I needed to make screencaps from a video.
So I attempted to do this by pausing the vid at the right moment, hitting "print screen" and then pasting them into Photoshop.
Unfortunately it didn't work. Photoshop refused to do what it was told. It kept saving a blank screen.
I tried free screen capture software Screenhunter but it did exactly the same thing once the image was transferred into photoshop.
I searched on a few boards and Alphawolf recommended on one that turning off graphics acceleration would help. Either that or using Windows Movie Maker.
Before I tried it we found another solution: The Gimp
The Gimp is open source photoshop-type software that will allow you to do a print screen and then edit the resulting image. You just pause the video, hit print screen, go into the Gimp and go File - Acquire. Then you save it as a jpg and crop the pic down.
Not perfect, but I was ready to tear my hair out this afternoon with this issue.
So I thought I'd share the info in case anyone is interested.
If you have any better ways of doing screencaps (which don't involve buying software) I'll be keen to hear them.