What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
The quicktime format movie is having an extension of .mov. Adding this extension to allowed file extensions of upload box should suffice. I've cloned and test your form. I was able to upload mov format file successfully. Also, you may consider adding .mp4 since it is one of the widely used formats.
Please get back to us if you need any further assistance. We are happy to assist you.