[MEncoder-users] lavc doesn't work for me

[Phil Ehrens]

Frederik Eaton wrote:
> Also, it would be nice if there were some sort of warning on the web
> page and in the documentation about the general instability of
> mencoder. The documentation isn't very clear (a wiki would probably
> help it improve at a faster pace), and the examples have worked about
> 20% of the time for me. I think it would be considerate to say "stay
> away, newbies" on the web page so people don't get trapped reading the
> manual over and over and wondering what they did wrong when they
> encounter one of the many bugs.

Woah, take it easy... I have no problems with it at all, and I am
not an expert. There are things that are broken, but there are
enough things that work to satisfy the requirements of most real
world situations.

> On Sat, Jan 08, 2005 at 01:54:22PM -0800, Frederik Eaton wrote:
> > (originally sent to mplayer-users by mistake)
> > 
> > I've tried using libavcodec under mencoder with various options, and
> > it just doesn't seem to work at all. Am I doing something wrong? Here
> > is the command line:
> > 
> > mencoder -frames 5000 -dvd-device /home/shared/frederik/movies/Heathers/ dvd://1 -o heathers.avi -ovc lavc -lavcopts vcodec=mpeg4 -oac copy -vf ivtc -ofps 23.976
> > 
> > I just get a grey box when I try to play the output. Excluding the -vf
> > ivtc and -ofps 23.976 arguments doesn't help - I had them because they
> > were needed for xvid (but that had audio sync problems). Reducing the
> > number of frames sometimes gives me garbage instead of a grey box. If
> > I seek into the middle of the movie when encoding, then I can get a
> > playable video sequence, but not if I encode from the beginning. Below
> > is the output of mplayer when I try to play heathers.avi.

please try without the -vf ivtc, and without the -frames 5000.
Let the encode run until you have about 5 minutes encoded, and
then hit Ctrl-C and view the resulting .avi with mplayer. Then
report back.

-- 
Phil Ehrens <phil at slug.org>      | Fun stuff:
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