Original: http://users.softlab.ece.ntua.gr/~ttsiod/tricks.html#x11swf

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To generate an XVID AVI
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First, run the server:

    vncserver -geometry 640x480

Then connect to it, and produce the recording file:

    vncrec -record samples.vncrec

(e.g. when asked, connect to localhost:1)
Hit F8 to bring up the menu to Stop.
Then, check it with:

    vncrec -play samples.vncrec

and encode it (at 64kbps) with:

    transcode -i samples.vncrec -x vnc -z -y xvid \
    	-g 1024x768 -o mitsos.avi -w 64

View it with:

    mplayer -vo x11 -fs mitsos.avi 

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To create an SWF that works for the Web
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    vncserver -geometry 640x480
    vnc2swf video.swf localhost:1

F9 to start recording
F8 to bring up menu and quit

    cp ../track.mp3 .
    edit_vnc2swf.py -o final.swf -a track.mp3 video.swf