Live · with ATEM
After a live show
Open the OnAirCut session: the cuts it made live become a multicam session for your editor, so post-production doesn’t start from zero.
OnAirCut session Podcast Editor Your editor
Automate live switching and editing
Your podcast switches itself.
OnAirCut listens to every mic and cuts your ATEM to whoever is talking, live. When the show ends, the multicam edit is ready for Final Cut, Premiere or DaVinci.
Recorded without streaming, or without an ATEM? The Podcast Editor builds that same multicam edit from each person’s audio and each camera’s video. See how
macOS 14 or later · Apple silicon
- OnAirCut at the switcher: you focus on the conversation
- AUTO
- OnAirCut at the switcher: you focus on the conversation
- cameras — every input of your ATEM
- 20
- cameras — every input of your ATEM
- editors: Final Cut, Premiere, DaVinci
- 3
- editors: Final Cut, Premiere, DaVinci
What it does
Two apps in one, for Mac.
LIVE
Live Switcher
Automatic switcher for ATEM
Changes the ATEM's cameras to whoever is talking while you record or stream, so you can focus on the conversation. Connects to the ATEM and to your audio console.
- Reads every mic on its own from a multichannel USB console
- Cuts to a shared or wide shot when several people talk at once
- A short “uh-huh” doesn’t steal the shot
- Keeps measuring each voice and adjusts if someone talks louder or softer
- Keys 1–9 cut by hand, and it gives you the floor for a few seconds
- A recording clock on a TV for your guests: countdown, time of day and your logo
Podcast Editor
Automatic multicam editing
Builds the multicam edit of a recording for Final Cut, Premiere or DaVinci, without cutting by hand: from an OnAirCut session, or by dragging in your raw audio and video. Doesn’t use the ATEM.
- Hears the whole conversation before deciding each cut
- Syncs each camera by timecode or by sound, drift included
- Exports a multicam clip, separate clips or a cut list
- Every export goes to its own folder, never over another
What you’re looking at
Automatic switcher for ATEM
- 1 Who is talking The meter bridge: one meter per mic, with a white light on whoever has the floor.
- 2 What’s on air One monitor per camera, like the ATEM’s multiview: red border on air.
- 3 The program The ATEM’s output, live over USB-C — what your audience is seeing.
- 4 Why it cut The last cut and its reason, readable at a glance.
- 5 The last 60 seconds Who spoke and which camera was on air: every cut, explained.
- 6 Every cut The log: automatic cuts, yours and the ATEM’s.
How the live switching works
Set it up once. Then press ▶.
-
1Connect
The ATEM by USB or Ethernet — OnAirCut finds it on its own — and your multichannel USB console, one person per channel.
-
2Analyze
A short assistant: which mic is whose, which camera shows whom, the room’s noise, and how much of each voice leaks into the other mics.
-
3Press ▶
AUTO cuts to the tightest camera that shows whoever has the floor. ● REC records a WAV per mic and every cut, for the edit later.
How it decides
It cuts like an operator who knows the show.
One person talks
The tightest camera they appear on, about half a second after they start.
Both talk at once
After a moment together it goes to the shot that shows them both — here, the wide.
A short “uh-huh”
A quick reply doesn’t take the shot from whoever has the floor.
Nobody talks
After the seconds you choose, it stays, goes wide or goes to a camera you pick.
You cut by hand
Keys 1–9 or a click: it respects your cut for a few seconds, then carries on.
Voices leak
The other mic hears César too, but it knows that’s bleed, not Miguel talking.
For your guests
A clock everyone can see.
Put the recorded time on a TV in the studio: your guests know when they’re on, how long they’ve been talking and what time it is.
When does it start?
Automatically, when you record or When you decide · ⌘T
Automatically, when recording starts: with ▶, since Always REC comes on, or with ● REC if you turn it off. The sound check before doesn’t count. Or you decide when the episode begins, with one key.
How does it start counting?
Right away or With a countdown
From 00:00:00 at once, or first a countdown — “STARTS IN”, the minutes you choose, then “ON AIR!” — so your guests can get ready. Recording starts at zero, or with the countdown if you prefer.
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In step with the operator
The app’s clock, next to ● REC, shows the same countdown and the same “ON AIR!”, even if you can’t see the TV.
-
The time of day
For a studio rented by the hour: the Mac’s time, in 12 or 24 hours, at the bottom of the screen.
-
Your logo and colors
Your show’s logo and colors, HH:MM:SS or timecode, and a red frame while recording, like a tally light.
Podcast Editor
The edit is waiting for you in your editor.
Open an OnAirCut session or drop each person’s audio, then each camera’s video, and choose your editor. OnAirCut hears the whole recording — not just the last second, like it has to live — and every cut lands right where someone starts talking.
