What's the difference? I suppose it is: BGR4: 1 2 BGGR BGGR BGGR BGGR while BGR4_BYTE: 1 1 AAAA BGGR AAAA BGGR is it right? Also is BGR4 meant to be considered a PIX_FMT_BITSTREAM? Regards. -- FFmpeg = Forgiving Fast Mastering Programmable Eager Ghost