OK, here's how it goes. Step by step.

1. I play the movie in QuickTime Player

2. I stop the picture and use PrintScreen button

3. I open the picture in Word and enlarge it a bit (for
some reason the picture goes smaller)

4. I copy the picture to Paint -program and save it there. The
picture is still bmp.format.

5. Then I open the picture in Canon CanoCraft CSP 3.7 image program
and then cut the picture from it's backround. Now I save it again
and it transformes to jpg.format. I have to use Paint -program
so that I can open the picture in CanoCraft.

Perhaps not the best method but it is how I do it. No magic about it