[MPlayer-users] Mencoder: (TIVO) Audio syc problems.

D Richard Felker III dalias at aerifal.cx
Sat Jul 5 16:17:45 CEST 2003


On Sat, Jul 05, 2003 at 03:11:03PM +0200, Attila Kinali wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> On Wed, 2 Jul 2003 22:19:02 -0700 (PDT)
> "Net Dragon" <netdragon at dragonspot.net> wrote:
> 
> 
> First of all: NEVER PRESS REPLY WHEN STARTING A NEW THREAD!
> 
> There are people out there who use an intelligent MUA
> 
> Please read http://learn.to/edit_messages and 
> http://www.xs4all.nl/~hanb/documents/quotingguide.html
> 
> > [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> > Hey all. Well I have learned volumes about Mencoder int he last week. I
> > have everything the way I need it with Mencoder. I am using a 3 pass
> > encoding as you can see below. I let it do the default and skip frames if
> > needed and the audio is off right away, but it does not stray away until
> > it is literally over a minute off in a 2 hour video. The files I am
> > encoding are out of a Tivo. Res is 480x480 and sound is 48Khz. I am
> > wondering if I leave Noskip on but transcode the audio to 44Khz if that
> > will solve my problem? Or turn no skip back off and figure out how to setu
> > the audio offset?
> 
> Search the mailinglist archive it was discussed at least a hundred times
> 
> > How do I tell lame/Mencoder to process the sound to 44Khz?
> 
> You dont. Unless there is really a reason to change the sampling
> rate of the audio stream leave it alone.
> If you really ought to you have to resample it with -af.

Wrong, you definitely should change it. When encoding movies, you
don't want to waste too many bits on audio, and at the same bitrate,
44100 will sound much better than 48000.

Also, 44100 has the benefit of playing on all sane hardware without
resampling.

With that said, the option is -srate 44100.

Rich



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