How can I capture screenshots from movie (.avi, .mpg) films?

p0ntif

Platinum Member
Feb 18, 2001
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I'm running windows XP and for some reason, i can't use the 'printscreen' key to capture a screenshot of .mpg or .avi movies . . . All i get is a black screen. I used to have a program (a video editing program I think) that allowed me to go frame by frame through the movies and grab screenshots. I don;t remember the program, but something relatively easy to sue or something like that just to take shots of movies would be great! Any suggestions? Freeware/shareware is best!
Thanks!