Quote:
Originally Posted by poisondeathray
Of course, and 50dB is usually great for intermediates.
But it seems the min values are lower than expected. This is qp 1 intra. You should be getting results higher than prores xq or cineform fs2.
PSNR is good for is detecting lossless (or not), and indicating trends, and potential workflow problems
So I'm wondering if something else going on there
|
I did find two issues.
1) The "retain sub-black and super-white data" in Resolve's export has to be checked.
2) You have to also use z.lib explicitly set to full range, the matrix and transfer coefficients seem to have no effect, but the range certainly does.
I also found that if you're using the internal avisynth functions converting to 8 bit first then to YV12 gives a slightly better PNSR score. I was not able to find a matrix for the internal function that gave similar results.
Here's the best z.lib/avsresize result I was able to get:
Here's the best internal function result I could get:
