[FFmpeg-user] In and out-range Scale option able to correct 0-255 video to 0-235?
Carl Eugen Hoyos
cehoyos at ag.or.at
Thu May 21 10:05:05 CEST 2015
tim nicholson <nichot20-at-yahoo.com <at> ffmpeg.org> writes:
> > It seems to me that the scale filter is so smart
> > that it doesn't scale if the input and output
> > resolution and input and output colourspace
> > are identical.
> > Even worse, both the filter and the software
> > scaler are smart enough to skip actual scaling,
> > so fixing the issue in the scale filter is not
> > sufficient...
> This sounds vaguely familiar and istr it only works
> when going YUV->RGB, but my memory could be shakey.
It works fine here for YUV->YUV if I apply the vf_scale
patch I posted on -devel and if I disable the "smart"
detection in libswscale.
More information about the ffmpeg-user