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Tourist
Posts: 2

Incorrect speed and height values at GOPRO telemetry

My friend has a world record register at guinness book, https://guinnessworldrecords.com/world-records/fastest-100-m-rap-jumping , he is using go pro hero 5 to measure velocity and height in a 20 meter vertical rope, however go pro reports that the speed is 8km / h and the height is 14 meters. We calculated the speed and the correct value at about 55 km / h.

 

Could GOPRO help us to correct the camera's telemetry data so that we can expose the correct data in the video? Thanks in advanced.

Nomad
Posts: 210

Re: Incorrect speed and height values at GOPRO telemetry

A huge part of the situation is the GPS lock.   

 

Ideally have the camera on standby & stationary for several minutes for the best results.  Top facing up, lens vertical, not tilted etc with a clear view of the horizon in all directions.  

 

I have not measure the 5, but of the 6B and 7B, the 6B is clearly better.   Faster locks, higher accuracy.   In the horizontal plane the 6 usually can hold 1M accuracy, the 7 is generally around 2 and loses a good lock more easily.   Altitude readings are more difficult due to inherently fewer satellites helping with the triangulation. 

 

I'd be happy to look at your files if you'd like, can examine the data.   LRVs are best cuz smaller.   Once edited, the videos no longer have the embedded data using most video editing software. GPS.png

Tourist
Posts: 2

Re: Incorrect speed and height values at GOPRO telemetry

Thank you for your answer.

 

How can I get these files from camera? What is the file extention?

 

How Can I send you these files?

 

At least, do you think that gopro hero5 has sensibility to measure the vertical rope movements? Remember the height is 20 meters and the speed is at about 60km/h.

 

Thanks in advanced.

Highlighted
Nomad
Posts: 210

Re: Incorrect speed and height values at GOPRO telemetry

I think we can message on here, an option?   

 

If so you can email me a short file or dropbox it etc, just let me know.

 

GPS is not the best at alttude, inherently.   That's why some devices that focus on helght / altitude use several ways to get information, which is then processed accordingly, taking them all into account.  You can get a good idea, sure.   But maybe not for backing up or setting a record.   

 

The GPS antennas on GoPro's with the feature is right above the lens under the top panel.   That's why this is good to take into account if you need that data.   So for instance a metal frame with the camera upside down and inside a metal roofed car with the camera set to quikcapture from full off is not the way to go for good data.