You could try this:-

1. Drag’n’drop video clip to page
2. Preview page (F5)
3. Take screenshot (PrtScrn on your keyboard)
4. Open new document (Ctrl+O)
5. Paste bitmap.
6. Crop to video image.
7. Copy to clipboard (Ctrl+C)
8. Go back to document with your video clip & paste image (Ctrl+V)
9. Position exactly ontop of video clip
10. Send to back (Ctrl+B).

From: http://xara-users.info/demos/show-im...ideo-playback/