[FFmpeg-user] Full to studio levels
phil_rhodes at rocketmail.com
Mon Feb 3 13:38:31 CET 2014
I can basically confirm your impression that this isn't quite so easy to get right.
You're not the only person to ever have hit this - it has been discussed for quite some time (years). A friend of mine had to write custom software using the ffmpeg libraries mainly because he could never figure out a way to handle certain luma scaling issues.
As you've found, there appears to be a few automatic behaviours which are a bit unhelpful, which I suspect you're somehow switching off with your filter selections.
Be prepared for the possibility that there is no lossless way to fix this from the commandline.
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