[Cin] Source=ProRes; render=low quality

[Andrea paz]

Thanks, Andrew.
I remember a post by Phyllis where she indicated that "scaling
equation" only works for playback on the timeline and only for X11,
not OpenGL.
Anyway I tried to use it (X11 and OpenGL), as well as RGBA-FLOAT, 8
and 10bit, increase bit rate, etc. But nothing works. Scaling always
leads to bad results.

I have a QHD screen, if I use OBS or SimpleScreenRecorder and tell
them to go out with FullHD, the results are not good, everything is
blurred. But they're not as bad as the resize inside of CinGG.
I'm sure I'm wrong, because I'm ignoring something that's fundamental.