For the video played by Media Player, most people will immediately think of using the print screen button on the keyboard to take screenshots. In fact, under Windows 98/XP, some mainstream video formats, such as. Avi,. Wmv,. Mpeg,. in the process of playing Rmvb, only the player can be caught, but the image being played can't be caught. However, a small number of "experts" know that capturing video screenshots requires the support of playing software, or using special picture capture software instead of directly using the print screen button. Why is this? Here we use an operation example to puncture the "enough" of video screenshots. Start a playback software, such as Windows Midia Player, and play a video file casually; Then start another playback software, such as Storm Video, to play the video file you want to grab. When there is a picture to be intercepted, press the PrintScreen button to take a screenshot of the video, and automatically save the video image in the clipboard of the system; Then casually start a graphic editing software, such as "Drawing" in Windows, and use the "Paste" command in the software to see the just-grabbed picture; Finally, use the Drawing tool to cut the picture. In this way, the video screenshot will be successful. What is the reason? It turns out that during video playback, the system often calls DirectDraw to speed up video playback. Because of the particularity of DirectDraw, you can't take a screenshot by pressing the print screen button. We can't open two DirectDraw Windows at the same time under Windows. As we can see from the above, Windows MidiaPlayer started first uses DirectDraw, so it can't capture images. However, Storm Video will not start DirectDraw again because the former started DirectDraw, so we can successfully intercept the video image.