

Definition at line 1325 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().

Forced audio codec_id.

Demuxing: Set by user.

Definition at line 1331 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().

Forced subtitle codec_id.

Demuxing: Set by user.

Definition at line 1337 of file avformat.h.

Referenced by force_codec_ids(), and open_input_file().

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 1349 of file avformat.h.

Referenced by ff_reduce_index().

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

Definition at line 1355 of file avformat.h.

Referenced by shall_we_drop().

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 1368 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().

Definition at line 1369 of file avformat.h.

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

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 1379 of file avformat.h.

Referenced by add_meta(), add_metadata(), adts_aac_read_header(), amf_parse_object(), ape_tag_read_field(), asf_read_header(), asf_write_header1(), av_dump_format(), avformat_free_context(), avi_read_header(), avi_read_nikon(), avi_read_tag(), caf_write_header(), close_connection(), decode_info_header(), dtshd_read_header(), dv_init_mux(), dv_read_timecode(), dv_write_header(), export_orphan_timecode(), ff_ape_write_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(), flv_write_header(), 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_raw(), 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_parse_structural_metadata(), mxf_write_header(), 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(), rv10_write_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_table_entries_attrib(), write_table_redirector_legacy_attrib(), write_trailer(), and wv_read_header().

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 1392 of file avformat.h.

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

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 1399 of file avformat.h.

Referenced by avformat_find_stream_info().

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 1406 of file avformat.h.

Referenced by avi_read_header(), ebml_parse_id(), ff_flac_parse_picture(), ff_rm_read_mdpr_codecdata(), matroska_read_header(), ogg_read_header(), read_header(), and tak_read_header().

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 1417 of file avformat.h.

Referenced by avformat_find_stream_info(), copy_moof(), ff_img_read_packet(), ff_rtp_chain_mux_open(), hds_write_header(), 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(), write_abst(), write_manifest(), and write_packet().

Flags to enable debugging.

Definition at line 1422 of file avformat.h.

Referenced by read_frame_internal().

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 1441 of file avformat.h.

Referenced by asf_write_header(), and ff_interleave_packet_per_dts().

Allow non-standard and experimental extension.

See Also

AVCodecContext.strict_std_compliance

Definition at line 1447 of file avformat.h.

Referenced by nut_write_header().

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 1454 of file avformat.h.

Referenced by amf_parse_object(), decode_info_header(), flac_read_header(), 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().

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

Decoding only.

Definition at line 1461 of file avformat.h.

Referenced by avformat_find_stream_info().

Transport stream id.

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

Definition at line 1468 of file avformat.h.

Referenced by pat_cb().

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 1476 of file avformat.h.

Referenced by interleave_compare_dts().

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 1484 of file avformat.h.

Referenced by ff_interleave_add_packet().

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 1492 of file avformat.h.

Referenced by ff_interleave_add_packet().

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 1500 of file avformat.h.

Referenced by ff_read_packet().

Avoid negative timestamps during muxing.

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

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

Definition at line 1511 of file avformat.h.

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

avio flags, used to force AVIO_FLAG_DIRECT.

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

Definition at line 1518 of file avformat.h.

Referenced by init_input().

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 1526 of file avformat.h.

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

Skip initial bytes when opening stream.

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

Definition at line 1533 of file avformat.h.

Referenced by avformat_open_input().

Correct single timestamp overflows.

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

Definition at line 1540 of file avformat.h.

Referenced by update_wrap_reference().

Force seeking to any (also non key) frames.

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

Definition at line 1547 of file avformat.h.

Referenced by avformat_seek_file().

Flush the I/O context after each packet.

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

Definition at line 1554 of file avformat.h.

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

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 1563 of file avformat.h.

Referenced by av_format_get_probe_score(), and avformat_open_input().

number of bytes to read maximally to identify format.

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

Definition at line 1570 of file avformat.h.

Referenced by init_input().

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

Definition at line 1585 of file avformat.h.

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

Definition at line 1586 of file avformat.h.

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

offset of the first packet

Definition at line 1589 of file avformat.h.

Referenced by asf_build_simple_index(), asf_get_packet(), asf_read_pts(), asf_read_seek(), av_demuxer_open(), avformat_open_input(), dv_frame_offset(), estimate_timings_from_bit_rate(), ff_gen_search(), ff_pcm_read_seek(), mp3_seek(), mtv_read_packet(), nut_read_header(), ogg_get_length(), ogg_packet(), r3d_read_header(), read_header(), seek_frame_byte(), seek_frame_generic(), vqf_read_seek(), and yop_read_seek().

Raw packets from the demuxer, prior to parsing and decoding.

This buffer is used for buffering packets until the codec can be identified, as parsing cannot be done without knowing the codec.

Definition at line 1597 of file avformat.h.

Referenced by avformat_queue_attached_pictures(), ff_read_packet(), ff_restore_parser_state(), ff_store_parser_state(), and flush_packet_queue().

Definition at line 1598 of file avformat.h.

Referenced by avformat_queue_attached_pictures(), ff_read_packet(), and flush_packet_queue().

Packets split by the parser get queued here.

Definition at line 1602 of file avformat.h.

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

Definition at line 1603 of file avformat.h.

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

Definition at line 1608 of file avformat.h.

Referenced by avformat_open_input(), ff_read_packet(), ff_restore_parser_state(), ff_store_parser_state(), flush_packet_queue(), and probe_codec().

Offset to remap timestamps to be non-negative.

Expressed in timebase units.

See Also

AVStream.mux_ts_offset

Definition at line 1615 of file avformat.h.

Referenced by write_packet().

Timebase for the timestamp offset.

Definition at line 1620 of file avformat.h.

Referenced by write_packet().

An opaque field for libavformat internal usage.

Must not be accessed in any way by callers.

Definition at line 1626 of file avformat.h.

Referenced by av_format_inject_global_side_data(), avformat_alloc_context(), avformat_free_context(), avformat_new_stream(), ff_interleave_packet_per_dts(), ff_read_frame_flush(), and init_muxer().

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 1634 of file avformat.h.

Referenced by ogg_read_packet(), and seek_frame_byte().

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 1642 of file avformat.h.

Referenced by find_decoder().

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 1650 of file avformat.h.

Referenced by find_decoder().

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 1658 of file avformat.h.

Referenced by find_decoder().

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 1665 of file avformat.h.

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

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 1672 of file avformat.h.

Callback used by devices to communicate with application.

Definition at line 1677 of file avformat.h.

Referenced by avdevice_dev_to_app_control_message().

Output timestamp offset, in microseconds.

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

Definition at line 1683 of file avformat.h.

Referenced by write_packet().

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 1692 of file avformat.h.

Referenced by avformat_find_stream_info().

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 1700 of file avformat.h.

Referenced by avformat_find_stream_info(), and mpegts_read_header().