The iPhone 3G S makes taking video and uploading it to Youtube super easy as the 400% increase of mobile video uploads on Youtube after the iPhone 3G S launch proves. The iPhone 3G S only offers very simple video editing on the device itself. You can only trim the beginning and end of the video.
To improve the quality and entertainment value of your iPhone 3G S videos, a bit of editing like adding titles or transitions would be nice.
The only way to accomplish this is to email the video from the iPhone 3G S to a Mac or PC and edit it there.
TUAW has a little guide showing you how to edit an iPhone 3G S video with iMovie on a Mac.
Lets hope iPhone OS 4.0 will add some more video editing capabilities to the iPhone.
More iPhone 3G S News.