[MPlayer-users] Can't encode a DVD to an AVI with MONO sound :(

Patrick Kirchner patrickkirchner at yahoo.com
Fri Feb 28 17:35:08 CET 2003

 D Richard Felker III <dalias at aerifal.cx> wrote:

On Fri, Feb 28, 2003 at 07:34:26AM -0800, Patrick Kirchner wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hello,
> I've looked through all the FAQ's and tips on encoding and can't encode a MONO .avi file from a DVD.
 I have a very slow computer that will play 320x240 MONO avi's very well.
> Here's some of the things I've tried:
> 3Pass attemp:
 mencoder -dvd 1 -dvd-device /dev/cdrom1 -ovc frameno -oac mp3lame -lameopts vbr=3 vol=10 mode=3 -o frameno.avi
^ ^
You need colons here!!!!! RTFM.

Thanks Rich,

You were right, I did need colons between vbr=3:vol=10:mode=3, but even that is not creating a MONO avi:

Checking audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/2ch/16bit...
AF_pre: af format: 2 bps, 2 ch, 48000 hz, little endian signed int
AF_pre: 48000Hz 2ch Signed 16-bit (Little-Endian)
AO: [oss] 48000Hz 2ch Signed 16-bit (Little-Endian) (2 bps)
Building audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/2ch/16bit...

I've even tried just -oac mp3lame -lameopts mode=3 (don't need any colons ;) but that still results in a two channel (which I stereo I assume) .avi file.

If anyone could offer any further suggestions, I'd be most humbly appreciative.

Thanks much,


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