Hey! Where's the picture?
// @matigo 
In the lounge at Istanbul airport I saw a man use the perfect platform for @matigo to change to. Is it an Apple? Is it a Thinkpad? You be the judge.
@streakmachine The quick answer is yes, although it depends on the software that you are going to use to do the chromakey. If you just bung up a big old piece of green (or blue, or any other colour fabric, really) then as long as the software has a sensitivity setting you should be ok.
I've done it with iMovie -- can't remember how many versions ago -- and it worked out fine.
And … Wouldn't you know it, the edit resets the clock, so have to wait to see whether anything else needs an edit.
Now this is unexpected behaviour.
// @matigo