kako oz. s kakšnim postopkom poteka kodiranje v video format

http://edition.cnn.com/2012/04/30/world...

ne razumem (glej spodaj)... ali je šlo tu za kriptiranje podatkov v datoteko "sexy tanja" ali so bili podatki kriptirani v sam video fajl "kick ass"
kako torej kriptirati(s kakšnim postopkom? kje prebrati kaj več) podatke v sam video format?

(CNN) -- On May 16 last year, a 22-year-old Austrian named Maqsood Lodin was being questioned by police in Berlin. He had recently returned from Pakistan via Budapest, Hungary, and then traveled overland to Germany. His interrogators were surprised to find that hidden in his underpants were a digital storage device and memory cards.
Buried inside them was a pornographic video called "Kick Ass" -- and a file marked "Sexy Tanja."
Several weeks later, after laborious efforts to crack a password and software to make the file almost invisible, German investigators discovered encoded inside the actual video a treasure trove of intelligence -- more than 100 al Qaeda documents that included an inside track on some of the terror group's most audacious plots and a road map for future operations.

amigo ful hvala! no pa smo se spet naučili nekaj novega :-)