I'm currently using FCE4 to edit 720p H.264 footage from a Kodak Zi6. Currently, exporting even minute-long video at 1280x720 produces a file size of 200MB! I need to be able to upload this footage to YouTube (it's for a website I work for) and am looking to use a format that will give viewers the HD option on YouTube. Does anyone have any tips? Is there some sort of compression I could be using? Also, is there any format that FCE4 could export the videos as that kept the resolution but lowered the file size dramatically. Any help would be appreciated. Thanks.