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Mountain Lion, AirPlay, Screen Captures & DRM
- vitovito 14y agoThis isn't necessarily an indictment toward DRM. Hardware-accelerated video is (used to be?) done using hardware video overlays. You'd pipe frames directly to the video card and tell it what region of the screen to render it to, completely independent of the regular 2D or 3D rendering path. On 2D Windows desktops, you'll see this as a magenta square when you take a screenshot, because the 2D windowing system only knows about the elements plus the "hole" where the overlay goes; it has no way to access the pixels in the hardware overlay buffer. The author mentions sending the video through AirPlay by sending the entire desktop, rather than using iTunes to send the video directly. If QuickTime Player is rendering the video using a hardware overlay, this makes just as much sense that it would fail as does the screenshot case. I'd be curious to know if sending it via iTunes works fine.