TandemEdit Mac · the editing station

Plug in the GoPro. Check three points. GO.

The station identifies the guest by QR code, finds exit, canopy opening and landing, and edits them into a main video, best-of, reel and photo selection. Processing runs on a Mac mini at your dropzone. The manifest then sends the link.

In daily use on Mac mini M4 Camera is emptied only after the copy has been verified
Illustration: Schnittplatz im Hangar, Monitor mit Zeitleiste, angeschlossene Actionkamera, draußen das Absetzflugzeug
GoPro detected11 clips · checksum running
Markers foundExit · Opening · Landing
Versions in progressVideo · Best-of · Reel · Photos
In a guest's day
  1. 01Voucher and booking
  2. 02Check-in on the iPad
  3. 03Load and jump
  4. 04Editing at the stationThis page
  5. 05Media page and purchase
  6. 06Settlement
From the GoPro to the link

Nine steps. Three of them are done by a person.

Before the jump the camera films a QR code, after landing it is plugged in, then a quick check. The station, NAS and manifest handle the rest, right up to the message to the guest.

Import
  1. 01

    Film the QR code

    Before boarding, the tandem instructor taps his guest on the staff terminal or at the station and films the QR code briefly with the GoPro. Forgot? Then the guest is picked from the day list at the station.

    Tandem instructor
  2. 02

    Plug in, import with checksum

    After landing, the GoPro goes on the USB cable or the SD card into the card reader. The station loads all clips, verifies every file and finds the QR code along the way. Guest, load, tandem instructor and booked package come from the manifest.

    Tandem instructor · Station
  3. 03

    Empty the camera

    Only once the copy is confirmed is the GoPro emptied. Until then it says in red: do not unplug. "Keep clips" cancels the emptying.

    Station
Edit
  1. 04

    AI markers

    The analysis divides the clips into six scenes and sets exit, canopy opening and landing, each marker with a confidence score. For a typical jump this takes around 20 seconds.

    Station
  2. 05

    Check and GO

    Three short loops, three traffic lights. If all are green, the edit starts by itself after a 30 second countdown; any intervention stops it. Otherwise the tandem instructor presses GO and confirms with "Markers correct? YES", or first drags a marker into place.

    Tandem instructor
  3. 06

    Versions are created

    Main video, best-of, reel and photo selection. Whatever the guest has not booked is additionally created as a watermarked preview and is finished first.

    Station
Deliver
  1. 07

    Backup to the NAS

    The project folder is copied to the NAS and verified by checksum. Only then does it count as backed up.

    Station · NAS
  2. 08

    Upload to cloud storage

    After an adjustable delay, a service on the NAS uploads the media: the full version if it has been purchased, otherwise the watermarked preview. If the internet goes down, it waits and continues afterwards.

    NAS
  3. 09

    Link to the guest

    As soon as everything is available, the manifest sends the guest an email with their personal link, by SMS as well if desired.

    Manifest

Simplified view with sample data

AI markers

When the jump begins is in the camera's data.

Besides the picture, the GoPro also records motion data: acceleration around 200 times per second, plus rotation and gravity. Together with the audio and its own image AI, the station sets three markers: exit, canopy opening and landing.

Scenessix categoriesMotionGoPro sensorsAudioCamera audio levelImage AIStill frames per clipBriefingWalk to theaircraftClimbFreefallCanopy rideLanded1 gDip below 1 gOpening shockTouchdown joltMedian 4.5 gExitOpeningLanding ScenesMotionAudioImage AIBriefingWalk to theaircraftClimbFreefallCanopy rideLanded1 gDipbelow 1 gOpeningshockTouchdownshockMedian4.5 gExitOpeningLanding
Diagram of a jump, not to scale. The station works with the handcam clips; the scenes are summarized here.

Motion data

At the exit, acceleration briefly drops below 1 g, the opening shows a clear shock, the touchdown a sharp one. Our own AI models derive the fine values from this.

Audio

In freefall the wind roars, under the canopy it goes quiet. The audio helps divide the scenes and detects the "Landed" scene even when the touchdown was not filmed.

Image AI

A scene AI looks at five still frames per clip. Together with the sensor and audio data, it assigns each clip to one of the six scenes.

Every marker gets a confidence score. A plausibility check requires exactly one freefall, the opening after the exit and the landing after that. If something does not fit, the score drops. This becomes the traffic light in the check:

  • Green confidence score 0.75 or higher without warning
  • Yellow uncertain, please take a look
  • Red not found or very uncertain
Measured, not promised

This is how accurate the AI markers were when re-measured.

