Python Commands for videotexture (Template)

I found on

some nice templates to have video in my games. I need to know how to control them.
Specially i need to refresh the Texture that i can watch another movie afterwards.
The same is, i want to stop a video during playback.
Where can i find command for these scripts.
Has anybody experience with this videotextures and can help me, please.

Thx @all