hi, @vcelier,
This reminds me about an accident I had two years ago, I bought a dashcam from a friend, who told me that it was state of the art and would record continually and would overwrite once the storage ran out.
I was delivering pizza to a customer and was set up by some guys who thought it was funny to drive behind my car while I was backing out.
I hit them but only softly, only a small crease in the back wheel arch, I thought well at least my dashcam caught all that.
Been outnumbered by the guys in the car who set me up, I went along with everything knowing that I had all this footage on tape.
I got back home and phoned my insurance claims department and told them what had happened, they asked to see the dashcam, this was a rearview and front camera that I had in.
I opened up the files to find that the crash wasn't recorded and all you could see was me nodding my head like I was taking the blame.
Needless to say, my insurance company paid out for 3 whiplashes and damages to the car, my insurance went up by £1000 the following year.
my friend then explained to me that it was bought from china and had a dodgy recording system.
this really didn't help me in any way.