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I also remember that I couldn't make any screenshots of videos at all. They were rendered in some kind of overlay, that the rest of the GUI didn't know anythin
by k__ 1y ago
I also remember that I couldn't make any screenshots of videos at all.
They were rendered in some kind of overlay, that the rest of the GUI didn't know anything about.
- jakub_g 1y agoAs far as I can tell, it's still the case if the video is DRM-ed. Then any screenshots of it will be black square, because the OS can't "see" the video, it's sent directly to the monitor, similar as in the article.
- grishka 1y agoNo, it's not that. Usually, the OS does see the video and the compositor still renders it to the screen like normal, but when you take a screenshot, the OS itself is an accomplice here by not rendering that surface in screenshots.
- JoshTriplett 1y agoUnfortunately, current implementations of DRM use things like https://en.wikipedia.org/wiki/Protected_Media_Path https://en.wikipedia.org/wiki/Protected_Media_Path
- deleted 1y ago[deleted]
- CrossVR 1y agoAny DRM protection where the OS sees the video is useless, because the OS is under full control of the user. (For now at least)
- grishka 1y agoNot true about Android at least — there is secure boot where the bootloader will snitch on you if you unlock it, and you can't do anything about it because the attestation happens in a trusted execution environment, a hypervisor with higher privileges than the OS kernel, that you never get to unlock.
- CrossVR 1y agoAndroid is unfortunately no longer an OS controlled by the user and that is very concerning.
- karel-3d 1y agothat's literally what the article is about