Re: [Semi-OT] Cropping a letterbox MPEG-2 file is easy enough...

[Ron Johnson <ron.l.johnson@cox.net>]

On 12/11/2010 02:31 AM, Phil Requirements wrote:
> On 2010-12-10 22:03:55 -0600, Ron Johnson wrote:
> > But how do I save the output?
> >
> > After reading the mplayer and ffmpeg man page and Googling, these
> > are the three methods I tried, but none of them work.
> >
> > $ mplayer foo.mpeg -vf crop=720:352:0:64 \
> >      -dumpstream -dumpfile bar.mpeg
> >
> > $ mplayer foo.mpeg -vf crop=720:352:0:64 -o bar.mpeg
> >
> > $ mencoder foo.mpeg -vf crop=720:352:0:64 \
> >      -ovc copy -oac copy -o bar.mpeg
> >
> > $ ffmpeg -i foo.mpeg -vf crop=720:352:0:64 \
> >      -vcodec copy -acodec copy bar.mpeg
>
> How about this one:
>
>      mencoder foo.mpeg \
>      -vf crop=720:352:0:64 \
>      -oac copy \
>      -ovc lavc \
>      -lavcopts vcodec=mpeg2video \
>      -o newfile.avi

Does mencoder peek at the outfile extension to determine container type?

> This one is a little tricky, because mencoder will transcode
> your file if you're not careful. So this part...
>
>      -ovc lavc -lavcopts vcodec=mpeg2video
>
> ...needs to change according to what your source material is.
> I think the above might work for DVD material?

I'll try that.

--
Seek truth from facts.