[MPlayer-users] Re: one frame forward/backward

[Dominik Szczerba]

yes, i have exactly the same problem as Dean too... and would be glad to 
change that... why 3 frames?

mencoder "$1" -mf on:fps=25:type=png -ovc rawrgb -o /tmp/$3.avi
mencoder /tmp/$3.avi -ovc lavc -lavcopts 
vcodec=mpeg4:vbitrate=$2:vhq:vqmin=2:vqmax=15:keyint=250:vmax_b_frames=0 
-o $3.mpeg

bye
Dominik

Dean S. Messing wrote:

>[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
>
>Alex Dunaevsky wrote:
> :: AFAIK you will be able to seek to next/previous keyframe. Keyframes 
> :: are set while encoding. So you can reencode the file with some codec 
> :: that allows setting keyframe interval (e.g. libavcodec) and be as 
> :: precise as you wish.
> :: 
> :: -- 
> :: Best regards,
> :: Alex Dunaevsky  <alexcrow at ua.fm>
>
>Are such keyframes set when encoding uncompressed
>video?  I use mplayer for my research.  I encode
>.avi files from sequences of .png source material.
>I would very much like to get mplayer to single
>step on frames but, so far, have failed to be able
>to do it.  Even when I set fps to 1, rapidly
>hitting the space bar twice moves me ahead 3 or
>more frames.
>
>Is there any way to get single step action via the
>encoding process?
>
>                        Dean S. Messing
>  
>

-- 
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Dominik Szczerba, Dr.
BIWI/CO-ME, ETZ F85
ETH, Gloriastr. 35
CH-8092 Zurich
http://www.vision.ee.ethz.ch/~domi
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ii swear i never use vi^[:wqZZ
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