I shot a 1.5 hr video of a great lecture on my iPad. I may not post it publicly but I want to share it with a couple of people. I cannot find a way to zip it or convert it to a lower resolution so it could be put in Dropbox or HighTail. Remember, this is an iPad mini, and for now, I do not have access to my computer. Do I have to work at a computer to do this?