My maternal grandmother did this a lot over her last few years with dementia. I know because I had to care for her after middle school let out. It's time to put him in a home.

Bobby Silverman

He's losing words. Anyone with a parent or loved one suffering from dementia will recognize this pattern. Wen he says "moving cameras," it's because he can't recall the word "videos" and so he's stating the component parts as best he can. E.g., a "camera" is involved and the images are "moving"