After tinkering a bit but finally successfully processing videos from my Viofo A129 dash cam and uploading them to Mapillary, there is one last thing I wanted to try: using the A129 time lapse mode to be able to collect more imagery before the storage space on my camera runs out…
This does not seem to be possible without recording your GPS breadcrumbs using a separate device, because the location information written into the movie stream by the camera is sparser than the video frames. Using
exiftool -m -p gpx.fmt -ee -ext mp4 -w! %f.gpx time-lapse-movie.MP4
I get 4 trackpoints for a movie that contains about 300 frames.
This could also be a result of limitations in the way exiftool
parses the MP4 file, but looking at the relevant documentation section I don’t see a way to tweak this.
What I think I will do instead is:
- Buy a larger micro-SD card (they are getting cheaper all the time)
- Reducing the video quality
In order to be able to capture more of my longer trips. I’m about to make [this drive] and I’ll test it then!
Discussion
Comment from bob3bob3 on 8 January 2023 at 00:00
Gday
Am sure you have checked, but looking at the exiftool doc
-ee3 rather than just -ee
I have not tried this myself, just reading stuff..
(same username for mapillary)
Cheers Bob