Folks at BestBoyZ have uploaded an interesting video showing a comparison between the video quality of iPhone 4 and the newly launched Nokia N8.
At the beginning of the video you cannot notice much difference but at the end, the footage from both the phones are played side by side where you can clearly differentiate between the two
Source:
http://www.techxilla.com/2010/09/30/iphone-4-vs-nokia-n8-video-quality-comparison/
