Export and add back GPS info from mp4 file

[jparchib]

Hi, I need to edit a 360 file created with Insta360 Pro2 cam.  The stitched file was created using the Insta360 stitcher app and have the GPS data imbeded but if I bring this file in premiere, do my edits and render back, the gps data is lost.  I was able to get the gps data using "exiftool.exe -p gpx.fmt -ee "pt2-1.mp4" > pt2-1.gpx".

But i'm not sure how to import back this data into my new edited file.  I'm also not sure if the way I use to gather the data in the first place is the correct way to put the data back in the exact same format.

Thanks for your help!

[Phil Harvey]

ExifTool can not write timed metadata to video files.  It may be possible using some ffmpeg trick to copy it from the original video, but I don't know how or if that could be done.

- Phil

[StarGeek]

I haven't seen any program yet that can re-embed a GPS track and given the myriad of ways it can be embedded (what is it, 60 ways so far?), I have doubts that there will be unless someone comes up with a real standard to do so.

[Phil Harvey]

Currently 61 formats decoded by ExifTool, but there are a bunch I still haven't figured out.

There is a the camm standard used by Google StreetView that would be a leading contender if the various players wanted to get together and agree on something.  But of course the Insta360 doesn't use this method.  If I ever add the ability to write this with ExifTool, I would probably start with the Google camm format.

- Phil

[StarGeek]

I remember that now.

Hmmm... This page instructs that if the GPS data isn't already in the video, you would upload a GPX file.  I wonder if the processed file would contain the GPS data re-embedded.

Of course, it's probably been recompressed which to more quality loss.

[Phil Harvey]

Interesting.