Apologies but I need a little help. After following some advice regarding exporting for YouTube (mainly quicktime compression using H.264) I have two issues. One how do I make sure the sound is as good as possible and two, my test export looked ok but started to become jerky pretty quickly in QT. I should add the project was filmed in HD on my Canon 550d. Basically I just want the best looking video I can have.
Also are you playing this on your computer, then what is your computer.? Or are you playing it over YouTube? Do you see a difference when you play the freshly encoded video on your computer than YouTube?