[MEncoder-users] Audio sync problems

[Rich Felker]

On Sun, Nov 27, 2005 at 11:15:16AM +0100, Reimar Döffinger wrote:
> Hi,
> On Sat, Nov 26, 2005 at 12:43:20PM -0800, Karl Mitchell wrote:
> > I have also tried using -mc (values of 0, 0.1 and 1), with no success.  
> > -oac copy seems to produce similarly out of sync results.
> 
> If using -mc 0 you should usually use -noskip as well.

No, they're really unrelated aside from the fact that both affect
if/how frames are dropped and duplicated.

-mc 0 prevents frame drop/dup for a/v sync purposes.

-noskip prevents correction of the video stream (independent of audio)
for excess or too few frames in the case of framerate change, vfr->cfr
encoding, frame-dropping filters, ...

> Just in case you could also add -vf harddup

It's not needed for avi, but may be needed if remuxing into different
formats later.

Rich