With the "Display speed" option enabled, the K2 records the current speed within the video.
As the speed is measured by gps, it takes some time from startup till the speed is show. During that phase, the recorded (and shown) speed is simply 000. That´s absolutely ok.
But if the gps reception fails while driving, the K2 simply holds the current speed. This leads to situations where I am e.g waiting at a traffic light, but the K2 still shows "70km/h" in the video. Well...while it is obvious that the recorded speed isn´t correct in this situation, this behaviour of the K2 can cause inconvenience in other situations.
Imaging you are involved in an accident within city limits and the other driver states that you were speeding. Of course you were not. So you take your video as an evidence to proof this, but unfortunately the gps lost gps reception some minutes ago and the speed in the video still shows the speed you were riding some minutes ago on a highway or country road.
So I would suggest to modify this behaviour in a way that the speed is always shown (and recorded) as 000 if the gps looses reception. Regardless of the speed recorded before.
@Rock Liu
Could you please give a comment about my change request? What do you think about it?
@Rock Liu
Could you please also reply to the original topic regarding what is shown if GPS receipt is bad?
If you don't want the GPS data at all, why not just disconnect the receiver? It won't stop the DVR from working will it?
I also don't include the displayed speed in the video overlay. Does anyone know how the GPS data is encoded into the video? Does each video frame have the ability to include its own meta data? I presume not and therefore conclude that some other scheme is being used. Perhaps a few pixels in each video frame are dedicated to storing this data. Or perhaps an inaudible audio track? Or closed caption data?
Regardless of the method, is it possible to recode the video to remove the GPS data? One could collect the GPS data for a record of your trip, but "export" a GPS free version of select video clips if needed.
This is more or less why I have speed display turned off. The information can much more easily be used against me than it can help me, so why record it?
Yes, speed can still be worked out from the GPS position. That's what Dashcam Viewer does, I think. GPS will still "tattle" on me if I'm egregiously speeding, but then again I don't ride like an idiot. It will be pretty much impossible for someone to claim I was speeding, when the GPS position shows otherwise.