So, I just noticed this, but when I go into flight records it shows my flight as being a 20 min flight. When I look at my video -- it shows it being 25 min of flight.   When I take off I start recording, then down and out on the sticks and take off -- no more than 5 second delay.  Why is it the flight record only shows it to be a 20 min flight?

So, I just noticed this, but when I go into flight records it shows my flight as being a 20 min flight. When I look at my video -- it shows it being 25 min of flight.   When I take off I start recording, then down and out on the sticks and take off -- no more than 5 second delay.  Why is it the flight record only shows it to be a 20 min flight?