As I can see there are two cameras, one from each side of the road.
I can not see clearly from YT, but there might be some sort of "numberplate" at the rear of ...whatever he is towing ?
Learned 2 things from this....
The external lens works well.
when you cut a section from a 3 minute file there is enough deterioration to lose a number plate where it can be seen on the original 3 minute file...