Functions for querying libavformat capabilities, allocating core structures, etc.
Do global initialization of network libraries.
This is optional, and not recommended anymore.
This functions only exists to work around thread-safety issues with older GnuTLS or OpenSSL libraries. If libavformat is linked to newer versions of those libraries, or if you do not use them, calling this function is unnecessary. Otherwise, you need to call this function before any other threads using them are started.
This function will be deprecated once support for older GnuTLS and OpenSSL libraries is removed, and this function has no purpose anymore.
Definition at line 551 of file utils.c.
Referenced by main().
Undo the initialization done by avformat_network_init.
Call it only once for each time you called avformat_network_init.
Definition at line 563 of file utils.c.
Referenced by do_exit(), ffmpeg_cleanup(), and main().
Iterate over all registered muxers.
Definition at line 585 of file allformats.c.
Referenced by av_guess_format(), format_child_class_iterate(), show_format_opts(), and show_formats_devices().
Iterate over all registered demuxers.
Definition at line 606 of file allformats.c.
Referenced by av_find_input_format(), av_probe_input_format3(), ff_img_read_header(), format_child_class_iterate(), LLVMFuzzerTestOneInput(), print_times(), probe(), show_format_opts(), and show_formats_devices().
Allocate an AVFormatContext.
avformat_free_context() can be used to free the context and everything allocated by the framework within it.
Definition at line 161 of file options.c.
Referenced by avformat_alloc_output_context2(), avformat_open_input(), dash_init(), dvdvideo_subdemux_open(), ff_alloc_input_device_context(), ff_rtp_chain_mux_open(), ff_wms_parse_sdp_a_line(), hds_write_header(), hls_read_header(), ifile_open(), init_fps(), ism_write_header(), LLVMFuzzerTestOneInput(), main(), mov_finalize_stsd_codec(), mpegts_init(), open_file(), open_input_file(), open_output_file(), open_track_resource_context(), rdt_init(), read_gab2_sub(), read_thread(), reopen_demux_for_component(), rtp_mpegts_write_header(), and sap_read_header().
Free an AVFormatContext and all its streams.
Definition at line 145 of file avformat.c.
Referenced by avformat_alloc_context(), avformat_alloc_output_context2(), avformat_close_input(), avformat_open_input(), close_slave(), dash_free(), dvdvideo_subdemux_open(), fc_close(), ff_alloc_input_device_context(), ff_mov_close_hinting(), ff_mov_generate_squashed_ttml_packet(), ff_rtp_chain_mux_open(), ff_rtsp_undo_setup(), fifo_deinit(), finish(), hds_free(), hls_deinit(), hls_read_header(), ifile_open(), ism_free(), list_devices_for_context(), main(), mov_read_close(), mpegts_deinit(), open_output_file(), open_track_resource_context(), reopen_demux_for_component(), rtp_mpegts_write_close(), rtp_mpegts_write_header(), run_test(), sap_write_close(), seg_free(), segment_start(), webm_chunk_deinit(), and write_muxed_file().
Get the AVClass for AVFormatContext.
It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.
Definition at line 197 of file options.c.
Referenced by check_avoptions_used(), opt_default(), show_format_opts(), and show_help_default().
It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.
Definition at line 246 of file options.c.
Referenced by stream_specifier_parse().
Get the AVClass for AVStreamGroup.
It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.
Definition at line 328 of file avformat.c.
Referenced by get_stream_group_type(), and show_stream_group().
Add a new empty stream group to a media file.
When demuxing, it may be called by the demuxer in read_header(). If the flag AVFMTCTX_NOHEADER is set in s.ctx_flags, then it may also be called in read_packet().
When muxing, may be called by the user before avformat_write_header().
User is required to call avformat_free_context() to clean up the allocation by avformat_stream_group_create().
New streams can be added to the group with avformat_stream_group_add_stream().
Definition at line 445 of file options.c.
Referenced by iamf_read_header(), mov_parse_tiles(), mov_read_header(), and of_parse_group_token().
Add a new stream to a media file.
When demuxing, it is called by the demuxer in read_header(). If the flag AVFMTCTX_NOHEADER is set in s.ctx_flags, then it may also be called in read_packet().
When muxing, should be called by the user before avformat_write_header().
User is required to call avformat_free_context() to clean up the allocation by avformat_new_stream().
