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Years ago, I remember trying to screenshot video on a Microsoft XP box. When I tried to paste the screenshot inside any image editing program, the video region
by jsdir 12y ago
Years ago, I remember trying to screenshot video on a Microsoft XP box. When I tried to paste the screenshot inside any image editing program, the video region would remain blank. If I correctly positioned the image editor window over the window with the video source, the video would show through this region, but the video remained positionally fixed to the screen. I cannot remember if this happened for all video sources though. Could this have been caused by DRM?
- deleted 12y ago[deleted]
- akx 12y agoNo -- that was using video overlays for hardware acceleration. http://en.wikipedia.org/wiki/Video_overlay http://en.wikipedia.org/wiki/Video_overlay
- geon 12y agoIt was because of how HW accelerated video decoding worked. You would specify the coordinates of a rectangle on the screen where to play the video. Then you'd display a rectangle of a certain color (#010000, I believe), to be used as a mask. The window manager could show windows on top of the video, and the masking would work even though the video decoding HW knew nothing about window management and vice versa.