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Any way to defeat HDCP for Chromecast recording? (startrek.website)
submitted 11 months ago by to c/piracy@lemmy.dbzer0.com
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I have my Linux box running my TV and it works great, but I'd like the ability to treat my Chromecast as a desktop window for streaming without switching inputs, multitasking etc. I have an HDMI capture card that works great with a Switch, but the Chromecast detects it's not HDCP (DRM) compliant so it won't work. Is there a way to outsmart that detection with software or hardware?

I've heard some knock off hardware confuses it enough to work but it seems like the info is old and I'd rather not roll the dice on hardware that's otherwise garbage...

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[–] 19 points 11 months ago (4 children)

When I bought an HDMI capture card years ago, it came with a little card that said "Do not use HDMI splitters to bypass copy protection"

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  • [–] 16 points 11 months ago* (3 children)

    The whole DRM thing just feels stupid, because it's mostly used to prevent people from sharing movies online, but people who share movies online are generally not tech illiterate, so the only peope who end up being affected by it are normal every day people like OP.

    Pretty much same for gaming. DRM tends to mess with your game, framerate even. People who pirate don't have that problem.

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  • [–] 3 points 11 months ago (2 children)

    DRM tends to mess with your game, framerate even. People who pirate don't have that problem.

    Not necessarily. Often times DRM doesn't get removed or completely bypassed, instead they only make the license check pass. In this case performance should be identical to the licensed original.

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  • [–] 1 point 11 months ago (1 child)

    So a license check which cost several cpu cycles, and maybe even a call to a server is replaced with a noop. And you say identical performance?

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  • [–] 1 point 11 months ago*

    Yes. Some cracks don't replace the call to a server entirely, and instead use a local server to return the expected response. In this case, the DRM would run normally, except for it not contacting the offcial remote server.

    Obviously if a crack removes a DRM completely, there might be a performance advantage. It depends on several factors.

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    • [–] 12 points 11 months ago

    Hdcp bypass splitters seem easy to find, have you tried one? There are also hdcp converters so if you have a splitter that only bypasses 1.4, you can try hooking it up to a 2.whatever to 1.4 converter.

    I also can't remember how they work exactly but you might need an hdcp compliant display connected to the main output of the splitter so the CC can establish an hdcp handshake. Idk if that's only a thing with some of them. Good luck!

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    [–] 5 points 11 months ago

    You kinda have to play the lottery with the HDMI cards; some of the can strip it, some of them can't. And it looks like some of them strip it and get detected.

    They can't advertise that as a feature either, so it's a bit of a crapshoot. It may be worth finding the latest reddit post about it to see if anyone has a specific model that was working in the past year.

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    [–] 2 points 11 months ago

    Try a generic HDMI splitter, or a multi input selector like a living room stereo.

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