Sorry🥰🥰🥰Snap! Beaten to it by seconds by @Darius_Jedburgh
a good quality safety camera.
It might give you some redress.
There is also an equivalent danger, judging from much or the footage I've seen on the Web over the years, that it'll also crucify the rider for contributing towards the incident.
But as you rightly say, that's not the brief.
All I would say is dont mount it on your helmet