On Sun, 2017-06-18 at 13:01 +0200, Francesco Poli wrote: > [...] > jpegdec → rank 256 > avdec_mjpeg → rank 64 > > It then sets swapped ranks with set_rank() : > > jpegdec → rank 64 > avdec_mjpeg → rank 256 > > which are checked again and found to be set as desired. > > Nonetheless, the AVI file is still played at degraded quality, > as if nothing had changed at all.
The problem here is that avdec_mjpeg needs jpegparse, jpegdec doesn't. And jpegparse has a rank of 0, so will never be automatically used. Try setting the jpegparse rank to 256 too, avdec_mjpeg to 256 and jpegdec to 0.
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