I uploaded a 2 minute, 20 MB video using the video uploading tool in the rich editor. I uploaded it to an assignment to show the students what they were supposed to do. This was a video I'd made on my iPad; a screenshot video. When uploaded, it plays nicely, except that there is no sound. However, if I simply open the video from the file folder it was in, rather than through Canvas, it does have sound (I have a mac, and it plays using the Quicktime application). I've tried changing to different extensions on the video file, such as .mov and .mp4, and they both upload and then play in Canvas but neither has sound.