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Old 2008-12-25, 08:03   Link #9
Dark Shikari
x264 Developer
 
 
Join Date: Feb 2008
Quote:
Originally Posted by Soichiro View Post
The easiest way to compare would be to compare PSNR and SSIM values (which means getting rid of the --no-psnr and --no-ssim flags). Of course, this isn't the best way (which would be using your eyes), but it is simple and generally effective, as long as Psy optimizations are not being compared.
AQ counts as a psyopt, remember...
Quote:
Originally Posted by guest0815 View Post
How would I go about evaluating its use? I compared a few before/after frames and all I noticed was a slight image degradation but flat areas (provided I understand what those are correctly. I used backgrounds of a cloudy sky, a wooden table and a marbled floor) looked pretty much the same. Pixel may have been shuffled around a little bit but it didn't seem like an improvement to me. The raws could have been too smooth or maybe x264 is just so awesome that there is no detail lost to begin with . If I can't make out a visual difference should I have it turned on or off then?
You should general leave it on unless there's good reason not to. Also, all comparisons should be done at the same bitrate.
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