Well I have a MacBook Pro that does a lot of that stuff, GarageBand, iMovie and so on. I have been documenting my sailing adventures on DVD's for quite a few years now, but compressing longer video files for smaller up loads to YouTube challenges me. Do you remember how many MB's your video was when you uploaded it?
I do have a little Olympus Stylus Tough that is good for about 16' under water. Might just try mounting it on a kite some time. I think I will first experiment with attaching it to a pole and try holding it in front of the bow and dipping it in the water. Is that what you did to get some of those non aerial shots Rick?