Hi Flag97,
Glad you are making friends with your camera.
About the date and time. Mine automatically uses the UTC time from the GPS satellites and stamps that in the video, yet it allows me to manually enter a time and date. I think it ignores the manually input date and time. Are you saying that your VF960s is using CET not GMT ?
Are you referring to the compass in the video player software ?
The erratic speeds. I bet that where you park or where you experienced erratic speeds being shown you have a poor GPS reception. Either under trees or between tall buildings or even in a road tunnel. When you start the camera up it can give false speeds
The fault is with the VF960S firmware. It does the speed calculation on less than five acquired satellites and gets a silly answer, but it doesn't tell anybody that it's got a silly answer, it just sends it to the screen.
If you want to get really technical try reading the
http://en.wikipedia.org/wiki/Dilution_of_precision_(GPS) article, but try to imagine triangulating a position only using two satellites.
When my SatNav has less than five acquired satellites the location arrow bounces around wildly, and less than three it shows a question mark, but it does show the number of acquired satellites on the screen to enable the user to see if the speed can be trusted.
I've tried to get Viofo to consider displaying the number if acquired satellites next to the stamped time and date without success. If they trap the number of acquired satellites, it's only one line of code to put it on the video.
Communication can be a problem with Chinese companies.
Regards,