This test is usually Pass but there are isolated cases of timeout and Failed on EFL WK2. http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#revision=162859&showExpectations=true&tests=media%2Fvideo-loop.html
Bug 81604 is related.
Closing this bug because the EFL port has been removed from trunk. If you feel this bug applies to a different upstream WebKit port and was closed in error, please either update the title and reopen the bug, or leave a comment to request this.