[MEncoder-users] Cropping fails on DVD

[Jon Cosby]

On Sun, Sep 6, 2009 at 4:38 PM, Grozdan <microchip at telenet.be> wrote:

> 2009/9/6 Jon Cosby <jon.l.cosby at gmail.com>:
> > On Sun, Sep 6, 2009 at 12:02 PM, RC <cooleyr at gmail.com> wrote:
> >
> >> On Sun, 6 Sep 2009 09:26:07 -0700
> >> Jon Cosby <jon.l.cosby at gmail.com> wrote:
> >>
> >> > I'm backing up some DVDs. I'm using a different program to rip them. I
> >> > did a test run on one chapter and got great results, although I got
> >> > wide screen when I intended to get full screen. I then did the entire
> >> > title,
> >>
> >> I hope you realize you've given so very little information that nobody
> >> can possibly help you.  The command-line you used was a good start, but
> >> no output from mencoder/mplayer?  No mention of what you see when
> >> playing the original versus the cropped version.  No mention of
> >> what MPlayer reports is the resolution of the input/output video.
> >>  Nothing to indicate how the crop setting looks with mplayer (before you
> >> use them with mencoder).
> >>
> >
> > Mencoder found a lot of "duplicate frames," but that isn't unusual in my
> > experience. As far as playing it, the borders are still there. What else
> can
> > I say? I used the same numbers that I did on the test chapter, which was
> > cropped in the first run. When I transcoded the full movie, nothing was
> > cropped, even the chapter that was tested. If it's helpful, the output
> from
> > cropdetect was (on the test chapter)
> >
> > [CROP] Crop area: X: 1..718  Y: 56..419  (-vf crop=704:352:8:62).0
> >
> > and those are the numbers I used.
> >
> > I'm not sure how to grab the resolution with mplayer. The output video is
> > 720:480, although I specified 640:480 in -vf.
>
> can you cut a small sample and upload it somewhere (eg, mediafire)?
>
> mencoder -ovc copy -oac copy -ss 00:4:00 -endpos 60 -o output.avi
>
>
Check it out here:

http://jcosby.com/media/chinatown1.avi

Strange that the copy is 4:3, or so it appears. I can't confirm this in
mplayer, though. It shows ID_VIDEO_ASPECT=0.0000


Jon