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codec-specific defaults to be set, so codec should be provided if it is known. If non-NULL, the AVCodecContext corresponding to the new stream will be initialized to use this codec. User is required to call avcodec_close() and avformat_free_context() to clean up the allocation by avformat_new_stream(). When muxing, should be called by the user before avformat_write_header(). If the flag AVFMTCTX_NOHEADER is set in s.ctx_flags, then it may also be called in read_packet(). When demuxing, it is called by the demuxer in read_header().

Function Documentation ◆ avformat_version() More.Īv_new_program ( AVFormatContext * s, int id)įunctions for querying libavformat capabilities, allocating core structures, etc.

More.Īv_stream_get_side_data (const AVStream *stream, enum AVPacketSideDataType type, int * size) More.Īv_stream_new_side_data ( AVStream *stream, enum AVPacketSideDataType type, int size)Īllocate new information from stream. Wrap an existing array as stream side data. More.Īv_stream_add_side_data ( AVStream *st, enum AVPacketSideDataType type, uint8_t * data, size_t size) More.Īvformat_new_stream ( AVFormatContext * s, const AVCodec * c)Īdd a new stream to a media file. More.Īvformat_free_context ( AVFormatContext * s)įree an AVFormatContext and all its streams. Undo the initialization done by avformat_network_init. More.ĭo global initialization of network libraries. Return the libavformat build-time configuration. Return the LIBAVFORMAT_VERSION_INT constant. Functions for querying libavformat capabilities, allocating core structures, etc.