Welcome to the forum bmandep.
It for sure do not look to be a very good dashcam, in 11 hours since upload you expect youtube to have finished processing it.
Hard to tell if anything can be made of this, even if you have a 1080p resolution video file.
If you use tint you for sure want to compensate a little for that messing with the EV value for the rear camera, that will negate some of the problems with the tint eating a lot of light.
But TBH i dont think there is much to be done here.
you for sure want to save original footage ASAP.
Searching for these cameras ( cuz i have never heard of them before ) the rear cameras do seem to be 1080p resolution, i supposed you have downloaded a streaming video to your phone, which are often smaller resolution to facilitate fast transfer.
No mention what sensors are in use here, making me think it might be old stuff.
I will say in spite of tint and all, a system on the new starvis 2 sensors, with the light after all there but the slow speed of the offender in mind, i think it would have made the capture.
HIt and run in intersection ( well tried to run on foot ) last night.
Early 20ties Romanian kid apparently working here in Denmark, killed 28 YO girl, BAC 1.78 thats like 1.5 over limit