You can force the preferred video position by adding the following string to the URL:
&layout=..
There are 4 options
1 Video left
2 Video right
3 Floating video
4 Floating slide
Example:
http://nhtv.presentations2go.eu/P2GTV/viewer.html?path=0907-268/2009/12/11/1/video_post.wmv&layout=2