It is indeed a valid bug. I am running Ubuntu 12.04.2 armhf build and it will not play youtube videos, with the same specified error.
** Changed in: totem (Ubuntu) Status: Invalid => Confirmed -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to totem in Ubuntu. https://bugs.launchpad.net/bugs/1086651 Title: movie player does not play youtube videos To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/totem/+bug/1086651/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs