You can take screen shots of videos running in Windows Media Player, follow the simple steps below
Open up windows media player.
Go to tools-options.
Click on performance in options.
Click advanced button at the bottom.
Un-check the “Use Overlays” box under video acceleration.
Close out options.
Open a video you want to take a snapshot of.
Pause the video where you want to take the snapshot.
Press the prtscn/sysrq/insert key.
Close out windows media player.
Open Microsoft paint.
Press keys ctrl+V in ms paint.
Save the photo under the name you want by pressing ctrl & S.
Save the photo under the name you want by pressing ctrl & S.
It will not work on macs.