No i am not the owner and he is not the owner its a video i found online many years ago some walking around and laying in the bed smiling i tought the dog looked cute he said its a rottweiler mix so i should probaply believe himIt's incredibly difficult to tell anything with the quality of the photos, unfortunately. Those breed recognition websites are notoriously unreliable for mixed breed dogs anyway, even with clear pictures.
Are you the owner, or was the person who said he's mixed the owner? If the owner says he's mixed, then I'd be more inclined to believe it. If you're worried because someone told you your dog was mixed when you thought he was purebred, well... people make a lot of weird assumptions about dogs they see. According to one lady, my two male dogs of different breeds are mother and daughter.