Most likely impossible. The digital camera can only record in one video format. Whatever format that is, you'll have to deal with it.
You can change it using a video converter through the computer. There are lots of video converters out there. Some are free, some are not. There is no guarantee that if you pay for it, it will work. I've used some free versions before that worked out fine for a limited number of minutes only. Good luck in your search.
Now you know!