On Monday 28 April 2008 17:31:10 Mikko Rauhala wrote: > On ma, 2008-04-28 at 09:26 -0500, Tim Shannon wrote: > > But isn't it still limited by the bandwidth available from the micro > > SD card? Maybe I misunderstood that. > > Yes it is. It's just that sending mpeg4 packets to the glamo takes just > a _tiny_ bit less bandwidth than sending entire uncompressed frames.
Huh? I think (I hope) I've mis-understood you. Surely it depends what bitrate the mpeg4 video stream was encoded at? Personally I encode 640x480 @ 25 fps at about 800 KBit/s for video. Uncompressed 16bpp would be: 640x480x25x16 = 120000 KBit/s Surely 800 KBit/s is not just "a _tiny_ bit less" than 120000 KBit/s? Sending compressed MPEG4 video to the glamo is going to be a _lot_ better than sending uncompressed fames! I'm also wondering just _exactly_ what is meant by MPEG4. I'm guessing it means MPEG4 part 2 - but which profile? Probably simple profile given it's a mobile device - which probably means you'll have to transcode all your videos to MPEG4 part-2 simple profile, as most MPEG4 video I've come across is Advanced Simple plus some codec-specific extenstions (Div.X seems to especially like defining their own extensions). However, I believe this limitation affects IPods & PSPs, etc. too, so the neo is not alone. _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