We compared the AI's markers with manually set ones, on test sets from our own jumps. For the exit it was 169 jumps that were never seen during training.

0.12 sExit: typical deviation (median) across 169 jumps. 94% were off by less than half a second.
0.4 sCanopy opening: Median across 112 test jumps. On a second test set it was 0.7 s.
under 1 sLanding: Median between 0.36 and 0.74 s depending on the test set.
97 %Scenes: Share of clips in the correct scene, measured across 1,616 clips (before the scene image AI was added).

For comparison

Our earlier audio-based detection was off by a median of 5.2 seconds at the exit. These are exactly the points you search for when editing by hand.

Why a person still checks

A median is no promise for every jump. That is why the station only starts by itself when all three traffic lights are green, and even then only after a countdown that any intervention stops. In daily use that is more the exception: usually one light is yellow. Then the tandem instructor takes a look, confirms with YES or first drags the marker into place.

Evaluation from September 2026. It is based on around 1,900 manually set markers from our own jumps (968 exits, about 540 openings, about 400 landings). Part of these were never used for training, only for measuring. The AI markers have been in daily use since September 2026.

The check

The check fits on one screen.

After the analysis the station shows what it has found: one loop each around freefall start, freefall end and landing, in slow motion at the marker. The tandem instructor takes a look, confirms or drags a marker into place. Guest and tandem instructor stay at the top of the screen the whole time.

Simplified view with sample data

1

Three loops

One each around freefall start, freefall end and landing. They run continuously, slowed down at the marker. A click pauses one window and jumps to the marker; the others keep running.

2

Traffic light per marker

Green means "Looks good": confidence score of 0.75 or higher and no warning. Otherwise it says "Check", yellow or red.

3

Move a marker

Drag the marker on the timeline or move it frame by frame with the arrow keys. At the edge, the excerpt grows with it.

4

Start

If a traffic light is not green, the station asks again after clicking GO: "Markers correct? YES". If all are green, a countdown runs. Any intervention stops it; the edit then starts only via GO.

Starting in 30 s▶ Now

5

Scenes

The bar shows the division into six scenes, clip by clip. A scene can be changed or hidden, undo included. The classic timeline view remains available at any time.

New · in trial

The film is already being made during the check

While the tandem instructor is looking, the station pre-renders in the background using the markers it found. If he confirms without changes, it uses the finished parts. If he changes something, the pre-render starts over.

Built in since September, not yet tested in jump operations.

What the station produces

One jump, four versions.

From the handcam footage, the station creates the film, best-of, portrait reel and photo selection, processed on the Mac at your dropzone. Whether the guest has booked video, photos or both, the station knows from the manifest.

Main video · Full HD

Main video with musical dramaturgy

Intro, the scenes in their order, outro. Song 1 carries the beginning. Song 2 starts before the exit; its climax lands exactly on the exit. Around the canopy opening only the original audio plays, then song 3 carries through to the outro. Music and original audio are leveled per scene. With a handcam, the video is created in Full HD, as H.264 at 10 Mbit/s.

You choose the songs, intro and outro.

Reel · 9:16

Portrait reel

A short portrait reel at 1080 × 1920, target length 30 seconds (adjustable). It begins with the exit, slightly slowed forwards and then fast backwards, followed by the best moments. The framing is aligned to the guest's face per scene. With its own music, ready for Instagram and TikTok.

Best-of

Around 60 seconds with the best moments per scene, selected by faces and smiles. Exit and canopy opening are always included, plus song 2 with beat drop.

Photo selection

The station samples the handcam's 4K raw video at 4 frames per second, discards blurry ones and rates the rest. The result is 200 photos plus an exit series of 20 frames. The 20 best go into the gallery.

For post-sale

Whatever is not booked is available as a preview.

If the guest has not booked video or photos, that part is additionally created with a watermark: the logo tiled diagonally across the whole image. This way the guest sees their real jump. If they buy later, the system unlocks the full version.

This is how the Media sales

Simplified view with sample data

Right after the edit

The guest sees their jump while they are still excited.

After the edit, playback starts at the station by itself. Whatever the guest has not booked is finished first, with a watermark. That is the moment for adding on at the desk.

  • Three milestones. New · in trial The station shows when the video is playable, when the photos are finished and when the next GoPro is up. It estimates the remaining time from its own recent runs.
  • One playback window New · in trial for video, best-of, reel and photos, with the status of each version. If nothing is booked, it moves on from the video to the photos by itself.
  • At the desk in parallel: On the media station's iPad, the guest sees their media straight from the editing station. A button registers the wish to add on; payment is taken at the desk.

