[x264-devel] VBV Rate Control Challenge

[Mike Kazmier]

> Slight correction: those two frames _can_ fit in the VBV, just barely:
> it's just that the entire sequence that follows, when combined with
> those two, even maxed out at QP51, still can't fit.
> 
> In other words, this clip need VBV emergency mode, no chance otherwise.

But... Even if you take your VBV bufsize up to, say, 9000.... we still have underflows.  One should reason that with the 50% larger buffer and... perhaps better lookahead vbv allocation, we could survive?