I opened a new bugzilla bug #10632 to track updating the approved test case 'video_008.htm'.
http://test.w3.org/html/tests/approved/video/video_008.htm
http://www.w3.org/Bugs/Public/show_bug.cgi?id=10632
I believe it is incorrect and have updated this test with a correction.
See http://test.w3.org/html/tests/submission/Microsoft/video/video_008.htm
Additionally I have updated video_006.htm as well so that it can be approved.
http://test.w3.org/html/tests/submission/Microsoft/video/video_006.htm
At our next conference call (9/21/2010) we can discuss if indeed these tests are now correct per the HTML5 spec.
-Kris