# Writing telemetry data (specifically, depth) to gopro video?

**URL:** <https://discuss.bluerobotics.com/t/writing-telemetry-data-specifically-depth-to-gopro-video/1833>\
**Category:** General Discussion\
**Created:** [December 5, 2017, 6:33pm UTC](https://discuss.bluerobotics.com/t/writing-telemetry-data-specifically-depth-to-gopro-video/1833 "2017-12-05T18:33:44Z")\
**Posts on this page:** 1\
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**Author:** ![jwalser](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/jwalser/32/2234_2.png) [@jwalser](https://discuss.bluerobotics.com/u/jwalser)\
**Post date:** [December 5, 2017, 6:48pm UTC](https://discuss.bluerobotics.com/t/writing-telemetry-data-specifically-depth-to-gopro-video/1833/2 "2017-12-05T18:48:21Z")

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Units/meanings of each of the fields are here: [http://mavlink.org/messages/common](http://mavlink.org/messages/common).

You can derive the depth yourself using the reported absolute pressure, or use the GLOBAL\_POSITION\_INT.alt field, which is the depth that the autopilot calculates using the specified GND\_SPEC\_GRAV parameter for the specific gravity of the fluid you are diving in.

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_[View the full topic](https://discuss.bluerobotics.com/t/writing-telemetry-data-specifically-depth-to-gopro-video/1833)._