Posting this here since the altitude value on the .SRT file may be specific the Mavic Air 2.

The SRT file generated from a flight appears to reporting my altitude relative to either the takeoff position or the controller.


Is there a method to adjust this pre flight so that the altitude reported in the SRT file is from Sea Level?

If not can anyone think of an easier way to adjust the SRT to add to the  altitude value to more accurately represent the value for import?
As an example lets say I knew I was launching from 400 Meters about see level.
When I start recording from launch it would indicate my altitude of
[altitude:  0.00000]
at max altitude
[altitude:  121.92000]
Can anyone think of a streamlined way to modify the entire SRT file to adjust the altitude up 400 meters?

I was doing exactly opposite with my Mavic 2 Pro. Since DJI drones use a barameter to measure air pressure I was advised NOT to rely on the altitude reading. My video caption looks like this. I was flying 115m above the ground (the take off point was nearly equal to the ground since I just flew straight above).