That would be, using "Snapz Pro with Movies".
And then the movie was 'trimmed' using Quicktime 'Pro'. And resaved to make it nice and small.
The 'training video's' you have been watching would have been made with Snapz or possibly because they are quite old using 'Camerman', which does the same thing.
It is very good for making 'watch and learn, training video's'. You can download a demo off the main Ambrosia site.
Here. Not sure if Camerman is still around.
Regards
Ric