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FFmpeg
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Functions | |
| unsigned | avformat_version (void) |
| Return the LIBAVFORMAT_VERSION_INT constant. More... | |
| const char * | avformat_configuration (void) |
| Return the libavformat build-time configuration. More... | |
| const char * | avformat_license (void) |
| Return the libavformat license. More... | |
| int | avformat_network_init (void) |
| Do global initialization of network libraries. More... | |
| int | avformat_network_deinit (void) |
| Undo the initialization done by avformat_network_init. More... | |
| const AVOutputFormat * | av_muxer_iterate (void **opaque) |
| Iterate over all registered muxers. More... | |
| const AVInputFormat * | av_demuxer_iterate (void **opaque) |
| Iterate over all registered demuxers. More... | |
| AVFormatContext * | avformat_alloc_context (void) |
| Allocate an AVFormatContext. More... | |
| void | avformat_free_context (AVFormatContext *s) |
| Free an AVFormatContext and all its streams. More... | |
| const AVClass * | avformat_get_class (void) |
| Get the AVClass for AVFormatContext. More... | |
| const AVClass * | av_stream_get_class (void) |
| Get the AVClass for AVStream. More... | |
| const AVClass * | av_stream_group_get_class (void) |
| Get the AVClass for AVStreamGroup. More... | |
| const char * | avformat_stream_group_name (enum AVStreamGroupParamsType type) |
| AVStreamGroup * | avformat_stream_group_create (AVFormatContext *s, enum AVStreamGroupParamsType type, AVDictionary **options) |
| Add a new empty stream group to a media file. More... | |
| AVStream * | avformat_new_stream (AVFormatContext *s, const struct AVCodec *c) |
| Add a new stream to a media file. More... | |
| int | avformat_stream_group_add_stream (AVStreamGroup *stg, AVStream *st) |
| Add an already allocated stream to a stream group. More... | |
| AVProgram * | av_new_program (AVFormatContext *s, int id) |
Functions for querying libavformat capabilities, allocating core structures, etc.
| unsigned avformat_version | ( | void | ) |
| const char* avformat_configuration | ( | void | ) |
| const char* avformat_license | ( | void | ) |
| int avformat_network_init | ( | void | ) |
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 558 of file utils.c.
Referenced by main().
| int avformat_network_deinit | ( | void | ) |
Undo the initialization done by avformat_network_init.
Call it only once for each time you called avformat_network_init.
Definition at line 570 of file utils.c.
Referenced by do_exit(), ffmpeg_cleanup(), and main().
| const AVOutputFormat* av_muxer_iterate | ( | void ** | opaque | ) |
Iterate over all registered muxers.
| opaque | a pointer where libavformat will store the iteration state. Must point to NULL to start the iteration. |
Definition at line 582 of file allformats.c.
Referenced by av_guess_format(), format_child_class_iterate(), show_format_opts(), and show_formats_devices().
| const AVInputFormat* av_demuxer_iterate | ( | void ** | opaque | ) |
Iterate over all registered demuxers.
| opaque | a pointer where libavformat will store the iteration state. Must point to NULL to start the iteration. |
Definition at line 603 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().
| AVFormatContext* avformat_alloc_context | ( | void | ) |
Allocate an AVFormatContext.
avformat_free_context() can be used to free the context and everything allocated by the framework within it.
Definition at line 160 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().
| void avformat_free_context | ( | AVFormatContext * | s | ) |
Free an AVFormatContext and all its streams.
| s | context to free |
Definition at line 141 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().
| const AVClass* avformat_get_class | ( | void | ) |
Get the AVClass for AVFormatContext.
It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.
Definition at line 196 of file options.c.
Referenced by ifile_open(), opt_default(), show_format_opts(), show_help_default(), and validate_enc_avopt().
| const AVClass* av_stream_get_class | ( | void | ) |
It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.
| const AVClass* av_stream_group_get_class | ( | void | ) |
Get the AVClass for AVStreamGroup.
It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.
| const char* avformat_stream_group_name | ( | enum AVStreamGroupParamsType | type | ) |
Definition at line 324 of file avformat.c.
Referenced by get_stream_group_type(), and show_stream_group().
| AVStreamGroup* avformat_stream_group_create | ( | AVFormatContext * | s, |
| enum AVStreamGroupParamsType | type, | ||
| AVDictionary ** | options | ||
| ) |
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().
| s | media file handle |
Definition at line 421 of file options.c.
Referenced by iamf_read_header(), mov_parse_tiles(), mov_read_iacb(), and of_parse_group_token().
| AVStream* avformat_new_stream | ( | AVFormatContext * | s, |
| const struct AVCodec * | c | ||
| ) |
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().
| s | media file handle |
| c | unused, does nothing |
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_iacb(), 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(), 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().
| int avformat_stream_group_add_stream | ( | AVStreamGroup * | stg, |
| AVStream * | st | ||
| ) |
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().
| stg | stream group belonging to a media file. |
| st | stream in the media file to add to the group. |
| 0 | success |
| AVERROR(EEXIST) | the stream was already in the group |
| another negative error code | legitimate errors |
Definition at line 494 of file options.c.
Referenced by iamf_read_header(), mov_parse_tiles(), mov_read_iacb(), and of_parse_group_token().
| AVProgram* av_new_program | ( | AVFormatContext * | s, |
| int | id | ||
| ) |
Definition at line 334 of file avformat.c.
Referenced by dash_read_header(), hls_read_header(), of_add_programs(), pat_cb(), and sdt_cb().
1.8.17