if wifi is on it records at 8mbit
Ok ... having just been out to check, WiFi may have still been on, as I noticed it was displaying the SSID and password when I checked the screen after holding down the WiFi button. A short recording in the driveway now has the bitrate back to 16Mbps.
I did not see this anywhere in the documentation that enabling WiFi would reduce video quality from 16Mbps to 8Mbps . Some of us might have bought the camera because it offered WiFi connectivity as a feature, and now it turns out that using WiFi actually reduces the quality of our videos?! And perhaps it is also causes file corruption with regard to embedded GPS data as reported in the thread quoted above?