Extracting GPS tagged stills from video

Questions & Answers
1

Anyone that can recommend a way to extract GPS tagged stills from video recorded on a DJI drone, I know the data is in the subtitle file and also in the DJI log, just wondered if anyone had used an automated extraction tool?

3

For anyone that finds this looking for an answer:

  1. Extract stills with ffmpeg
  2. Add timeshift per image with exifTool
  3. Get flight GPX log from Airdata
  4. Geotag images with GPX using exiftool

I’ve got a .bat for doing this now if anyone ever wants it but it’s ripped off someone elses code I found online here

1 Like
4

Here is the end result

This wasn’t from a flight deliberately targeting a photogrammetry survey, just from about 100 frames from 4k video some of which were blurry, COLMAP will use the GPS data to help tagging but Meshroom gives better end results (you need to scale and georeference the end result in third party software though)