Help , how to take a pic or record a film on desktop (prison break season 4)

[Zezima]

Hay i need help ok so here it is :

I try to take a screen(with "Print Screen SysRq" button)  of eny movie what i download and open with VLC media player it..Ok so i then i go to paint , push ctrl+v , and it only shows black..The hell ?




Then i try to record it with HyperCam2 , but when i record it save it , i try to open and watch , it too only shows me black and no view...

Maybe someone can tell me how can i take pics of a movie or record it without sound ? Everythin i tried , failed..lol