Do you need to have a on screen timer on not, as the video length will just tell you it all. With no cuts you can tell it but you would have to record in-between the races for it to count right? or is it just on track or the whole thing loading and everything? thanks

no need for a timer

Yes, no timer is required on the video, but you have to capture every single loading screen and stuff between the start and the end of the run.