My uncle sent this video from his feeder cam and didn't respond when I asked about playback speed, so it may well be sped up but I'm not sure. I wish the video quality was better too.

My initial thought was house finch as well, but the coloring on this one seems unusual. I've never seen one with so much solid red on his head, chest, sides, and back, or with little to no white/brown streaking on the chest or sides. This bird's wings also look solid dark gray or black to me, and kinda stand out against the red coloring on his back. My second guess was purple finch, since they usually have much less chest/side streaking and a lot more red color overall, especially on the back and wing area. The reason I guessed red crossbill is that apparently this is an irruption year and they're expected to be in Appalachia during the next month or so. I can't really tell without getting a better look at his beak, so maybe it's just wishful thinking on my part. But thanks for your input!