Jon Diorio, a well liked Google AdWords Product Manager, posted on Google+ a little feature add to the Google AdWords Report Editor. Specifically, Google added full video ad metrics to the Google AdWords Report Editor.

That includes metrics such as:

Views
View rate
YouTube Earned Views
Video played to 25%
Video played to 50%
Video played to 75%
Video played to 100%

Here is a screen shot:

Forum discussion at Google+.