[MEncoder-users] h264 3-pass mode

[Loren Merritt]

On Tue, 16 Jan 2007, Justin Randall wrote:

> This is the way that x264 and mencoder chose to implement the pass
> filter. Don't ask me why they did it that way, it probably made the
> most sense at the time.

Because it still makes the most sense to me. First pass is pass=1 and last 
pass is pass=2 because that's how they were before 3-pass mode existed, 
and they're still the most common cases. Then, knowing how multipass is 
implemented, I think of them as flags: middle pass does both the 
computations of first pass and the computations of last pass, so it's 
pass=1|2=3.

--Loren Merritt