[MPlayer-users] bug taking screenshots with WMV/ASF Files

[Dominik 'Rathann' Mierzejewski]

On Tuesday, 16 October 2007 at 20:38, base64 wrote:
> I am taking screenshots at various intervals from large wmv movie files, and
> have problems with the seek time being inaccurate.
> 
> I am using the following command:
> 
> mplayer.exe -nosound -vf scale=96:72 -vo png:z=9 -frames 2 -ss 00:30:00
> movie.wmv
> 
> I would expect this to give me a screenshot at exactly 30minutes, but the
> screenshot is instead taken at about ~00:30:20.   I have tried various
> options such as '-noframedrop' but this does not seem to help.
> 
> This does not occur when taking screenshots from other formats such as xvid.

MPlayer can only seek to keyframes. If the time you specify is not near a
keyframe, you'll get the next closest one. That it appears to have worked
in other cases is pure coincidence.

Regards,
R.

-- 
MPlayer developer and RPMs maintainer: http://mplayerhq.hu http://rpm.livna.org
There should be a science of discontent. People need hard times and
oppression to develop psychic muscles.
	-- from "Collected Sayings of Muad'Dib" by the Princess Irulan