I’ve eventually got around to having a close look at the results, and here are some pics to show how it snaps the video on the default settings, the first one is the full image shrunk to fit here, the second is a pixel accurate clip and the third is a zoom into a segment. Clearly the sharpness control is set too high, but this is not visible on normal viewing and the camera is generally good apart from the G-sensor being wayyyy too sensitive for an MX5 suspension.
Arrival at Gaydon
part of the picture
and a detail zoom, 1000 x 1000 for the 500 x 500
Pictures reposted 26/04/2020 directly rather than via imgur