I can confirm that cherry-picking 68cef6cd281572fcfb76a341dc45b7c8e5baffe6 on top of Ubuntu's 2.99.904 fixes the described XVideo problem on my Haswell. Reporting this to a downstream bug report too.
I can confirm that cherry-picking 68cef6cd281572f cfb76a341dc45b7 c8e5baffe6 on top of Ubuntu's 2.99.904 fixes the described XVideo problem on my Haswell. Reporting this to a downstream bug report too.