I'm upscaling a movie with Video Enhance AI and want the final codec to be x265. Problem is, it doesn't output x265, only x264 or ProRes 422 HQ.
If I want a "lossless" output that can later be converted to x265 with VirtualDub, which would technically give better quality (even if its not visually distinguishable), x264 with a CRF of 0 or ProRes 422 HQ?
The original video is an old DVD using YUV 420 with an 8 bit depth.
Thanks!
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ProRes uses less space and is visually losless (true lossless won't make much difference since you are upscaling video)
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Crf0 is lossless, but prores never is no matter what setting is used. However, prores color depth is probably overkill when it is 4:2:2 (depends on what processing is subsequently done with it).
Using a nonzero but low figure for crf with x264 would likely be of similar quality but much smaller filesize.
Scott -
Yes, x264 at crf=0 will be lossless if your source has 4:2:0 chroma. If it's 4:2:2 chroma you will lose half the chroma's vertical resolution (x264 will convert 4:2:2 to 4:2:0 before compressing).
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Yes, I didn't mention those other things because the OP said it was a direct rip from DVD which is also 4:2:0. But it is good to know all the options.
Scott -
Looks like no... and the CLI interface doesn't support advanced x264 switches.
So VEIA is converting from 4:2:0 DVD src, internally to RGB, to 4:2:0 , then to x264 output locked to 4:2:0
If the DVD was good quality to begin with , and the model chosen works well for that source, you could theoretically approach 4:2:2 real chroma resolution - you could make an argument against using x264 crf0 in VEIA. But if OP's the "want the final codec to be x265" a 4:2:0 output, then it would not make a difference
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