I am recording a test video within Canvas, using my webcam and the Record Video procedure. It is very short, but won't playback without freezing the video halfway through. The audio can be heard, but the screen is frozen.
As a test, a student uploaded a video per instructions in Canvas, and I was never able to get it to play. It always gave me the message that the file was being converted. A ticket to support didn't offer any solution: just asked how the student did it, which I didn't know.