Your GoPro’s data is already inside the video.

What YouMetry reads

• The MP4’s GPMF telemetry track: position, altitude, 2D and 3D speed.
• Both generations of the format: GPS5, and GPS9 introduced with the HERO11, which also reports fix quality — points without reception are discarded.
• Videos split into chapters by the camera.

How to do it

1. Turn on GPS in the camera preferences, and give it a minute outdoors to lock onto satellites before you set off.
2. Copy the original MP4 — not a version recompressed by a messaging app or a social network, which would have lost the data track.
3. Open it in YouMetry: video and telemetry come in together.
4. Pick the Car, Motorcycle or Drone profile: the gauges on offer change with the vehicle.

What you get

• Speedometer, G-forces, course map, altitude, lap timer.
• On track: laps detected automatically, sectors, best lap, and a corner-by-corner table (minimum speed, braking point, lateral G).
• The route replayed in 3D over terrain, with a car or motorcycle model of your choice.

Good to know

• Not every GoPro has GPS: check your model. Without GPS there is neither position nor speed in the file — in that case add a GPX track from your phone or watch.
• The YouMetry mobile app can trigger the GoPro over Bluetooth as it starts recording data.
• For engine data, combine the GoPro video with an OBD-II or RaceChrono file.

Questions

How do I show speed on a GoPro video?

Film with GPS on, then open the original MP4 in YouMetry: speed is read from the file and shown as a dial on the picture.

Do I first need to extract the data with another tool?

No. YouMetry reads the telemetry track straight from the MP4.

My video opens with no position gauges: why?

Either GPS was off or had no reception yet, or the file was recompressed and lost its data track. Start again from the file on the memory card.

See also

Several files can be combined in one project: position from one, engine data from another. See the comparison with other software.