I tried converting an existing video to 3gp format - here's a shorter 3pg version of the People watching at Saket PVR video :
and also made a new one after taking a few 2 second video clips and some rough edits.
this is the original version :
and this is the .3gp version
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general notes
http://www.graffitiresearchlab.com/
grafitti research lab - led projections onto screens/walls - throw the led devices up and they project onto a wall. they stick to the wall via a magnet
http://www.instructables.com/id/E9D2ZJ3FG0EP286JEJ/
introLED Throwies
Developed by the Graffiti Research Lab a division of the Eyebeam R&D OpenLab, LED Throwies are an inexpensive way to add color to any ferromagnetic surface in your neighborhood. A Throwie consists of a lithium battery, a 10mm diffused LED and a rare-earth magnet taped together. Throw it up high and in quantity to impress your friends and city officials.