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DJI FPV SRT file Altitude
2116 9 2021-6-30
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djiuser_kuhPujJgBSn6
lvl.1

Switzerland
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Hello,

i deeply appreciated the add of SRT file export within the DJI FPV. But i wonder if the altitude is correct into this file? i used Telemetry overlay or another website to look into the file and it seems that the altitude is not correct, or do I miss something? I usually fly within a range of 40-50 m altitude difference, but it indicate only around 4-5 m. What is the metric of this value for exemple?

[iso : 140] [shutter : 1/640.0] [fnum : 280] [ev : 0] [ct : 5743] [color_md : default] [focal_len : 146] [latitude: 46.210641] [longitude: 6.185662] [altitude: 42.207147] </font>


I'm based in Geneva in case.

Best regards for your support und help
2021-6-30
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KOMTiKi
lvl.1

Luxembourg
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I have exactly the same issue. I'm using firmware from 15 June 2021. Based in Luxembourg.
2021-7-12
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djiuser_kuhPujJgBSn6
lvl.1

Switzerland
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KOMTiKi Posted at 7-12 05:48
I have exactly the same issue. I'm using firmware from 15 June 2021. Based in Luxembourg.

I got a precise answer from DJI support in Germany, DJI is unable to give more accurate Z (altitude) telemtry info as those are based on the barometer which is not accurate cause of self-turbulance during elevation.
2021-7-15
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J_De_Ese
lvl.2
Flight distance : 2115942 ft
Spain
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I have the same problem with my readings...

Updated the drone last Friday and I was really happy to see that the .srt are back... but the altitude readings are totally off.


I really hope they fix this.
I use flightcontrollers with baro for my other fpv drones and the readings I get are better than these ones.
2021-8-16
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swunnink
lvl.3
Flight distance : 2276473 ft
Netherlands
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I also have the same issue for the SRT files.
The altitude displayed by the goggles appear plausible to the actual altitude.

I mostly fly between 10 an 20 metres (data from the goggles) but the SRT files says my altitude is between minus 8 and minus 2 metres.

Why is there a difference between the altitude in teh goggles and the SRT file ?
2021-9-4
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frankymusik
Captain
Flight distance : 27136273 ft
  • >>>
Germany
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What a difference!
That can not be really.....
2021-9-9
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BramSchats
lvl.4
Flight distance : 1588760 ft
Netherlands
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Same problem here, this is a calculation from the gps position, how is this so hard to display?
2021-12-3
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0Kajuna0
Captain
Flight distance : 249606 ft
Spain
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Here's the problem in action (see the altitude vs time gauge and the vertical speed indicator) (the video might still be processing on YouTube)



This is obviously not a problem with the barometer, but with the way the data is recorded in the SRT logs. The altitude data is divided by 10.

Can DJI shed some light on when this issue will be resolved? This happeens on firmware V 01.02.00.00

SRT logs of other drone models had similar problems in the past, and some of them were fixed with firmware updates.
4-11 07:11
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SynapticCleft
lvl.1
United States
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I think this is the same sort of question:   I flew my FPV up to 1200ft and it registered as 50.47345 in "Altitude" (in the frame I was looking at.)  Wondered how that was actually measured.   
6-12 10:26
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vkx86
lvl.2
Israel
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Here is utility that fixes that:
https://www.reddit.com/r/Djifpv/comments/xchhea/dji_fpv_altitude_srt_fix/

Note, that if you start recording mid-flight that will require to input shift amount basing on Ur guess, so better start recording before takeoff.


11-1 20:21
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