Hey, for who use DJI Action!
I've developed a small open source tool to extract DJI GPS data from the video and convert it into NMEA file. So that you can import the GPS data into RaceChrono.
The tool is quite easy to use, just click "Select DJI Video (.MP4)" and select your video file. Then click "Convert". After a while, click "Download .NMEA". That's it!
The tool is workable both on mobile and PC. Here's the tool's link:
https://martinmht.github.io/dji2racechrono_web/
It would be very appreciated if you can give a star on the github page.😊