Developer credits
Git commits in Moodle 2.8.1 by sam marshall
commit b0ac83b82bb0e9a7b93b58819baf3209d6c85c9e Author: sam marshall <s.marshall@open.ac.uk> Date: Thu, 06 Nov 2014 19:54:09 +0800 Tag: v2.8.1 MDL-48093 HTML 5 video: Firefox now supports .mp4