Referenced by aa_read_header(), aax_read_header(), ac4_read_header(), ace_read_header(), acm_read_header(), add_dstream(), add_stream(), add_video_stream(), adp_read_header(), ads_read_header(), adts_aac_read_header(), adx_read_header(), aea_read_header(), afc_read_header(), aiff_read_header(), aix_read_header(), apac_read_header(), apc_read_header(), ape_read_header(), ape_tag_read_field(), apng_read_header(), aptx_read_header_common(), aqt_read_header(), argo_brp_read_header(), asf_read_stream_properties(), ass_read_header(), ast_read_header(), audio_read_header(), av1_read_header(), avi_read_header(), avisynth_create_stream(), avr_read_header(), avs_read_packet(), bfi_read_header(), binka_read_header(), bmv_read_header(), bonk_read_header(), cdata_read_header(), cdxl_read_packet(), cin_read_header(), cine_read_header(), codec2_read_header(), codec2raw_read_header(), concat_parse_script(), create_audio_stream(), create_new_audio_stream(), create_stream(), create_subcc_streams(), dash_init(), dat_read_packet(), daud_header(), dc1394_read_common(), dcstr_read_header(), dec_enc(), decode_main_header(), derf_read_header(), dfa_read_header(), dfpwm_read_header(), dhav_read_packet(), dsf_read_header(), dshow_add_device(), dss_read_header(), dtshd_read_header(), dvdvideo_audio_stream_add(), dvdvideo_subp_stream_add(), dvdvideo_video_stream_add(), dxa_read_header(), ea_read_header(), eit_cb(), epaf_read_header(), evc_read_header(), fbdev_read_header(), ff_add_attached_pic(), ff_decklink_read_header(), ff_img_read_header(), ff_raw_audio_read_header(), ff_raw_subtitle_read_header(), ff_raw_video_read_header(), ff_rtp_chain_mux_open(), ff_spdif_read_packet(), ff_stream_clone(), film_read_header(), fits_read_header(), flac_read_header(), frm_read_header(), fsb_read_header(), fwse_read_header(), g722_read_header(), g723_1_init(), g726_read_header(), g729_read_header(), gdigrab_read_header(), gdv_read_header(), genh_read_header(), get_audio_config(), get_sindex(), get_video_config(), gif_read_header(), grab_read_header(), gsm_read_header(), hca_read_header(), hcom_read_header(), hds_write_header(), heif_add_stream(), hls_mux_init(), hnm_read_header(), iamf_read_header(), idcin_read_header(), iec61883_read_header(), iff_read_header(), ifv_read_header(), ilbc_read_header(), init_audio(), init_fps(), init_stream(), init_video_stream(), initialize_fifo_tst_muxer_chain(), ipmovie_read_header(), ipu_read_header(), ircam_read_header(), ism_write_header(), iss_read_header(), ivr_read_header(), jacosub_read_header(), jpegxl_anim_read_header(), kmsgrab_read_header(), laf_read_header(), lavfi_read_header(), lmlm4_read_header(), loas_read_header(), lrc_read_header(), lvf_read_header(), lxf_read_header(), main(), match_streams_one_to_one(), mcc_read_header(), microdvd_read_header(), mmf_read_header(), modplug_read_header(), mods_read_header(), moflex_read_sync(), mov_init_ttml_writer(), mov_read_trak(), mp3_read_header(), mpc8_read_header(), mpc_read_header(), mpegps_read_packet(), mpegts_init(), mpegts_push_data(), mpegts_read_header(), mpegts_set_stream_info(), mpjpeg_read_header(), mpl2_read_header(), mpsub_read_header(), msf_read_header(), msnwc_tcp_read_header(), msp_read_header(), mtaf_read_header(), mtv_read_header(), musx_read_header(), mv_read_header(), mxf_add_metadata_stream(), mxf_parse_structural_metadata(), mxg_read_header(), nc_read_header(), new_stream(), nist_read_header(), nsp_read_header(), nsv_parse_NSVs_header(), nuv_header(), ogg_new_stream(), oma_read_header(), open_demux_for_component(), open_output_file(), osq_read_header(), ost_add(), parse_chunk(), parse_strk(), parse_vtrk(), pcm_read_header(), pdv_read_header(), pjs_read_header(), pmp_header(), pmt_cb(), pp_bnk_read_header(), pulse_read_header(), pva_read_header(), pvf_read_header(), qcp_read_header(), qoa_read_header(), r3d_read_red1(), r3d_read_reda(), raw_data_read_header(), rawvideo_read_header(), rcwt_read_header(), read_desc_chunk(), read_frame(), read_header(), read_header_gme(), read_header_openmpt(), read_header_vs(), read_packet(), realtext_read_header(), redspark_read_header(), rka_read_header(), rl2_read_header(), rm_read_header(), rm_read_header_old(), rm_read_multi(), roq_read_packet(), rpl_read_header(), rsd_read_header(), rso_read_header(), rtp_mpegts_write_header(), s337m_read_packet(), sami_read_header(), sap_fetch_packet(), sap_read_header(), sbg_read_header(), scc_read_header(), scd_read_track(), sdns_read_header(), sdr2_read_header(), sds_read_header(), sdx_read_header(), seq_read_header(), ser_read_header(), sga_audio_packet(), sga_video_packet(), siff_parse_vbv1(), simbiosis_imx_read_header(), smacker_read_header(), smjpeg_read_header(), smush_read_header(), sol_read_header(), sox_read_header(), srt_read_header(), stl_read_header(), str_read_packet(), subviewer1_read_header(), subviewer_read_header(), sup_read_header(), svag_read_header(), svs_read_header(), swf_read_packet(), tak_read_header(), tedcaptions_read_header(), thp_read_header(), threedostr_read_header(), tmv_read_header(), track_header(), tta_read_header(), txd_read_header(), ty_read_header(), update_streams_from_subdemuxer(), v4l2_read_header(), vag_read_header(), vc1t_read_header(), vfw_read_header(), vid_read_packet(), vivo_read_header(), vmd_read_header(), voc_read_packet(), vpk_read_header(), vplayer_read_header(), vqf_read_header(), wady_read_header(), wavarc_read_header(), wc3_read_header(), webvtt_read_header(), write_muxed_file(), wsaud_read_header(), wsd_read_header(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_header(), wve_read_header(), xa_read_header(), xmd_read_header(), xmv_process_packet_header(), xvag_read_header(), xwma_read_header(), yop_read_header(), and yuv4_read_header().
Add an already allocated stream to a stream group.
When demuxing, it may be called by the demuxer in read_header(). If the flag AVFMTCTX_NOHEADER is set in s.ctx_flags, then it may also be called in read_packet().
When muxing, may be called by the user before avformat_write_header() after having allocated a new group with avformat_stream_group_create() and stream with avformat_new_stream().
User is required to call avformat_free_context() to clean up the allocation by avformat_stream_group_add_stream().
Definition at line 525 of file options.c.
Referenced by iamf_read_header(), mov_parse_tiles(), mov_read_header(), and of_parse_group_token().
Definition at line 339 of file avformat.c.
Referenced by dash_read_header(), hls_read_header(), of_add_programs(), pat_cb(), and sdt_cb().