@william_cooper , this question comes up often (see Media Uploads Not Loading , Media has been queued for conversion? , Problem using media upload , and Difficulties Uploading MP4 Videos , for example). Just last night I worked with a student who recorded a short video on her iPhone on Saturday night, uploaded it through the media upload tool, and still had the "Media is currently being converted" message on her screen Sunday evening. I advised her to open a ticket with Canvas Support, re-upload the video to YouTube and use the video embed code to complete her assignment, and notify her instructor.
So far the only way I've seen to remedy these issues is to have the affected students submit their own help tickets so that Canvas Support can investigate the hanging uploads. Ideally they should open the ticket directly from the page on which they're attempting the media upload so that metadata that can assist in the investigation will be captured and sent to Support along with the help request.
