Have you got it set to a 'sensitivity' setting? On some models you can turn on a feature which saves footage immediately if it it senses a knock of some severity. That could explain the random lengths?
If you are still in the market this mob looks interesting. Has some good info as well. Check out their Facebook site too, heaps of people upload their incidents daily. Interesting to watch.
http://www.dashcamownersaus.com.au
If you are still in the market this mob looks interesting. Has some good info as well. Check out their Facebook site too, heaps of people upload their incidents daily. Interesting to watch.
http://www.dashcamownersaus.com.au