Search:

WAIT-
I got it now !
THANKS =)
You saved the day

That would change the size of the project.
But it doesn't change the size of the imported data, only cuts again.
I need to adjust the length, not the height.

The imported data stays 4:3.

I followed the instructuion by that dude, who does 2.35:1 projector lenses and dvx by filming through the optics.
Well, then you get a 4:3 squeezed image.
Play it with VLC-Player or on TV-monitor...