Noob, no video, Windows 10.

I have a host of problems. Can’t get this to work at all. It won’t even play local videos. Audio’s ok on that but screen is blank but kind of pulsing. Here’s the log link http://paste.ubuntu.com/23219221/ what’s those timezone warning about, incidentally? I’ve told it I’m in the UK and it seemed to accept that… anyway, advice gratefully received 🙂