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

[Phil Requirements <simultaneous@comcast.net>]

On 2010-12-11 10:52:02 -0600, Ron Johnson wrote:
> 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?

Sorry! The avi thing is a typo. I had written my example command, then
I changed it to match your example command, but I forgot to change the
name of the output file. It should have read:

     mencoder foo.mpeg \
     -vf crop=720:352:0:64 \
     -oac copy \
     -ovc lavc \
     -lavcopts vcodec=mpeg2video \
     -o bar.mpeg

Sorry for the confusion,

Phil