[MEncoder-users] Is it possible to make Mencoder encode video file DAR(Display Aspect Ratio) same as ffmpeg does?

[littlebat]

On Wed, 12 Dec 2012 16:23:16 +0000
Christian Ebert <blacktrash at gmx.net> wrote:

> * littlebat on Wednesday, December 12, 2012 at 20:58:18 +0800
> > 2, Using dsize video filter:
> > /opt/custom/bin/mencoder \
> >  -noconfig all \
> >  -ovc lavc \
> >  -oac pcm \
> >  -lavcopts vcodec=mpeg4:vbitrate=256 \
> >  -vf harddup,scale=176:144,dsize=4/3 \
> >  -of lavf \
> >  -ofps 10 \
> >  -lavfopts format=mkv \
> >  -o "mmm.mkv" \
> >  "108.flv" -ss 0 -endpos 10
> > 
> > Any idea?
> 
> afaik dsize takes a size, not a ratio. That's how I did it before
> switching to ffmpeg (for most purposes):
> 
> -noautoexpand -aspect 176/144 \
> -vf dsize=176:144,scale=176:144,harddup

No, can't get the required DAR yet. Below is my command line:

mencoder \
  -noconfig all \
  -ovc lavc \
  -oac pcm \
  -lavcopts vcodec=mpeg4:vbitrate=256 \
  -noautoexpand -aspect 4:3 \
  -vf dsize=4/3,scale=176:144,harddup \
  -of lavf \
  -ofps 10 \
  -lavfopts format=mkv \
  -o "m.mkv" \
  "108.flv" -ss 0 -endpos 10

I need DAR 1.3333(4/3), but the result DAR is 1.2222(176:144). I
suppose mencoder can't do this work.