Hi there, @BrandyKerr ...
It sounds like your file does meet one of the supported file types for Studio...as indicated here:
What file formats does Canvas Studio support? - Instructure Community (canvaslms.com)
You might just want to double-check, though, to make sure that your video file is a type that is listed on that Guide. Have you tried converting the video to some other file type to see if that work instead...such as a *.mp4 video file?
If you are still not able to get it uploaded, you might want to have a conversation with Canvas Support.
How do I contact Canvas Support?
Please keep us posted on your progress...thanks!