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Old 14th June 2006, 00:07   #3  |  Link
foxyshadis
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That might be due to the difference between P and B frame quantizers; what if you lower the crf to bring the first bitrate in line with the other? Try to control all but one variable to make useful conclusions. What if you measure with SSIM? Most importantly, are they adaptive?

If controlling for bitrate results in higher quality in 3-b still, obviously chuck it. If it shows 16-b is higher, by metrics and visual or just metrics and no visual difference, then you can make a rough recommendation: Use a lower crf when using lots of b-frames with anime.
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