You can record a video with software like FRAPS (payware) or other.
I do not think that it's really necessary to record the video, I really don't think they'll ask you for it :)
I did the video - lot's of mess and it was for nothing! :) But the flight comment may be helpful.
Pranas Drulis
WWA2097
Cat 4
FS9 + Level D 767
Assistant Hub Manager Amsterdam