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Speed and altitude counter for your jump videos

Saut en tandem en chute libre avec affichage de la vitesse à 220 km/h et de l’altitude à 3334 m sur une vidéo de parachutisme

You film your jumps and people keep asking you, "How fast were we going?" Here's a way to answer for real: a speedometer altitude + speed which scrolls in real time on your video, calculated from the actual recorded data During your jump, don't use made-up numbers.

You drop off the CSV file Exported by your altimeter/jump computer, you choose your cadence and format, and the tool generates a file ready to be dragged into DaVinci Resolve (Fusion page). The rest of the editing will take you two minutes.

Your data never leaves your device. All the calculations are done in your browser: no files are sent over the Internet, nothing is stored.

Convert your jump data (CSV) into a counter altitude + speed Ready for DaVinci Resolve. Your file remains on your device, Nothing is sent over the Internet.

How do I use it in DaVinci?
  1. Page Montage: pose a Composition Fusion on a track above your video, which starts right at the plane exit.
  2. Double-click → Fusion page. Drag the file .setting in the node editor (or copy and paste its contents).
  3. Connect the two Text+ at a node Merge (Background + Foreground), then the Merge at MediaOut.

The displayed speed is the vertical speed calculated from the (barometric) altitude, not the airspeed.

How it works, step by step

  1. Export your jump data to CSV. From the app JumpTrack from your recording altimeter Bluetooth L&B Altimeters (which retrieves the jump via Bluetooth from your altimeter), retrieves the jump file.
  2. Submit the CSV in the tool above.
  3. Choose your frame rate (24, 25, 30, 50 or 60 frames per second, the same as your timeline) and your format (vertical 9:16 for Reels/TikTok, horizontal 16:9 for YouTube).
  4. Generate and download the .setting file.
  5. In DaVinci Resolve : place a Fusion Composition on a track above your video, by making it start right as you get off the plane. Open it in Fusion view, drag the .setting file into the node editor, link the two Text+ elements to a Merge element, and then to the MediaOut. It will synchronize automatically.

What the counter displays

The counter shows your altitude (in meters / feet) and your vertical fall velocity (in km/h / miles), calculated from the change in altitude. This is your true descent speed, frame by frame: it starts from zero at the exit, increases with acceleration, then drops at the opening. It's not airspeed or ground speed, just the vertical component, the one that really matters when you want to know "how fast you're falling.".

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Which altimeters are compatible?

Altimeters L&B Bluetooth (LB Altimeters) synchronized via the JumpTrack app: Optima 3, Protrack 3 and Quattro 3. They all export the same CSV format from JumpTrack. If another device produces a CSV with altitude over time but in a slightly different format, write to me: it can be adapted.

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Do I need a GPS?

No. The meter is based on (barometric) altitude. On the vertical component, it is often even more stable than a GPS reading.

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Is my data being sent anywhere?

No. Everything happens in your browser. Your file stays on your device; nothing is uploaded or stored.

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Which format should I choose?

Vertical 9:16 for Instagram, Facebook, and TikTok; horizontal 16:9 for YouTube. You can generate both from the same CSV file.

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Is it free?

Yes. It's a tool made by a skydiver, for the community. If it's useful to you, share it. 🪂