[MPlayer-users] Transcoding from one aspect ratio to another

Rolf Ernst rolf.ernst at silverlightning.org
Wed Nov 3 22:53:05 CET 2010

>> I tried  -vf-add dscale=1280:800:0,scale=0:0,expand=::::::16
>> $ mencoder myvid.avi -mf fps=30 -o myvid.mp4 -ovc lavc -lavcopts 
>> vcodec=mpeg4 -vf-add dscale=1280:800:0,scale=0:0,expand=::::::16
>> MEncoder SVN-r31628-4.4.4 (C) 2000-2010 MPlayer Team
>> Option vf-add: dscale doesn't exist.
>> Exiting... (error parsing command line)
> I retried like this:
> mencoder inception.avi -mf fps=30 -oac lavc -ovc lavc -lavcopts 
> abitrate=128 -vf-add scale=1280:800:0,scale=0:0,expand=::::::16 -o 
> inception.mp4
> This did not work. It yielded  a 4:3 aspect ratio video.
Are you playing back with mplayer or something odd? If so, just specify 
mencoder inception.avi -vf scale=1280:800 ...

Forget all the other stuff. It will indeed give you 4:3. I think the 
author assumed that this is what you wanted. 4:3 with borders.


"My friends, watch out for the little fellow with an idea"

Tommy Douglass

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