I am very new to video editing. My buddy and I are making a video but he needs me to convert my video (avchd) to another hd format. I have purchased videostudio x4 pro but all of the other video options are less than hd. My buddy said that .avi, .mov, and mp4 are all fine but I would go from 1920x1080 down to 800x600 for the frame size....this is less than ideal. Any ideas?