How can i repeat continuously a video in a slide ?

Hello
I would like to repeat continuously a video imported on a slide (an avi for example) until the slide change. For instance the video is played once.
There is a repeat button in media property , but it doesnt change anything yet.

The question is not about how to repeat the full slideshow, only a video on a slide.
Tx

Answered on the French instance.

Please avoid duplicating entries.