SportsCameraOverlay is a command line facility to overlay GPS info on videos taken with a sports (helmet) camera.
Currently tested and working with a Contour GPS and a Contour+2 camera.
The GPS enabled line of contour cameras store the GPS (NMEA sentences) in the subtitles of the video file, so using this program with a GPS enabled contour camera simplifies things as there is no need to line up the starting points of the video and the GPS data.
Can also be passed a file that contains GPS...