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Defined in avformat.h

Write a packet to an output media file.

The packet shall contain one audio or video frame.
The packet must be correctly interleaved according to the container specification, if not then av_interleaved_write_frame must be used.

int av_write_frame(AVFormatContext *s,
                   AVPacket *pkt);

AVFormatContext *s

Media file handle, a pointer to a AVFormatContext.

AVPacket *pkt

The AVPacket, which contains the stream_index, buf/buf_size, dts/pts, …

Returns < 0 if error, = 0 if OK, 1 if end of stream wanted.

av_interleaved_write_frame()

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