What is the best way to make it possible to upload 5-10 min videos?

My for requires 2 of these videos (mp3, avi, mp4)

You can do that by using our upload field option, by setting the file extension and the file size (if you want to limit the upload possibilities).

You will be able to find it under Form Tools:

Depending on the type of files that people would upload to you, you could set the accepted maximum file size to be an average of 12 min videos, allowing you to add the limit, but still accept the right files.

Depending on what you would like to achieve, you could also make your jotform capture videos and send them to the YouTube directly: WebCam 2 YouTube.