We're finding that Canvas doesn't accept .mkv video files as a media type for submission. Speedgrader refuses to play these files. Our Lenovo Chromeooks default record with the .mkv file format when recording video -- separately from using the online recorder in Canvas, -- meaning that students must use a converter to submit recorded video in Canvas. Additionally, many popular applications, including TikTok, use .mkv files, so adding this option will provide greater accessibility for students to submit their work in Canvas. 

We would like to see .mkv formatted videos accepted in Canvas.