pointer to the picture/channel planes.
This might be different from the first allocated byte
Some decoders access areas outside 0,0 - width,height, please
see avcodec_align_dimensions2(). Some filters and swscale can read
up to 16 bytes beyond the planes, if these filters are to be used,
then 16 extra bytes must be allocated.
pointer to the picture/channel planes. This might be different from the first allocated byte
Some decoders access areas outside 0,0 - width,height, please see avcodec_align_dimensions2(). Some filters and swscale can read up to 16 bytes beyond the planes, if these filters are to be used, then 16 extra bytes must be allocated.