non-constant frame size

I was attempting to transcode a vob file ripped from a DVD. Partway 
through, the video would go screwy and stay that way for the rest of the 
file. I did some investigating and discovered that using the mplayer 
import module would bail out as though nothing was wrong at the exact 
point the default import module started messing up the video. Further 
experimentation showed that VLC failed to play the video correctly at 
that time offset as well.

It turned out that the video started out with a 720x480 frame size but 
later switched to 704x480. Then, some time later, it switched back to 
720x480.

I ended up having to use mencoder directly to manage to transcode this 
particular video. The mplayer module could not handle the change in 
frame size without bailing out. (mplayer crashed at that point, 
complaining about not being able to initialize the output. It could play 
the video just fine, however.)

Has anyone managed to come up with a magic incantation that will allow 
transcode to import video where the frame size changes partway through?

I had the same problem with 1.0.7 and 1.1.3. mplayer version 1.0rc2-4.3.3.

I also tried using "-c startframe-endframe" to grab portions of the file 
but this option appeared to be ignored by transcode regardless of the 
input module selected.

-- 
William Astle
[email protected]