That's what all Samsung televisions do, and there is no way to turn it off. They advertise on their own web page that they monitor the content viewed on their televisions for targeted advertising.
This isn't via some sort of metadata, they take screenshots at regular intervals and upload them to very insecure hosting.
I hope you never look at any "sensitive" content on your TV!
I don't really care because I only use the TV to access other streaming apps, and I know they already see everything I watch anyway. I don't have either cable TV or a cable-like alternative (YTTV, Roku Live, Sling, etc). Periodically I'll use it to cast something to, but it's usually my kid's soccer matches from a website on a laptop.
Fwiw, to the best of my awareness, I don't receive any advertising from my Samsung TV other than perhaps the strip of suggested things to watch (half of which are "continue watching" linked to watch history in the app I'm hovering over) that lives above the app list. This is wildly different from Google TV, which has a core value prop of embedding advertising right in your face.
It's called automatic content recognition (ACR). Most systems take low resolution (about 640x480 or 320x240) black and white screenshots at regular intervals, compress them do death, and upload that to big brother. That's more than enough to determine what specific kink or style of porn you're into, if you make the mistake of thinking that watching that kind of stuff in the privacy of your own home is private.
Are you happy with it spying on you?
That's what all Samsung televisions do, and there is no way to turn it off. They advertise on their own web page that they monitor the content viewed on their televisions for targeted advertising.
This isn't via some sort of metadata, they take screenshots at regular intervals and upload them to very insecure hosting.
I hope you never look at any "sensitive" content on your TV!