AI Video Dubbing,
Entirely Offline

Dub a video into another language with a synthetic voice — 60 voices across 19 languages — running on your own machine. Nothing uploaded, no account, no per-minute billing. One-time $45.

Most AI video dubbing tools are cloud services. You upload your footage to someone else's servers, they bill you monthly or by the minute, and your video sits on infrastructure you do not control. FFmpeg Commander does the same job locally: the voice models download once to your computer and every subsequent dub runs offline, including on a laptop with no internet connection.

Buy FFmpeg Commander — $45 once →

How video dubbing works here

  1. Transcribe or import subtitles. Generate an .SRT from the video's speech, or bring your own subtitle file.
  2. Translate the subtitles into your target language.
  3. Pick a voice and preview it. Hear about five seconds of any of the 60 voices before committing — it streams a short sample rather than downloading the full 63–79 MB model.
  4. Dub. The original speech is muted and replaced with the synthetic voice reading your translated lines, timed so each line lands where the original speaker said it.

Languages you can dub video into

FFmpeg Commander includes 60 synthetic voices covering 19 languages, with 20 English voices alone across a range of accents:

Why offline dubbing matters

Nothing is uploaded. If your footage is a client's product launch, an internal training video, medical or legal material, or anything under an NDA, a cloud dubbing service is a problem you have to get approved. Local processing removes that conversation entirely.

No per-minute meter. Cloud dubbing is usually billed by the minute of output or through a monthly credit allowance. Dub a two-hour recording and you watch the counter. Here the cost of the hundredth video is the same as the first: nothing.

It keeps working. No account to expire, no API key to rotate, no service to shut down or change its pricing. The models are on your disk.

What this replaces

Typical costWhat you'd pay
AI dubbing / voice-over services$29–$99 per month
Human transcription & captioningaround $90 per hour of video
Subscription video suites$276+ per year
FFmpeg Commander$45. Once.

Common questions

Can I dub a video without uploading it anywhere?

Yes — that is the entire point of this feature. Voice models download once, then all dubbing runs locally on your machine. You can disconnect from the internet and it still works.

Do I need an API key or a subscription?

No. There is no account, no API key, and no subscription. FFmpeg Commander is a one-time $45 purchase and the dubbing feature is included.

How do I translate a video into another language?

Transcribe the speech to subtitles, translate the subtitle file, then dub using a voice in the target language. Each step happens inside the app.

Can I just add subtitles instead of dubbing?

Yes. Subtitles, burned-in captions and .SRT export work independently — you do not have to dub to use them.

What platforms does it run on?

Voice dubbing is available on Mac (Apple Silicon), Windows 11 and Linux.

How natural do the voices sound?

They are synthetic voices, not voice clones — clear and understandable rather than indistinguishable from a human actor. The Preview button exists precisely so you can judge that yourself before buying, on the exact voice you would use.

Try it

Not sure about spending $45 on software from a developer you just met? Fair enough. There is a free screen recorder built the same way — entirely local, no account, no cloud. If you like how the free one is built, you know what to expect from the toolbox.

Get FFmpeg Commander — $45 →   See how it works →