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As far as I can see there's no need to re-encrypt the signal - just leave it as a non-HDCP stream? There are HDMI splitters which silently strip HDCP to output
by 4rt 3y ago
As far as I can see there's no need to re-encrypt the signal - just leave it as a non-HDCP stream?
There are HDMI splitters which silently strip HDCP to output to two screens at once - they don't advertise this feature but they do it anyway in order to function. In order to achieve the overlay you'd just need one of these and then a non-HDCP-aware overlay apparatus before the display.
https://www.reddit.com/r/VIDEOENGINEERING/comments/xme482/hdmi_1x2_splitter_to_bypass_hdcp/ https://www.reddit.com/r/VIDEOENGINEERING/comments/xme482/hd...
- charcircuit 3y agoYou won't be able to get keys for HDCP if your device isn't compliant
- mrandish 3y agoI believe these kind of cheap, no-name converter/adapter boxes use leaked HDCP keys.
- userbinator 3y agoThe master key was cracked long ago. You can generate as many of your own unique keys as you want.
- charcircuit 3y agoThis only works for old HDCP versions though