[MPlayer-users] Why is it "Skipping frame!"s?

[Matthias Czapla]

On Fri, Feb 06, 2004 at 07:31:42PM -0800, Corey Hickey wrote:
> Matthias Czapla wrote:
> > I wouldn't say "problem" because the resulting file plays just fine (at
> > least for me) :)
> > But it keeps skipping frames when I do the following without any frameno.avi
> > lying around:
> > 
> > for i in 1 2; do
> >         nice -19 mencoder -aid 128 -oac pcm -ovc lavc \
> > 	-lavcopts vcodec=mpeg4:mbd=2:trell:vbitrate=509:vpass=$i \
> > 	-sws 2 -vf crop=672:316:24:130,scale=544:240 \
> > 	-dvd-device some_image.bin dvd://1
> > done
> 
> Are you sure it's just fine, though? In NTSC land, at least, whem
> mencoder is skipping frames the encoded video "jumps" a little bit
> whenever the frame is skipped. You have to look closely at some scene
> with constant motion (like panning) to see it.

Damn, youre right. When looking closely I noticed the jumps.

> Do you have access to post a small portion of your DVD image on some
> http or ftp server so I can download it and experiment?

After the problem with A/V desync discussed in another thread was solved, I
deleted the image. But it happens quite often so I can make a portion
available the next time. Is dd'ing a 10 MB piece from the start ok?

Regards
Matthias