How AutoCast clones your voice from your own microphone recording, how to improve pronunciation with a dedicated voice sample, and the only-your-own-voice policy.
Updated 2026-07-23 · AutoCast v3.0 · macOS 14+
Who this is for
Anyone dubbing a video for the first time and wondering where the cloned voice comes from, or anyone whose dubbed audio doesn’t sound quite right and wants to improve pronunciation.
How voice cloning works
AutoCast clones your voice from your own microphone recording — the mic audio captured during a normal screen recording is enough for AutoCast’s voice engine to generate a dub in your voice. You can only clone your own voice; this is an explicit policy, not just a technical limitation, so there’s no option to upload someone else’s audio or clone a voice you don’t own.
Steps: dub using your recording’s mic audio
Record normally with your microphone on. Your mic track becomes the source for voice cloning — no separate setup required.
Open Dubbing Review and pick a target language.
AutoCast clones your voice from that recording and generates a dub, line by line, timed to your clicks and zooms rather than just dropped in sequentially.
Steps: improve pronunciation with a dedicated voice sample
Open the voice sample recorder from the dubbing setup screen.
Read the on-screen script aloud for at least 12 seconds, watching the level meter to make sure your mic input is neither too quiet nor clipping.
Save the sample. AutoCast uses it alongside (or instead of) your regular recording’s mic audio to improve pronunciation quality in the cloned voice — this is especially useful when dubbing into English.
Re-run or start a dub as usual; the improved sample feeds the same voice engine.
What you should see
A dubbed track in your own voice, with lines timed to match on-screen clicks and zooms rather than playing back-to-back regardless of pacing.
Common issues or troubleshooting
No cloned voice option available — your recording needs a mic track; recordings made with the microphone off can’t be used to clone a voice. Use Post-record Narration instead: type a script and AutoCast narrates it in your cloned voice, provided you’ve created a voice sample at some point.
Dub doesn’t sound like you — try recording a dedicated voice sample using the on-screen script and level meter; a clean, quiet 12+ second sample generally improves quality more than a noisy full recording.
Pronunciation is off in English specifically — record a dedicated voice sample, which is especially useful for English pronunciation quality.
Trying to get a US/UK/AU accent — accent selection changes wording and spelling choices only (for example, “color” vs “colour”), not how words are actually pronounced. No option changes AutoCast’s actual pronunciation to match a specific accent.
Can’t find an option to clone someone else’s voice — this is intentional. AutoCast only clones your own voice, from your own microphone recording.