Thanks for the report, and sorry for the late reply. Is this still happening with the latest firefox update?
If IĀ understand correctly, this is not a problem of missing codecs, as the videos would play if enough buffering was done, right? ** Changed in: firefox (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898656 Title: Firefox not playing YouTube videos in Virtualbox on Xubuntu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1898656/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs