3 ms·
A little bit. Configured for constant bit-rates, x264 can still do a bit of jiggling on the assumption that there's a buffer, which helps with quality in genera
by Filligree 9y ago
A little bit. Configured for constant bit-rates, x264 can still do a bit of jiggling on the assumption that there's a buffer, which helps with quality in general. Two-pass gives it information to do that better.
But constant-quality modes are far superior when you're not bandwidth-constrained.
- Dylan16807 9y agoSingle-pass will also juggle within a seconds-long buffer. Does two-pass help on that micro level, in addition to the way it can allocate bits across an entire file?
- sp332 9y agox264 has a ton of settings for that kind of thing. This page has a good summary: https://en.wikibooks.org/wiki/MeGUI/x264_Settings#qpstep https://en.wikibooks.org/wiki/MeGUI/x264_Settings#qpstep