[MPlayer-users] -vo png ?

[Pupeno]

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What I need to achive (in case there's a better way) is to get a screenshot of 
a video at a given frame... curently I'm doing this:
mplayer -frames 50 -vo png -z 1 -ss 32 video.mpg
I'm getting 50 frames because the first ones are scrambled (because of 
compretion) and because since I can't tell mplayer to start playing at a 
given frame, but at a given second, I'll have to do some calculations using 
the fps and the time and compensate latter.
The problem with that (aside that I prefer to just tell mplayer to output the 
given frame instead of doing time/frame calculations) is that for some 
videos, it out puts 50 pngs, but for some others, it outputs 18, or 19, ro 
20. Do you know why does it do this ?
Thank you.
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