[sugar] video encoding

[Ed Stoner]

I would like to provide the functionality of a "video export" from 
within an activity I am working on.  I'm starting with a png for each 
frame of the video and would like to do something like:

mencoder mf://*.png -mf w=800:h=600:fps=25:type=png -ovc raw -oac copy 
-o output.avi

or

png2yuv -I p -f 25 -j /tmp/*.png >my.yuv
ffmpeg2theora --optimize my.yuv

Could someone enlighten me on how I could achieve this from the 
libraries available on the XO?

Thanks.