I have a few movies that i got from dvd's (i own the dvd's) and encoded to the iPhone's screen with HandBrake. It works great, but will these have to be re-optomized for the iPhone 4's retina display? I want to know because I was going to do a couple more today, but I will wait if they won't work or will be crappy quality on the iPhone 4's screen. Thoughts?