Guests are sending video file via my form but I am not receiving them...what's blocking me from receiving the files?

I checked your submissions and I was able to access the files without issue.  They are available from the submission view in your account:

http://www.jotform.com/help/269-How-to-view-Submissions

If you are still unable to access the files, let us know where you are trying to access them, as well as what specifically is preventing you from viewing them and we will be happy to have another look.