Return the LIBAVFORMAT_VERSION_INT constant.

Definition at line 56 of file utils.c.

Return the libavformat build-time configuration.

Definition at line 62 of file utils.c.

Return the libavformat license.

Definition at line 67 of file utils.c.

Initialize libavformat and register all the muxers, demuxers and protocols.

If you do not call this function, then you can select exactly which formats you want to support.

See Also

av_register_input_format()

av_register_output_format()

Definition at line 52 of file allformats.c.

Referenced by ff_load_image(), main(), and movie_common_init().

Definition at line 52 of file format.c.

Definition at line 61 of file format.c.

Do global initialization of network components.

This is optional, but recommended, since it avoids the overhead of implicitly doing the setup for each session.

Calling this function will become mandatory if using network protocols at some major version bump.

Definition at line 3960 of file utils.c.

Referenced by main().

Undo the initialization done by avformat_network_init.

Definition at line 3972 of file utils.c.

Referenced by do_exit(), ffmpeg_cleanup(), main(), and term_init().

If f is NULL, returns the first registered input format, if f is non-NULL, returns the next registered input format after f or NULL if f is the last one.

Definition at line 36 of file format.c.

Referenced by av_find_input_format(), av_probe_input_format3(), format_child_class_next(), probe(), show_format_opts(), and show_formats().

If f is NULL, returns the first registered output format, if f is non-NULL, returns the next registered output format after f or NULL if f is the last one.

Definition at line 44 of file format.c.

Referenced by av_guess_format(), format_child_class_next(), show_format_opts(), and show_formats().

Allocate an AVFormatContext.

avformat_free_context() can be used to free the context and everything allocated by the framework within it.

Definition at line 106 of file options.c.

Referenced by avformat_alloc_output_context2(), avformat_open_input(), ff_mov_read_stsd_entries(), ff_rtp_chain_mux_open(), ff_wms_parse_sdp_a_line(), hls_mux_init(), hls_read_header(), http_receive_data(), ism_write_header(), mpegts_write_header(), open_input_file(), prepare_sdp_description(), read_ffserver_streams(), read_gab2_sub(), read_thread(), rtp_new_av_stream(), sap_read_header(), and segment_mux_init().

Free an AVFormatContext and all its streams.

Parameters

s context to free

Examples:

doc/examples/muxing.c.

Definition at line 3190 of file utils.c.

Referenced by avformat_alloc_output_context2(), avformat_close_input(), avformat_open_input(), close_slaves(), ff_mov_close_hinting(), ff_rtp_chain_mux_open(), ff_rtsp_undo_setup(), ffmpeg_cleanup(), hls_read_header(), hls_write_header(), hls_write_trailer(), ism_free(), main(), mpegts_write_end(), mpegts_write_header(), sap_write_close(), seg_write_header(), seg_write_packet(), seg_write_trailer(), and segment_start().

Get the AVClass for AVFormatContext.

It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.

See Also

av_opt_find().

Definition at line 120 of file options.c.

Referenced by opt_default(), show_format_opts(), and show_help_default().

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().

Parameters

c If non-NULL, the AVCodecContext corresponding to the new stream will be initialized to use this codec. This is needed for e.g. codec-specific defaults to be set, so codec should be provided if it is known.

Returns

newly created stream or NULL on error.

Examples:

doc/examples/muxing.c.

Definition at line 3261 of file utils.c.

Referenced by add_dstream(), add_stream(), adp_read_header(), adts_aac_read_header(), adx_read_header(), aea_read_header(), afc_read_header(), aiff_read_header(), amr_read_header(), apc_read_header(), ape_read_header(), ape_tag_read_field(), aqt_read_header(), asf_read_picture(), asf_read_stream_properties(), ass_read_header(), ast_read_header(), audio_read_header(), avi_read_header(), avisynth_create_stream(), avpriv_dv_init_demux(), avr_read_header(), avs_read_packet(), bfi_read_header(), bmv_read_header(), cdata_read_header(), cdxl_read_packet(), cin_read_header(), concat_read_header(), create_audio_stream(), create_new_audio_stream(), create_stream(), daud_header(), dc1394_read_common(), decode_main_header(), dfa_read_header(), dshow_add_device(), dtshd_read_header(), dv_extract_audio_info(), dxa_read_header(), ea_read_header(), epaf_read_header(), fbdev_read_header(), ff_flac_parse_picture(), ff_id3v2_parse_apic(), ff_raw_audio_read_header(), ff_raw_data_read_header(), ff_raw_video_read_header(), ff_rtp_chain_mux_open(), ff_spdif_read_packet(), ffm2_read_header(), ffm_read_header(), film_read_header(), flac_read_header(), frm_read_header(), g722_read_header(), g723_1_init(), g729_read_header(), get_attachment(), get_sindex(), gif_read_header(), grab_read_header(), gsm_read_header(), hls_mux_init(), hls_read_header(), idcin_read_header(), iec61883_read_header(), iff_read_header(), ilbc_read_header(), img_read_header(), init_stream(), ipmovie_read_header(), ircam_read_header(), ism_write_header(), iss_read_header(), jacosub_read_header(), lavfi_read_header(), libquvi_read_header(), lmlm4_read_header(), loas_read_header(), lvf_read_header(), lxf_read_header(), matroska_read_header(), microdvd_read_header(), mmf_read_header(), modplug_read_header(), mov_read_covr(), mov_read_trak(), mp3_read_header(), mpc8_read_header(), mpc_read_header(), mpegps_read_packet(), mpegts_push_data(), mpegts_read_header(), mpegts_set_stream_info(), mpegts_write_header(), mpl2_read_header(), mpsub_read_header(), msnwc_tcp_read_header(), mtv_read_header(), mv_read_header(), mxf_parse_structural_metadata(), mxg_read_header(), nc_read_header(), new_output_stream(), new_stream(), nist_read_header(), nsv_parse_NSVs_header(), nut_read_header(), nuv_header(), ogg_new_stream(), oma_read_header(), open_slave(), parse_strk(), parse_vtrk(), pcm_read_header(), pjs_read_header(), pmp_header(), pmt_cb(), pulse_read_header(), pva_read_header(), pvf_read_header(), qcp_read_header(), r3d_read_red1(), rawvideo_read_header(), read_desc_chunk(), read_frame(), read_header(), read_header_gme(), read_packet(), realtext_read_header(), redspark_read_header(), rl2_read_header(), rm_read_header(), rm_read_header_old(), roq_read_packet(), rpl_read_header(), rsd_read_header(), rso_read_header(), sami_read_header(), sap_fetch_packet(), sap_read_header(), sbg_read_header(), segment_mux_init(), seq_read_header(), siff_parse_vbv1(), smacker_read_header(), smjpeg_read_header(), smush_read_header(), sol_read_header(), sox_read_header(), srt_read_header(), str_read_packet(), subviewer1_read_header(), subviewer_read_header(), swf_read_packet(), tak_read_header(), tedcaptions_read_header(), thp_read_header(), tmv_read_header(), tta_read_header(), txd_read_header(), v4l2_read_header(), vc1t_read_header(), vfw_read_header(), vid_read_packet(), vivo_read_header(), vmd_read_header(), voc_read_header(), vplayer_read_header(), vqf_read_header(), wc3_read_header(), webvtt_read_header(), wsaud_read_header(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_header(), x11grab_read_header(), xa_read_header(), xmv_read_header(), xwma_read_header(), yop_read_header(), and yuv4_read_header().

Definition at line 3320 of file utils.c.

Referenced by hls_read_header(), pat_cb(), and sdt_cb().