Download for Apple Silicon Macs
Not sure? Click the Apple menu, then About This Mac. If it says Chip: Apple M1 (or M2, M3, M4...), choose Apple Silicon. If it says Processor: Intel, choose Intel. Almost all Macs from 2021 onwards are Apple Silicon.

That's it. The Terminal line below picks the right version for you automatically.
curl -fsSL https://download.mediaondemand.net/encoder/mac/install.sh | bash
Next time, open it from your Applications folder like any other app.
If macOS asks to use the microphone, click OK. If it asks about the keychain, click Always Allow. To update, run the same line again.