Recorded · no ATEM
With no live show
Recorded without streaming, or without an ATEM? Drag in each person’s audio and each camera’s video: it syncs them and cuts to whoever is talking.
Raw audio + video Podcast Editor Your editor
22 minutes · 65 cuts · calculated on their own
- Steps: audio, video, cuts, export
- 4
- Steps: audio, video, cuts, export
- Faster than real time
- 50×
- Faster than real time
- To recalculate after a change
- < 1 s
- To recalculate after a change
Exports to
- Final Cut Pro
- Premiere Pro
- DaVinci Resolve
- EDL and CSV cut list
Built for the room it runs in
Never slows the show
No App Nap, the Mac doesn’t sleep, and the network runs on its own thread.
Reconnects by itself
If the ATEM or the console drops, it finds them again.
Sessions are crash-safe
Saved every five seconds: a power cut leaves the session whole up to that moment.
Errors that explain themselves
Every error says what happened, why, whose side it’s on and what to do.
Everything it does
At a glance.
- cameras — every ATEM input, on any model of the family
- 20
- cameras — every ATEM input, on any model of the family
- the mics your USB console sends, each read on its own
- All
- the mics your USB console sends, each read on its own
- OnAirCut at the switcher: run the show on your own, or alongside your operator
- AUTO
- OnAirCut at the switcher: run the show on your own, or alongside your operator
- editors: Final Cut Pro, Premiere Pro, DaVinci Resolve
- 3
- editors: Final Cut Pro, Premiere Pro, DaVinci Resolve
- to sync each camera, by timecode or by sound
- < 1 ms
- to sync each camera, by timecode or by sound
- WAV per mic, saved every 5 seconds
- 24-bit
- WAV per mic, saved every 5 seconds
- Macs per licence, 10 changes every 30 days
- 2
- Macs per licence, 10 changes every 30 days
- English and Spanish
- EN · ES
- English and Spanish
From the blog
Guides, step by step.
Live switching
How to switch an ATEM automatically by who is talking
Switch an ATEM’s cameras to whoever is talking, live, from each mic of a multichannel USB console. Step by step with OnAirCut, from the cables to the first show.
Read →
Editing
Automatic multicam editing for video podcasts
Build a video podcast’s multicam edit automatically from each person’s audio, for Final Cut Pro, Premiere Pro or DaVinci Resolve. No ATEM needed. Four steps.
Read →
Live switching
A camera plan for a video podcast
How many cameras a video podcast needs, what each should show and how to frame them, for two or three people — and how OnAirCut uses each one.
Read →Questions
Before you download.
Does it work without an ATEM? +
Yes. OnAirCut is two apps in one, and the Podcast Editor doesn’t need an ATEM: it builds the multicam edit of any recording from one audio file per person and each camera’s video. Only the Live Switcher, which cuts cameras live, needs an ATEM.
Does it work with my ATEM? +
With the whole family: ATEM Mini, Mini Pro, Mini Extreme, SDI, SDI Extreme ISO and Television Studio, by USB or Ethernet.
Which consoles does it work with? +
Any multichannel USB console that sends one person per channel to the Mac — a Mixcast 4, for example. A console that only sends the stereo mix isn’t enough: it needs each mic on its own.
How does it know which camera shows whom? +
Each person has their own mic on their own console channel, wired or wireless, as you already work. Once, in the assistant, you mark who appears in each camera: a camera can show one person, two, or everyone.
What about 6 cameras and 3 people? +
It works the same: when one person talks, it goes to the tightest camera that shows them; when several talk at once, to the camera that shows all of them. Up to 20 cameras and as many mics as your console sends.
Do I still need someone at the switcher? +
It’s up to you. OnAirCut switches on its own, so you can run the show by yourself and focus on the conversation. If someone is at the switcher, they work together: they can cut by hand at any moment and OnAirCut respects it.
Why a public beta? +
OnAirCut is still being developed, and real podcasts and livestreams are the best test. Until December 31, 2026 anyone can use it while we polish it with what you tell us. From January 1, 2027 it needs a subscription: 19 USD a month or 190 USD a year, with a 7-day free trial.
Pricing
Public beta until December 31, 2026.
It’s still being developed, and your podcast or livestream is the best test: use it and tell us what fails. From January 1, 2027, one plan, two apps in one, on two Macs, with a 7-day trial.
See pricing →Monthly
$19a month
Annual
$190a year
On air
Let the cameras switch themselves.
Spanish and English. Two Macs per licence. Works with the whole ATEM family.
Download for Mac macOS 14 or later · Apple silicon