Here is the video I recorded (on my phone and scaled down its not so clear but it works)
You can see that no matter which video I try to place on this PC it throws the same error.
http://youtu.be/j9wUXaAhSG0
I didn't watch your entire movie, but I played that exact
Woman in Minivan video that you did in the example this morning as a test and it worked. I just retested it now (it is still there) and it still worked. So, I can confirm now that you are not just picking over-and-over the (on my system, relatively few) videos where it doesn't work.
Where are you? I wonder if it is a regional thing.
PS. To others when stuff like this happens, please post
links to specific examples whenever reporting an issue with YouTube or Podcasts or Live Streams or whatever. Specific links. It makes it very hard to test otherwise, and leaves you wondering about lots of possibilities.