With the 3GS, you'll only be editing VGA movies, not 720p. I don't buy the RAM excuse.As a developer I can confirm I don't think is marketing, but it's probably a RAM issue. Handling video requires a lot of RAM and the 3GS has half the RAM of the iPhone 4.
With the 3GS, you'll only be editing VGA movies, not 720p. I don't buy the RAM excuse.