[MPlayer-users] Alternative 3-pass methods

[rcooley]

On Mon, 21 Jun 2004 21:49:22 -0700
Jack <lt at speakeasy.net> wrote:

> When I add -mc 0 and -noskip, it starts off fine, but very slowly and
> gradually drifts out of sync.  

Have you tried -mc 0 without -noskip?  It may be that you have mixed-fps
video, and it can't drop frames to maintain 23.976 output when the video
switches to 29.97, or whatnot.


> I would like to do 3 pass encodes without having to deal with
> frameno's brokenness.

What's wrong with 2-pass encoding?  Sure, you encode the audio twice,
but it's such a small part of the encoding process that it's not
noticable.

Anyhow, for editing reasons, I do something like reverse 3-pass
encoding.  For vpass 1/2 I do "mencoder -oac copy -ovc lavc" , then on
the resulting file (after editing) I use the avi as source, and do
"mencoder -mc 0 -oac mp3lame -ovc copy".  Without mc, it drops the first
keyframe for some strange reason.  Never had any sync problems with that
method, although I don't know why you'd want to do that if you aren't
editing the resulting file, as I am.