In all honesty about the video the officer has no reason to falsify your ticket.
Nicer ones might reduce it a little bit. Lets say your 31 over he might put it to 29 over and save you a demerit point and a bit of money.
But the officer is not going to lie what speed you were going.
The officer does not get any more or less money or get any less or more time on the shift because of this ticket. It in no way effects him. It isnt really something i would worry about.
If the officer was caught lying and had the ticket more then what was actually clocked i am sure that would look bad and he would get alot of heat on him.
Alot of officers will also give you 5-10 km/h over the speed limit for this anyways.
On the 400 series in the GTA you usually wont get a ticket unless your going over 130.
120 almost never. 130 if he has time. If you start pushing it over 160 and 170 your guaranteed to get pulled over. Even at just over 150 he might give you a 49 over. But once you pass 160 they will most likely tow your car.