Take for example a DRM protected video. That video is being send to the framebuffer of my video card. If I use an open source OS and open source Browser, what on earth is stopping me from capturing that video output?
Nothing, which is why this whole proposal even exists.
With this standardized, we will continue to be legally and/or practically blocked from native consumption of protected content on general purpose GNU/Linux distributions.
Open source OSes will probably not have CDMs available, except when prepackaged into a proprietary widget (Android, ChromeOS, B2G is Mozilla decides to play ball)
If an open source system can run the CDM and is packaged in a proprietary widget; then I am allowed to take that open source system out of the widget, modify it to behave exactly as if it is still in the widget (so that it can still run the CDM) and redistribute the system to everyone.
You might even not be able to use it elsewhere. For example, the current ChromeOS CDM apparently only runs on approved hardware that's locked down from the hardware up to prevent you running any unauthorized code - if you enable developer mode it disables playback, possibly even at the hardware level.
It's very hazy. If the userland (running atop of the Linux kernel) is closed source then there's few things you can do. Also, you can't just rip out binaries and redistribute them at will, EULAs usually forbid it.
