Here's how to use an iPad 2 to edit MP4 HD video from a GoPro Hero video camera. To do this, you will need the Apple iPad Camera Connector kit and iMovie. You also need to update your iPad operating system to iOS5. I tried doing this before I updated, and iMovie wouldn't allow me to edit the video. Now it works great. You can add voiceovers, titles and sound effects. It's pretty neat. If I were traveling and making videos, I'd bring the iPad instead of a laptop. You can also upload video directly to YouTube from the iPad.