Note Test on supported browsers for 3.9 and 3.11 Testing instructions Login as admin Go to Site admin > Plugins > Media players > Manage media players Enable "VideoJS player" if it's not enabled yet and click on the arrow to put it on the top so it becomes the default media player Restore the media_players_course_backup.mbz as a new course. Except for the Vimeo video, check the video and audio files rendered on the course homepage Confirm that playback controls are displayed Confirm that playback controls work as expected Playback controls get hidden after some time during playback and are shown when the mouse hovers over the player or the player receives focus. The designated functionalities of the controls work (e.g. play button plays and pauses the video, dragging the playback slider works, the chapter select menu or playback speed work as expected, switch to full screen works, etc.) Confirm that all the menu items are working as expected Regression tests Repeat the tests from the following issues and confirm that everything is still passing: 3.9 and 3.11 - MDL-75278 3.9 - MDL-67383 3.11 - MDL-70308