I tried exporting a 1080p file from iMovie to the camera roll on my ipad 2, but it failed. However, the size of my camera roll went up by 2 gb after my attempt to export it... I think that I have the 1080p file on my device, but since the ipad 2 doesn't support 1080p playback, I can't view it and I don't know how to delete it... Do any of you have any suggestions?