Your dumb TV doesn't have the appropriate HDCP chips, which is why it errored. Your computer didn't know whether it was a dumb TV or if it was an HDMI capture c

Your dumb TV doesn't have the appropriate HDCP chips, which is why it errored. Your computer didn't know whether it was a dumb TV or if it was an HDMI capture card ready to rip the movie... Not that I agree with the practice.