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Originally Posted by MacroBull
Among qp,crf,bitrate mode,which is better to use?
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CQP is rarely a good idea, but otherwise it depends on what you are targeting. CRF is good for maintaining constant quality across a number of encodes. 2-pass lets you pick a target file size.
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I don't know the difference in ripping result between qp and crf,who can tell me?
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http://mewiki.project357.com/wiki/X264_Settings#crf
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I think bitrate can control all the options,it can give the best ripping result,it can be even changed toward qp mode,is that right?
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CRF and 2-pass give the same quality/bitrate. Both can be tuned towards CQP by using qcomp closer to 1.0.
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As for presets,under qp or crf mode,is it that change the persets can only lower the bitrate but not improve quality?
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Both quality and bitrate can change, but slower presets give higher quality/bitrate.
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Another question about anime deblocking in rapid scene, dark scene and fade scene, I met a lot of block and increase bitrate/deblocking,psy rf,trellis doesn't help.It seems increasing Adaptive quantizer reduced the block,why?
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AQ redistributes bits within the video, so that flat, low-complexity areas get more than they would otherwise.