Well, since such a discussion has begun ...))) About sound when the speed limit is reached.
You all idealize the situation very much.
You are discussing almost AI or Tesla-mobil. ))
And you demand the impossible from the device of our time at an affordable price.
The developer refused to do speedcam (as I understood). Although I see no problem in converting different formats into one and copying it to an SD card.
Let him make at least a cheep according to the limit set in the settings...
Everything is much simpler:
1) Do not like it!? - Turn it off!!!
This function just pulls back you away, and does not take care of all the work for you! Man must drive a car! The device's beep is just a reminder.
2) Speed in cities, as a rule, is limited by one threshold of restriction.
For example: typical - 60 km / h.
Https://en.wikipedia.org/wiki/Speed_limit
There are exceptions, but on the whole it is so. Therefore, the work of this function, calculated on the general rule, can help the driver do not forget about your current speed. In all other cases, as a rule, speed limit (in the city) is less, but not more!
The driver himself must control the traffic situation, but if he is forget, he will hear a sound signal! And this will allow less frequent glance at the speedometer.
3) A single sound signal, if the speed limit is exceeded, will not make it worse. He will not keep on babbling all the time!
It's just an indicator. You created that! You can not include at all.
4) Why use another special device if such a function can be performed by the DVR?
I think I do not need a windshield on which hangs a bunch of different devices.
And if the car has a factory video registration system, then I do not need a separate DVR! )) bla - bla - bla - etc.
P.S. Let's be easier to relate to everything.
And do not require AI where there is only an option for the Script!