Aw, poor Nugget! He looks lost, poor dear.
Maybe a mild seizure?
Did you have the video when you saw the vet a month ago? My best advice is to bring the video to your vet and have them view it. Given that it's happened twice now and the duration was longer the second time, probably sooner than later on that vet opinion.
Nugget is a beautiful boy, btw
I hope you can get a quick diagnosis and successful treatment for this latest symptom