[MEncoder-users] Cropping fails on DVD

[Grozdan]

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

>
>
>>
>> > Does it usually take this long to transcode a  DVD,
>>
>> Considering that you haven't said how much time is a "long", or any
>> details about your hardware to give someone a clue as to how powerful it
>> is, nobody can possibly say.
>>
>> > and why would the cropping fail on the full run?
>>
>> It wouldn't.
>>
>> > It even failed on the test chapter the second time around.
>>
>> This clearly means you're doing something wrong.  Mencoder doesn't act
>> differently, no matter how many times you tell it to encode a video with
>> the same settings.  The only thing I can suspect at this point is a
>> typo on your part.
>>
>
>
>  That's not impossible, but it seems I went with the same numbers. Before
> doing this again, I want to be sure I know what went wrong. I have a lot of
> disks to back up.
>
>
> Jon
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