On Wednesday, May 18, 2016 6:17:04 AM CDT Peter Rabbitson wrote: > According to a test image taken from > http://www.4p8.com/eric.brasseur/gamma.html ffmpeg's scaler does not > properly deal with... well scaling. > > The following pipeline produces a "SUCKS" verdict on ffmpeg 2.8.6: > > curl -s http://www.4p8.com/eric.brasseur/gamma-1.0-or-2.2.png \ > > | ffmpeg -f image2pipe -i - \ > > -vf 'scale=w=iw/2:h=ih/2' -vframes 1 \ > -c:v bmp -f image2pipe - \ > > | ffplay -i - > > Is this a real issue worthy of a bugreport, or is the test image/method > flawed? >
curl -s http://www.4p8.com/eric.brasseur/gamma-1.0-or-2.2.png | \ ffmpeg -f image2pipe -i - \ -vf 'eq=gamma=0.454545,scale=w=iw/2:h=ih/2,eq=gamma=2.2' \ -vframes 1 -c:v bmp -f image2pipe - | ffplay -i - _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
