Cutcast

Drop in your podcast's camera and mic files. Get back an edited multicam video.

Cutcast lines up every recording by its sound, cuts to whoever is talking, and exports one finished MP4 with every microphone mixed underneath. It runs entirely on your own computer.

Cutcast-promo.mp4

Download

Get the latest version from the Releases page:

File	What it is
Cutcast.Setup.x.y.z.exe	Installer. Adds Start menu and desktop shortcuts, and updates itself when a new version comes out.
Cutcast.x.y.z.exe	Portable. Nothing to install; just run it. It tells you when a new version is out, but you download it yourself.

Windows may show a SmartScreen warning because the app isn't code-signed yet. Click More info → Run anyway.

Features

• Automatic sync. Cameras and mics can start recording at different times; they're lined up by matching their audio, accurate to a fraction of a frame. On long recordings, devices whose clocks run slightly fast or slow are corrected too, so the lips still match at the end. Doubtful matches are flagged so you can check them by ear.
• Cuts to whoever is talking. Each mic is linked to that person's close-up camera. Quiet pickup of one person on another's mic (bleed) is ignored, and mics recorded at different volumes are handled.
• Wide-shot logic. Goes wide when people talk over each other or after a pause, and drops short wide cutaways into long monologues at a natural breath.
• Calm, adjustable pacing. Set the shortest allowed shot, voice sensitivity and wide-shot rules, and watch the cut plan update instantly.
• Preview before you export. The built-in player switches cameras exactly the way the export will.
• Your call wins. Press 1–9 to lock a camera for the current shot and 0 to hand it back.
• Clean sound. Every mic plays the whole time and only the picture changes. Loudness can be evened out to the podcast standard (−16 LUFS).
• Fast, reliable export. Frame-accurate cuts with a progress bar and cancel button, plus NVIDIA, Intel or AMD hardware encoding when your computer supports it.
• Projects and safety nets. .cutcast project files, undo/redo, and automatic autosave that restores your last session.

How to use it

1. Drop in all of an episode's files: every camera video and every microphone recording. To choose what each file is used for, use Add video (only the picture becomes a camera) and Add audio (only the sound becomes mics, even from a video file).
2. Check who's who in Files & sync. Each mic should show the camera that films that person, and your wide camera should be set to Wide shot. A camera with "wide" in its file name, or the third camera, is picked automatically.
3. Press play and watch the cuts. Adjust the style in the Cuts tab, or lock individual shots.
4. Export. Set the start and end with I / O to trim the pre-show chat, choose quality, and export.

Keyboard shortcuts

Keys	Action
Space	Play / pause
← →	Back / forward 1 second (hold Shift for 5)
[ ]	Previous / next cut
1–9	Lock that camera for the current shot
0	Let the app choose again for the current shot
I O	Set export start / end at the playhead
Ctrl+Z / Ctrl+Y	Undo / redo
Ctrl+S	Save project

FAQ

What files does it accept? Video: MP4, MOV, MKV, WebM, M4V, AVI. Audio: WAV, MP3, M4A, AAC, FLAC, OGG, Opus, AIFF.

Do I need separate microphone files? Yes, the sound and the cuts come from the mics. Cameras are picture only: their built-in sound is never heard and only lines the files up. If a camera's sound is all you have, add that file with Add audio too.

My mics are separate audio tracks in one file. That works. Add the file with Add audio: Cutcast asks which tracks are mics, each one you pick becomes its own microphone, and the file's picture is ignored. Then set which camera each mic shows; several mics can share one camera.

Does anything get uploaded? No. All analysis and rendering happens on your computer with a bundled copy of ffmpeg.

What's the ideal setup? One close-up camera and one microphone per person, plus an optional wide camera. Put each mic close to its speaker so the app can clearly tell who is talking.

The preview shows a message instead of video. Some phone footage (HEVC) can't play in the preview. It still exports correctly.

Building from source

Requires Node.js 20 or newer.

npm install
npm run dev        # run with hot reload
npm test           # cut engine and sync tests
npm run dist:win   # build the installer and portable .exe into release/

Folder	Contents
src/shared/	Cut engine, audio sync and shared types
electron/	Main process: media analysis, export pipeline, local media streaming
src/renderer/	React interface: preview, timeline and side panels

License

MIT. The bundled ffmpeg binary is distributed under its own license; see ffmpeg.org/legal.