When doing a Google video, you need to have that dash before the long number when you put it between the Google code.
For example:
video.google.com/videoplay?docid=
-8831714570868814239&q=Cro+cop&hl=en
Notice that dash?
Not all Google videos have that dash, but the ones that do will not work without it when you want to code it into a post.
Below are two examples. The first is without the dash.
And, this one is with the dash, and using the same number.