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Hiker
Posts: 32
Re: Extracting the metadata in a useful format

Hi Erwin,

 

What we actually get is kind of a burst - a package of lat/lon/alt/speed/3dspeed data itmes associated with single data-time point. Most often we get 18 samples in such packages, but occasionally 17 or 19, maybe also other amounts. Then the delta time between those packages is close to 1 second though again it can be slightly less or more. I think that the everage frequency is 1/18.0xx.

In my application I am averaging samples from single burst and giving them the TS as provided by GoPro5 - actually duration time from the beginning of the movie rounded to seconds.

If I would like to provide raw samples with timestamps I would need to extrapolate them - e.g. uniformly within the burst.

 

cheers!

Eligiusz

Highlighted
Hiker
Posts: 32
Re: Extracting the metadata in a useful format

Hi!

Now you can download your GoPro 5 GPS data in GPX format. It can be then used to upload your workouts to Strava or Endomondo:

https://www.trassy.pl/blog/syncloc

 

cheers

Eligiusz

Tourist
Posts: 4
Re: Extracting the metadata in a useful format
Thanks! You just made me not regret/swap my 5 Session for a 5 Hero :)
I'm just getting a separate datalogger for my gps requirements.
Hiker
Posts: 32
Re: Extracting the metadata in a useful format

Hi!

I added new features to https://www.trassy.pl/blog/syncloc:

- altitude and speed chart types

- selection in charts synchronized with video and map

 

I changed speed units in CSV export from [m/s] to [km/h]

 

Not sure whether current parser could work with GoPro Hero 6 GPS meta data - looking for some GoPro 6 samples to verify/enhance. Any hint appreciated.

 

cheers!

Sightseer
Posts: 2
Re: Extracting the metadata in a useful format

I am very interrested in this, however your link https://www.trassy.pl/blog/syncloc seems broken?

Hiker
Posts: 32
Re: Extracting the metadata in a useful format

Thanks for feedback. Please check it now - I did a quick fix. I will be able to have closer look later during the day.

Please make sure that your GoPro files contain GPS meta data (movie recorded with location on) - at the moment the application is not resilient against missing GPS meta data. In case you try to load such file you need to releoad the page.

I am prepareing a version for synchronizing external GPS file (gpx) with any movie - soon.

 

cheers!

Sightseer
Posts: 2
Re: Extracting the metadata in a useful format

It is working now, looks great! Also working with my Hero 6 file :)

 

I read there is more metadata in the files, such as camera temperature, acceleration etc., which should also be there when the GPS data itself is not. Will you be adding more sensorinformation?

 

Hiker
Posts: 32
Re: Extracting the metadata in a useful format

Glad to know it works for you and you like it :)

 

I haven't planned adding other types of meta data, like accerelation, since the main goal of my application is to provide a site which allows to easily document bike trails and explore them. Honestly, I would be interested in temperature thought data provided by GoPro indicates internal temperature of a camera - so not really usefull (unless I am wrong).

 

Anyway, if there is a demand for other types of meta data from GoPro I can re-prioritize features.

I would propose to continue such discussion - requests, comments, issues - on trassy.pl fb page:

https://www.facebook.com/ruszamy/

 

cheers!