[MEncoder-users] How to get ".mp3" audio rather than "mp4a" audio?

[Sheppard, Mark]

On 15 November 2010 16:54 The Wanderer wrote:
> On 11/15/2010 06:55 AM, Sheppard, Mark wrote:
> > So it looks like the audio produced is now mp4a rather than .mp3.
> > I've been trying to work out how to force the old behaviour of
> > producing .mp3 audio, but I've not had any success.  The mencoder man
> > page does mention the "-fafmttag 0x55", but that didn't help :-(.
> > Does anyone know what I need to put on the command line to get .mp3?
> 
> As Bernd Butscheidt mentioned, '-oac mp3lame' would be the most likely
> answer. However, there's one critical piece of information which you
> left out, which should always be included in just about any problem
> report or help request.

I'm already using "-oac mp3lame".

> What's the command line you're currently using?

Sorry - forgot that!  Here's an example command line:

mencoder 588.wmv -o 588.mp4 -oac mp3lame -lameopts cbr:br=128 -channels 2 -srate 44100 -ofps 25 -of lavf -ovc x264 -x264encopts bitrate=1500:subq=5:8x8dct:frameref=2:threads=auto:global_header:nocabac:nob_adapt:bframes=0:keyint=50 -lavfopts format=mp4 -vf harddup,scale=1280:720

I've got lame 3.98.4 installed (http://packages.ubuntu.com/maverick/lame).  Downgrading back to the previous version of 3.98.2 (http://packages.ubuntu.com/karmic/lame) didn't help, so I don't think it's lame which has changed behaviour.

Maybe it's something to do with libavcodec or libavformat, which got upgraded from 0.5 to 0.6?  I can't downgrade them individually to test this because the mencoder package only works with >= 0.6.

Cheers,
Mark.