Extracting a .gpx file from a .mp4 gpmd (GoPro) stream

[himynamesdave]

Hi all,

I've got an .mp4 video from a GoPro Fusion with GPS measurements recorded on a gpmd track.

Code Select Expand

exiftool -ee -G3 VIDEO_7152.mp4 > VIDEO_7152_track_metadata.txt

Validates that GPS is logged.

So now I want to extract the gpmd track as a properly formatted gpx file.

To try this I run...

Code Select Expand

exiftool -ee -p gpx.fmt VIDEO_7152.mp4

and get

Code Select Expand


gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt
gpx.fmt


Interestingly, the lines correspond to the count of [DocN]'s (0-16) returned using the first command.

Video file is here: https://drive.google.com/open?id=1XspMMI4Vd4eX4yLJ-FAwKOadhYzmjxH1

I feel I'm close to cracking this... or maybe not! Perhaps you can help point me in the right direction?

As a side note, I found this as an alternative (https://github.com/juanmcasillas/gopro2gpx), though it appears based on the docs, Exiftool could also produce the same sort of output, which would be perfect for me.

Thank you!

[Phil Harvey]

You're just missing the gpx.fmt file.  It must be in the current directory when you run your command.

- Phil

[himynamesdave]

Doh! Thanks, Phil!

Working perfectly now.