Thank you for your bug report, from the log on the screenshot it looks like you are missing gstreamer codecs to decode the video you are trying to play (and automatic codec installation isn't working so you would need to install those manually)
** Changed in: totem (Ubuntu) Importance: Undecided => Low -- 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/2042584 Title: Totem fails to play downloaded video To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/totem/+bug/2042584/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
