[MPlayer-users] trying to convert MJPEG

[Dave Puryear]

Steve Kleene wrote:
> On Tue, 17 Apr 2007 08:45:46 +0000 (UTC), John Brown wrote:
> 
>> So you're saying that the same command line that does DVD-to-MPEG1
>> does not convert the camera file to MPEG1?
> 
> That's correct.  In single-pass form, the command that works for DVD
> is: 
> 
> mencoder dvd://1 \
>   -oac twolame \
>   -ovc lavc -lavcopts vcodec=mpeg1video:vbitrate=2000:mbd=2:trell \
>   -of lavf -lavfopts
> format=mpg:i_certify_that_my_video_stream_does_not_use_b_frames \ 
>   -o output.mpg
> 
> When I applied this to the file from the video camera (lizard.avi),
> mencoder 
> failed with:
> 
>   twolame_get_samplerate_index: 11024 is not a legal sample rate
> 
> This error was explained to me here, and I modified the command to be:
> 
> mencoder lizard.avi \
>   -oac twolame -twolameopts br=128 -srate 44100 -af
> lavcresample=44100 \ 
>   -ovc lavc -lavcopts vcodec=mpeg1video:vbitrate=1000:mbd=2:trell \
>   -of lavf -lavfopts
> format=mpg:i_certify_that_my_video_stream_does_not_use_b_frames \ 
>   -o output.mpg
> 
> With this, mencoder produced a file that plays fine in mplayer.  On
> XP, it 
> has good audio but the video is defective.  The image is visible, but
> there 
> are lots of blotches of color popping up here and there.
> 
> 
When sending short vids to relatives running win2000 and xp, I've had
good luck with lavc msmpeg4v2 video and lavc mp3 in an avi container.

HTH,
Dave P.