http://bugs.winehq.org/show_bug.cgi?id=58685
--- Comment #2 from Stian Low wineryyyyy@gmail.com --- (In reply to Todd Chester from comment #0)
Request for Enhancement: Please allow the buzilla to accept mkv files (movies). Sometimes that is the only way to properly communicate an issue that is happening. Showing with an mkv file removes all misunderstandings.
(In reply to Stian Low from comment #1)
Re-uploading ee_min.mkv which was downloaded from this fairly recent bug as a test: https://bugs.winehq.org/show_bug.cgi?id=58308
Based on this successful upload of mkv downloaded from previous upload, Bugzilla is already enhanced by allowing mkv.
Perhaps your mkv exceeds size limits indicated under upload button: (File size limit: 10000 KB)
Requiring files under 10MB seems reasonable.
Perhaps your videos can be optimized to meet Bugzilla upload constraints?