[x264-devel] one question about two-pass rate control

[qw]

Hi,

x264 adopts several rate control methods, one of which is of two pass. For 1st pass, x264 encoder will generate two files, i.e. rate control file and mb tree file. For 2nd pass, x264 encoder will read the two files, and estimate qp value to encode each frame.

It's redundant to encode video sequence twice, one for each pass. Is it possible to encode video sequence once without making big change into rate control algorithm?

Thanks!

B.R.

Andrew
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