[MPlayer-users] Cannot compress audio

[Mario Valle]

I'm using mencoder pre3 to convert old MOV files to AVI.
No problem for the video part, but seems that I cannot compress the audio track.

The following command works, but the audio track is far bigger than the video one:
    mencoder -ovc lavc -lavcopts BlaBlaBla -oac pcm -o movie.avi movie.mov

Instead:
    mencoder -ovc lavc -lavcopts BlaBlaBla -oac mp3lame -o movie.avi movie.mov
and:
    mencoder -ovc lavc -lavcopts BlaBlaBla -oac copy -o movie.avi movie.mov

end with:
MP3 audio selected
Building audio filter chain for 22254Hz/1ch/8bit -> 22254Hz/1ch/16bit...
Writing AVI header...
Pos:   0.8s     21f ( 0%)   0fps Trem:   0min   0mb  A-V:0.080 [0:0]
Skipping frame!
<< a lot of them, one every 9 or 10 frames >>
Writing AVI index...
Fixing AVI header...

Video stream:    0.800 kbit/s  (99 bps)  size: 1580 bytes  15.800 secs  437 frames

Audio stream:      nan kbit/s  (-2147483648 bps)  size: 0 bytes  0.000 secs

Am I doing something clearly stupid on what?
Thanks for any help

				mario

-- 
Ing. Mario Valle
Data Mining and Visualization Group         | http://www.cscs.ch/~mvalle
CSCS, Swiss Center for Scientific Computing | Tel:  +41 (91) 610.82.60
Via Cantonale, 6928 Manno, Switzerland      | Fax:  +41 (91) 610.82.82