Quote:
Originally Posted by K.i.N.G
I found that bumping the AQ-Strength quite a lot can be helpful to retain the low contrast details better. (Since more AQ-Strength will focus the bits more on flatter/textured areas instead of edges/lines/higher contrast areas, thus it balances things out a bit better, though obviously not ideal)
Which confirms my initial thought that x265 doesn't take into account how HDR footage will be displayed and analyses it the same way as it analyses SDR footage. (so, low contrast areas will be seen by x265 as even flatter areas and thus will be blurred out or even result in banding).
Currenly I'm encoding some HDR footage (it is 1080p though) with AQ-Strength bumped to 1.8, Qcomp to 0.7 and SubMe 7... Which brings it a bit 'closer' to expected results (still not as good as it could be imho).
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Could you share your whole command line?
are you using --hdr-opt?
I find it interesting that folks are talking about subme 7 as being useful. That's two steps beyond placebo! I'd love to see some A/B comparisons where folks have seen a difference with it.