[MPlayer-cvslog] CVS: main/DOCS/tech encoding-guide.txt,NONE,1.1

Guillaume POIRIER guillaume.poirier at etudiant.univ-rennes1.fr
Wed Jun 22 21:15:28 CEST 2005

Le mercredi 22 juin 2005 à 11:12 -0400, Rich Felker a écrit :
> On Wed, Jun 22, 2005 at 11:39:30AM +0200, Guillaume Poirier CVS wrote:
> > III.4. Notes on A/V sync
> > 
> > MEncoder's audio/video synchronization algorithms were designed with
> > the intention of recovering files with broken sync. However they seem
> > to cause unnecessary skipping and duplication of frames, and possibly
> > slight A/V desync, when used with proper input. It is therefore
> > recommended that you switch to basic A/V sync with the -mc 0 option,
> > or put this in your ~/.mplayer/mencoder config file, as long as you
> > are only working with good sources (DVD, TV capture, high quality
> > MPEG-4 rips, etc) and not broken ASF/RM/MOV files.
> This section is highly questionable. Unfortunately broken DVDs are the
> main time non-zero -mc values seem to be needed... so I'm not sure
> what we should do with it. We really need to fix mencoder's handling
> of audio so that -mc 0 always works.

My experiences also show that lots of times you need -mc 0, and few
times it works without. Indeed, that would be great if that could get
fixed... but by whom? :-)


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