DOWNLOAD Version 3.3.1
One binary. One kind of Mac.
Cutvey Offload is a native Apple Silicon Mac app: SwiftUI on a pure-Swift engine, with no third-party Swift packages. Everything that moves or verifies footage is written against Apple system frameworks, and the hash implementations are in the tree.
The disk image is not published yet.
The app is at version 3.3.1 and the build is being prepared for distribution. Start a free trial now and the download will be waiting on your account the day it goes up.
Downloading requires signing in with a Cutvey account. The trial is how you get one, and it costs nothing to hold.
Cutvey Offload 3.3.1
Apple Silicon Mac, macOS 14 or later. Sign in with your Cutvey account to download.
Opening it the first time
The app is not yet code-signed or notarized, so macOS Gatekeeper blocks it on first launch. You only need to do this once. After that it launches normally.
- Open the disk image and drag Cutvey Offload to your Applications folder.
- In Applications, right-click (or Control-click) the app and choose Open.
- Choose Open again in the dialog that appears.
Signing and notarizing with an Apple Developer ID remove this step entirely, and doing so is on the list.
01 Requirements
Apple Silicon, macOS 14 or later. That is the whole list.
There is no Intel build and there is no Windows version. That is a decision, not an omission, and it is not going to be revisited quietly at some later date, so it is worth being direct about it here rather than letting you find out after a download.
One architecture means one code path to make fast and one to make correct, and correctness is the entire pitch of this app. A second architecture would be a second set of behaviours to prove, on hardware nobody on this team is shipping on.
| Mac | Apple Silicon. No Intel build. |
| macOS | 14 or later. |
| Windows | Not available, and not planned. |
| Disk image | Roughly 23 MB. |
| Installed | Roughly 53 MB as an .app. |
| Account | A Cutvey account, free trial included. |
Most of that size is the bundled decode payload, and none of it is on the copy or verify path. It exists so camera reports can read and thumbnail footage the system cannot open on its own.
02 What is in the bundle
Only what the app actually calls.
Three third-party payloads ship inside the app so you never have to install an SDK. Everything they are not used for was removed, and that was verified rather than assumed: each component was taken out individually and re-tested against real clips, and the thumbnails hash byte-identical to a full-payload build.
| Component | Why it is there | Size |
|---|---|---|
| ffmpeg + ffprobe | Frame-grabber fallback for containers AVFoundation cannot open, notably Sony XAVC MXF. | ~24 MB |
| RED R3D runtime | .R3D metadata and thumbnails. CPU decode; the GPU and async decoder libraries are not shipped, because the app does not call them. | ~20 MB |
| Blackmagic RAW framework | .braw metadata and thumbnails. Shipped without its Metal, OpenCL and x86-only accelerators. | ~4 MB |
Leaving out what is not called saves roughly 31 MB. See the third-party notices for licences, ownership and the FFmpeg source offer.
One thing to know about unsigned builds and S3
S3 secret access keys are stored in the macOS login Keychain, and the Keychain decides access based on the requesting app's code signature. An unsigned build has no stable signature, so macOS treats each rebuild as a different app and will not return a secret saved by a previous one. In practice, a stored S3 secret does not survive an app update and has to be re-entered. A signed build with a stable identity fixes this, because the access control is then tied to the Developer ID signature.
Why the app is not sandboxed
By design. It needs unrestricted disk access to read any mounted card and write offloads wherever you point them, it spawns a shell to run the event scripts you write, it opens connections to arbitrary S3 endpoints, and it stores secrets in the login Keychain. A sandboxed build would break all four. It is distributed outside the Mac App Store, so sandboxing is not required, and it still ships with the hardened runtime ready for notarization.
Get the account now, the app when it lands.
The trial gives you the Cutvey account the download is tied to, and it costs nothing to sit on until the build is up.