It is able to identify content directly from the pixels, they will know what you've watched even if it was from a pirated .mp4 served from your PC:
https://en.wikipedia.org/wiki/Automatic_content_recognition
It is able to identify content directly from the pixels, they will know what you've watched even if it was from a pirated .mp4 served from your PC:
https://en.wikipedia.org/wiki/Automatic_content_recognition