Use of applescript in Photo booth program

Now I have watched this video and I can see it is using a capture program and then some other program is doing a slideshow.
So let’s see if we can name the software.

Go to the site
click on the digital photobooth link at the bottom left.
watch the film at the 54 sec point they show the software for a second pause it as look.
What two pieces of software are they using.

If they’re doing it on a Mac, it’s probably Final Cut Pro.