What is the status of video streaming? I believe the Dronecell is not 3G, so a 3G cellular board (like those available from Sparkfun) must be used?
I was looking into the cellular video streaming problem a year or so ago, and I concluded that to get decent quality, H.264/MPEG4 compression should be used. The problem I ran into is that the encoder chips seem to be tightly controlled by the suppliers--none of them even seemed to release a datasheet without signing an NDA, and requiring the potential for high volume purchasing.
Does this problem still need a solution, or has somebody already achieved efficient, low power, low weight, compact H.264 encoding for 3G?