another noob needing help extracting gpx data from a DENVER ACG-8050WMK2

[robot797]

it could be altitude but it it would be incorrect data

[Phil Harvey]

As it turns out, I've already decoded this format with a custom config file (read here).

But it would be better if ExifTool had built-in support for this, so I will add this feature in ExifTool 12.23.

- Phil

[robot797]

yea as I said on the 1st post I tried that
and it only gave me a empty result

[StarGeek]

Ah, yes, that would be my fault.  I didn't actually check out the link, assuming it was a link to the main extract gps from video thread.

I edited and tested the config file against your file and it's definitely reading the tag and appears to be parsing the data, but the rest of what's happening is a bit beyond my ability to figure out what might be going wrong.

[robot797]

now I am wondering what I am doeing wrong

when I am using this
M:\VIDEO>exiftool -config gpslog.config -p gpx.fmt -ee TEST.mov

I get this

Code Select Expand

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

[StarGeek]

You're not doing anything wrong.  For some reason the config file isn't setting the GPS tags.  I get the same results.

[Phil Harvey]

Hmmm.  This works with version 12.02, but not 12.03 or later.  I'll have to look into this.

- Phil

Edit:  OK.  Attached is a config file that works with ExifTool 12.03 to 12.22.  This broke when I made an internal change to the format of the Composite tag ID's (the config file relied on internal details of how this was implemented).  ExifTool 12.23 and later will have the ability to decode this without a config file.

[robot797]

I have bad news
I tried version 12.23 12.22 and 12.21
they all give a blank file

[Phil Harvey]

Here is what I get with version 12.22:

Code Select Expand

> exiftool -ver
12.22
> exiftool -config ~/Desktop/gpslog.config -p fmt_files/gpx.fmt -ee ../testpics/gps_video/20210318_095308.MOV > out.gpx

And out.gpx is attached.

- Phil

[robot797]

still a blank result

Code Select Expand

fmt_files/gpx.fmt
fmt_files/gpx.fmt
fmt_files/gpx.fmt
fmt_files/gpx.fmt
fmt_files/gpx.fmt
fmt_files/gpx.fmt
fmt_files/gpx.fmt
fmt_files/gpx.fmt
fmt_files/gpx.fmt
...


[Phil Harvey]

You will get this if the file "fmt_files/gpx.fmt" doesn't exist.

Instead of "fmt_files/gpx.fmt" in your command, type the actual path to the gpx.fmt file on your system.  If you haven't downloaded it yet, you can get it from here.

- Phil

[robot797]

yay it works
told ya I was a noob
and the dash cam software accepts it
now I just have to find out how to synchronize them