Steps to reproduce:
1. $ chromium-browser –temp-profile # just to rule out custom configuration
2. Go to youtube.com/html5, opt in to html5
3. Go to http://www.youtube.com/watch_popup?v=-JryxdydOj0&vq=480

What happens:
The tab goes Aw, Snap! and dmesg says ”chromium-browse[12042] trap invalid opcode ip:7f4e637e1c7d sp:7fff4a10d878 error:0 in chromium-browser”.

What I expect to happen:
I haven’t bothered to check how it should behave, but at least it shouldn’t crash.

Additional information:
Seems to happen with both chromium-codecs-ffmpeg and chromium-codecs-ffmpeg-extra (from Medibuntu) alike.

I’m attaching a backtrace. I did my best with it, but I’ll readily admit I have no idea of its value. Please do advise me if I more -dbg packages or something else is needed.