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Old 20th August 2013, 22:44   #1  |  Link
Nozdrum
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Problem with dark thin lines in x264 at low bitrates



Is it possible to allocate more bitrate to that kind of lines (in clothes/hairs), detracting it from the backgrounds?

x264 settings:
Code:
--chroma-qp-offset -4 --b-adapt 2 --ref 10 --qcomp 0.70 --qpmin 10 --qpmax 51 --me umh --crf 27 --tune Animation --preset veryslow --bframes 8 --deblock 1:2 --fade-compensate 0.35 --aq-mode 3 --subme 10 --trellis 2 --merange 24 --chroma-qp-offset -4 --threads 2 --keyint 250 --min-keyint 12 --scenecut 45 --aq-strength 0.75
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Old 21st August 2013, 16:28   #2  |  Link
raffriff42
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Line darkening? Don't overdo it.
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Old 22nd August 2013, 11:38   #3  |  Link
feisty2
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it's mpeg4 compression artifacts add "removegrain (11)" in your avs script and add "--deblock 2:2" in your x264 encoding settings
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Old 23rd August 2013, 07:08   #4  |  Link
Selur
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also adaptive quantizer strength is probably the option ment to assign more bit rate to the edges and away from the flat areas.
value < 1: -> less bitrate around edges, more bitrate for flat areas
value > 1: -> more bit rate around edges, less for flat areas
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Old 23rd August 2013, 12:23   #5  |  Link
Dark Shikari
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Quote:
Originally Posted by Selur View Post
also adaptive quantizer strength is probably the option ment to assign more bit rate to the edges and away from the flat areas.
value < 1: -> less bitrate around edges, more bitrate for flat areas
value > 1: -> more bit rate around edges, less for flat areas
Actually it's the reverse; higher AQ strength means less bitrate for edges (though in anime, it usually makes less difference, as nearly all the bitrate goes to the edges either way).
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Old 27th August 2013, 09:15   #6  |  Link
Nozdrum
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Then I'm going to use the default --tune animation aq-str and increase the deblock, any other suggestion for newbies like me? I forgot to metion that I'm using tMod, does it make any difference? this file has some dark scenes, I heard that aq mode 3 helps to improve this kind of scenes. About the line darkening filters, could Toon-v1.1 be the right one?
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Old 28th August 2013, 05:55   #7  |  Link
Selur
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Quote:
Actually it's the reverse;
Thanks for the correction
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