Youtube & Flash Videos broken?

Sat Apr 6 21:54:46 UTC 2013

On Sat, 2013-04-06 at 23:39 +0200, Jens Schweikhardt wrote:
> http://www.youtube.com/watch?v=Ywn2Lz5zmYg

Firefox 20.0 Arch Linux x86_64 can't play this video too. Neither flash,
nor gnash installed. Perhaps it's a video with a commercial, before the
video can be watched? Wicked!

> http://www.youtube.com/watch?v=oUPtiYiMCbQ

Video and audio are ok for this video, still without flash or gnash.