Simplified view with sample data

Milestones and playback window have been built in since September and are not yet tested in jump operations.

Data safety

The camera is only emptied once the copy is verifiably correct.

Every copy is verified: from the camera to the Mac and from the Mac to the NAS. Only what is verifiably backed up is deleted.

Simplified view with sample data

  • When loading from the GoPro every file is checked for complete size and reloaded up to three times on errors. If a clip is still missing after that, the import aborts and everything remains on the camera.
  • With SD cards an MD5 checksum is created while copying, and the copy is then verified against it. By default the card is afterwards only renamed, not erased.
  • To the NAS goes the entire project folder, again with checksum. Only then does it count as backed up. New · in trial The backup runs in the background; the station is free again right away. An error stays shown in red, and one click repeats the backup.
  • Disk housekeeping keeps the Mac below an adjustable fill level. It only deletes projects that are verifiably backed up, the oldest first, and never raw videos or photos from the same day.

Processed locally

Analysis and editing run on the Mac at your dropzone. The raw videos do not need to go to the internet first.

Corrections in the log

With every edit, the station records which markers were corrected and how it was started. This allows the automation to be measured against real operating data.

Outside camera is left untouched

The station never erases the card or GoPro of an outside camera flyer. Their footage is only read and backed up.

What you need

One Mac mini per station, your GoPros and a NAS.

We tell you in advance exactly what works and what does not. The station has been tested on the Mac mini M4 with GoPro cameras.

Mac mini

One Mac mini per station, tested with M4. The station uses macOS components for video encoding, camera connection and image analysis. Where it was developed, three stations run in daily use.

GoPro

Your tandem instructors' cameras. They connect to the station via USB cable or SD card, including the HERO 11 to 13, which do not show up as a drive. The AI markers need the GoPro's motion data. For photos from the video, the handcam films in 4K.

NAS and internet

A NAS on the local network backs up the projects and uploads the media for the guests to cloud storage. This requires internet at the dropzone.

Manifest system

The counterpart: this is where the day list, load, tandem instructor and booked package come from, and where the station reports its status. The manifest sends the link to the guest. To the manifest system

From you: music, intro, outro, logo

You supply the songs for the main video and reel, your intro and outro, and the logo for the watermark. We do not provide music.

Set up for your dropzone

The station is not a device you unpack and start using. It is configured for your dropzone: station names, NAS and the connection to your manifest. It does not run on Windows.

Frequently asked questions

What operators want to know about the station

What happens if the AI gets it wrong?

If the AI is uncertain, the traffic light shows yellow or red and the station does not start by itself. But green is not a guarantee. That is why even with three green lights a 30 second countdown runs first. Any intervention stops it; the edit then starts only via GO. The tandem instructor drags the marker into place or moves it frame by frame with the arrow keys. Anyone who prefers working in the familiar timeline switches to the classic view.

Does it work with any camera?

Importing, yes: the station also reads SD cards from other cameras, and photos including RAW and HEIC are backed up too. The AI markers, however, need the motion data of a GoPro. Without it, the operator sets the markers by hand.

How long does an edit take?

That depends on the length of the clips and on the station, so we do not quote a fixed time. Newly built in and still in trial is a display at the station: it estimates when the video is playable, when the photos are finished and when the next GoPro is up. The estimate is based on the station's recent runs.

What about an outside camera or a separate photo camera?

Both are built in. With "OUT video to follow", the import waits for the outside camera flyer's camera; its scenes go into the main video, and additional photos are created from the outside perspective. A separate photo card is assigned by the station to the same guest, and the best images are selected from it. Where the software was developed, the case with one handcam is what mostly runs day to day.

How many stations does a dropzone need?

That depends on how many tandems jump per load. A station edits one guest after another, and while an edit is running it does not accept a new camera. Each station continuously reports its status to the manifest; in the admin you can see which station is online and what it is currently working on. Where the software was developed, three Mac mini stations run in daily use.

What music plays in the videos?

Yours. You store the songs for the main video and reel as well as the intro and outro. We do not provide music; you clear the rights to the songs yourself.

Try it yourself

See what the station reports to the manifest.

In your own demo with the fictional dropzone "Skydive Nordlicht", you land a load and watch the editing station report import, edit and done. The station is simulated in the demo. Then you open a guest's media page, with watermark and post-sale purchase. Questions about the station itself we answer in a conversation.

Illustration: Laptop mit Übersicht, im Fenster ein kleiner Flugplatz an der Küste
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