To Reproduce:

1. Build and run the attached app on iOS.
2. Click on any of the play video buttons.
3. Click the 'Menu' button.
4. Observe that the video is closed but the app remains paused (input is not read, and time (top right) is not changing).

This is only reproducible on 5.4 and above. Because on 5.3 the menu buttons does not close the video player or interrupt playback.

See http://fogbugz.unity3d.com/default.asp?770272 for the same issue on 5.3.