I believe this was KDKA news team. The footage was out of focus but I recall seeing the black and white facial markings. You could also see the long thick tail floating and twitching as it casually walked along the edge of the field then went in the woods.
I recall they showed the film to some experts ( don't recall what made them experts) but they agreed that the footage showed a ML.
The lady made claims to seeing them around her house all the time.
Cougardeville,
Maybe you can look into this. I belive this was early 80's news segment for KDKA news out of Pittsburg. The reporter was Wayne Van Dyne. He was one of those invetigative reporters that usually did stories on fraud and ripoffs. If there was someone or some business that was ripping people off he'd interveiw the person and try to get the problem solved.
I'm sure that fottage is somewhere. I believe that even NorthPA would agree that it was a cougar after viewing it. Then he'd probably want proof that it was filmed in PA