Quote:
Originally Posted by seanxu_2010
thanks for your explain, if bitrate < maxrate, what will happened?
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Then you'll have capped VBR mode, where the local bitrate can't exceed maxrate.
Quote:
Originally Posted by seanxu_2010
and another question is when we set VBV, has the --rc-lookahead been set as a default value? because, if not, how the x264 can guarantee the constant bitrate in a 10 seconds perspective?
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RC-lookahead is on by default, but x264's VBV works without it as well, via a combined reactive/predictive algorithm.