dax @ Tremulous from Dario 'Dax' Vilardi on Vimeo.
trem split videos while recording, so after a first past
$ffmpeg -i video.avi -ar 44100 -b 2048 -f mpeg -s 800x600 video2.mpg
i have appended the second part with first
$ cat video1.mpg video2.mpg > outout.mpg
and finally the last past with
$transcode -G 0.5 -i output.mpg -o final.mpg -y ffmpeg -F mpeg4 -w 2048
not to bad, quite simple 
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