Format of GPSData000001.txt file to GPX file

D

dasena

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Hi there,

I was wondering if anyone had any information on the expected file formats of GPX and folder structure for dashcam viewer?

I took 30 minutes or so and wrote a basic app to display the videos from my A500S to figure out the GPS data file (allowing zooming, pausing, loading different files etc...) which I overlaid the data once figured out and rather than extending it further with maps etc was looking to just transform the GPSData file to a GPX file to load into Dashcam viewer or similar software...

I know the following format of the GPS Data and was wondering if anyone knows the remaining 3 fields that I think are related to acceleration and altitude possibly?

1662951137,A,53.XXXXXX,-6.XXXXXX,17000,777,3,93,34,0,0,0,0

1662951137 = Unix Timestamp (needs to be offset to the video files as these use the system time not the GPS times - done manually using my app, but will figure out a way to automate it... or sync the system time to the GPS time...)
A = Normal record, ignore V as no GPS signal found
53.XXXXXX = Latitude
-6.XXXXXX = Longitude
17000 = Orientation (17000 / 100 = 170.00 Degrees... )
777 = Speed in cm/s (is this a standard measurement in GPS?! - (777 * 3.6) / 100 = 27.972 km/h)
3 = ???
93 = ???
34 = ???
0 = Constant
0= Constant
0= Constant
0= Constant

What structure would the GPX file need to be in order to contain the time, lat, long, orientation, speed and mapping to file?

In addition, would anyone know what folder structure dashcam viewer needs in order to display the rear and front camera at the same time?


1663251189686.webp



Thanks for any help...


D
 
dasena said:
Hi there,

I was wondering if anyone had any information on the expected file formats of GPX and folder structure for dashcam viewer?

I took 30 minutes or so and wrote a basic app to display the videos from my A500S to figure out the GPS data file (allowing zooming, pausing, loading different files etc...) which I overlaid the data once figured out and rather than extending it further with maps etc was looking to just transform the GPSData file to a GPX file to load into Dashcam viewer or similar software...

....

Thanks for any help...


D
Click to expand...

dasena,

Were you able to find any help or solutions to this? I too am vexed by this situation as I very much want to use Dash Cam Viewer's mapping tools, but can't figure out how to get the monolithic GPS file coordianted with the video files...

This thread may give you some additional insight, but it doesn't seem to apply to the A500s camera (as far as my research has revealed):

Extract GPS data from 70mai dashcam

Extract GPS data from 70mai dashcam
exiftool.org

Good luck!
phammer
 
dasena said:
Hi there,

I was wondering if anyone had any information on the expected file formats of GPX and folder structure for dashcam viewer?

I took 30 minutes or so and wrote a basic app to display the videos from my A500S to figure out the GPS data file (allowing zooming, pausing, loading different files etc...) which I overlaid the data once figured out and rather than extending it further with maps etc was looking to just transform the GPSData file to a GPX file to load into Dashcam viewer or similar software...

I know the following format of the GPS Data and was wondering if anyone knows the remaining 3 fields that I think are related to acceleration and altitude possibly?

1662951137,A,53.XXXXXX,-6.XXXXXX,17000,777,3,93,34,0,0,0,0

1662951137 = Unix Timestamp (needs to be offset to the video files as these use the system time not the GPS times - done manually using my app, but will figure out a way to automate it... or sync the system time to the GPS time...)
A = Normal record, ignore V as no GPS signal found
53.XXXXXX = Latitude
-6.XXXXXX = Longitude
17000 = Orientation (17000 / 100 = 170.00 Degrees... )
777 = Speed in cm/s (is this a standard measurement in GPS?! - (777 * 3.6) / 100 = 27.972 km/h)
3 = ???
93 = ???
34 = ???
0 = Constant
0= Constant
0= Constant
0= Constant

What structure would the GPX file need to be in order to contain the time, lat, long, orientation, speed and mapping to file?

In addition, would anyone know what folder structure dashcam viewer needs in order to display the rear and front camera at the same time?


View attachment 61781


Thanks for any help...


D
Click to expand...
These fields (1662951137,A,53.XXXXXX,-6.XXXXXX,17000,777,3,93,34,0,0,0,0) might be the recording of accelerations (vibrations) in 3-axes.
If you plot the values on a graph you will see that they have no logical sequence.
 
dime said:
These fields (1662951137,A,53.XXXXXX,-6.XXXXXX,17000,777,3,93,34,0,0,0,0) might be the recording of accelerations (vibrations) in 3-axes.
If you plot the values on a graph you will see that they have no logical sequence.
Click to expand...
See the Dashcam Viewer Users Manual pp52-54. All specs and sample data are provided.
 
  • 1735534427 - time
  • A - gps fix
  • 46.835285 - lat
  • 29.454746 -long
  • 0 - direction
  • 27 -speed
  • -86 - Z accelerometer / G-Sensor
  • 5 - Y accelerometer
  • 56 - GPS speed ratio (internal metric)
  • 0,0,0 - hardcoded/reserved
 
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