Hacker News new | ask | show | jobs
by vsskanth 1537 days ago
Wow. I'm curious to know how Inscape (the scanning tech mentioned here) is able to circumvent HDCP in this case. Do they have special access ?
2 comments

Smart TV SoCs usually have a capture engine that taps into the video stream being sent to the screen after HDCP decryption and allows it to be DMA'd directly to main RAM [1], and from there analyzed and sent to the manufacturer's ad partner of choice. As long as the firmware does not allow the end user to access these decrypted frames in any way, the TV will still pass HDCP certification with no issues.

[1] https://blog.ammaraskar.com/roku-tv-philips-hues

The TV is the one displaying, it obviously needs to decrypt the content.