Quote:
Originally Posted by Hotte
- I do not have any raw video file but just a 4K 10bit 4.2.2 25bit mov out of a Panasonic G9
- I export this from Edius-X with Canopus HQX 10 bit. Normally this is perfect input for AVS+, but today I just load it into VDub2
- In VDub2 this becomes YUV422P16
- Select Cineform as compressor, 10 bit, YUV422, Fast Recompress: Negotiation Error
- Select Cineeform 16-bit, YUV422, Fast Recompress: Negotiation Error
- So what do you recommend to do next ? Normal / Decode Format - Which ?
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For a native 10bit file (not stacked), Cineform in vdub2 requires normal or full recompress. It might be the same for stacked , not sure. I would avoid stacked all together if possible.
You can verify output with other tools, such as 10bit waveforms. ffmpeg has one, and avisynth does too now. If you test a 0-1023 gradient, you will see if there were problems somewhere , such as an 8bit intermediate step somewhere, which will manifest as gaps
One bizarre issue with some DCT based codecs like DNxHR/DNxHD and prores to a lesser extent is severe noise on some types of patterns like small checkers. It's not subsampling related (4:4:4 is affected too). Official Avid and ffmpeg implementations are affected. I've reproduced it on other patterns, other colors, other grid sizes. You can see some of the disussion here starting around post 672 . x264 (also dct based) , cineform (wavelet based) are unaffected
https://forum.doom9.org/showthread.php?p=1855173