I have two MacBook Pro computers. On one, an M1 Max, the HomeKit video palyback will not work on my account. It will work a guest account on the same computer. On the second, an i7 13", no issues at all. I can also view the playback on my iPhone 14 and my iPad Pro. This started when I first began to use the HomeKit Video, well over a year ago and on previous OS versions. There is a HomePod and several AppleTvs around the house, so there is no issue of there not being a HomeKit hub.to function with, and I mentioned, it's only on the M1 that there is an issue. It shows the recordings, but when I click on one to view, it just zooms in on the scene. To confuse things, it will work on occasion, especially if I am calling Apple about it. (yes, it's fickle) Everything is up to date, both machines are running the latest Sonoma and the 13" has never had a problem with the video. It's going to be something so simple that I will do a "DUH" but what's the answer?