How you mount your dashcam is critical to collecting quality video footage. The better the video footage you collect the better the map. The better the map, the better the rewards for contributors. It may take a few extra minutes to get it right, but since contributors drive for hours upon hours it is well worth the additional effort.
❌ Too much car roof
This is a fairly common problem, and is easily addressed by tilting the camera upwards a bit so that less of the car roof is in the frame.
If the footage contains any aspect of the vehicle's interior that is not going to produce a quality image for the map. Below you can see in the bottom corners one can see the vehicle's dashboard.
Dashcam pitched too far down.
The camera is pointed at traffic side, rather than pointing at the sidewalk and buildings. For example, if you are driving in the United States, to fix this issue you would need to mount the camera on the right hand side.
High quality due to :
Almost no car roof in the frame
No obstructions (e.g. antenna)