By the end of this guide you will have a version of your video in another language, with translated speech in a voice that fits, optionally with lip movements adjusted to match, and with the text checked by someone who speaks the language. To dub a video into another language with AI you use a dubbing platform: it transcribes the original speech, translates it, generates the new voice and puts it back on the video.
AI dubbing is fast, but the quality depends on the translation and the voice, and both need a human check. This guide compares seven tools from our Video category and walks through the steps, including the consent rules that apply when a voice is cloned.
Key takeaways
- Upload the video, choose the target language, review the translated script, pick or clone a voice, generate the dub, then check it with a native speaker before you publish.
- The main decision is how far you want to go: audio dubbing only, voice cloning, or lip sync that matches the mouth to the new words, all of which are priced differently.
- Free access is small: a 3-minute trial on Rask AI, 2 minutes with lip sync on CHAMELAION, and a free plan on HeyGen with watermarked videos.
- Clone only a voice you have permission to use, and have a fluent speaker review the translation, especially for legal, medical or marketing claims.
What you need before you start
- The video. The finished edit with clear speech and little background noise. If the music and voice are on separate tracks, keep them.
- A target language list. Start with one language to test the workflow.
- A reviewer. Someone fluent in the target language who can read the script and listen to the dub.
- An account. Most tools have a free plan or trial.
- Time. Under an hour for a short video and one language, plus review time.
- Difficulty. Easy to moderate.
- Consent. If the tool clones the speaker's voice, the speaker must agree.
Which kind of AI tool fits this job
Pick by how polished the dub needs to be.
Dubbing platforms with voice cloning and an editor. Rask AI transcribes a video, translates it and produces a dub in the speaker's own cloned voice, with a line-by-line editor for the transcript and timing. Perso Dubbing translates the speech, clones the original speaker's voice, can match the lips to the new audio, and has a script editor and custom glossary. Dubverse dubs with AI voices, writes subtitles and shows the projected cost before a project starts.
Lip sync specialists. LipDub AI takes an existing video and delivers it in other languages with the speaker's voice cloned and the mouth movements matched, and works best on talking-head footage. CHAMELAION transcribes, translates, voices each speaker, keeps the background audio and regenerates lip movements, with a web Dubbing Studio and an API.
An avatar and video platform with translation. HeyGen translates and localizes video into 175+ languages and dialects and offers voice cloning, alongside its avatar tools.
A voice platform with dubbing. ElevenLabs is an AI audio platform that lists a Dubbing Studio and automatic dubbing with speaker detection, plus voice cloning and speech-to-text. It suits audio-led projects.
Step 1: Prepare the source video
A clean source gives a better dub.
- Export the final video with clear speech.
- If you can, export the dialogue and the music as separate tracks. Some tools keep background audio, but clean stems are easier to work with.
- Remove on-screen text you cannot replace, or plan to re-edit it for the new language.
- Note the speakers and the names and terms that must not be translated.
Check it worked by listening to the first minute and understanding every word.
Step 2: Choose a tool and check its limits
Match the tool to the length of your video and the level of polish you need.
- Decide whether you need cloned voices, lip sync, or only translated audio.
- Check length limits. LipDub AI's Core plan limits videos to 10 minutes at 1080p, and Perso Dubbing lists maximum video lengths of 3 minutes on Starter, 15 on Creator and 30 on PRO.
- Check the language list covers your target market.
- Compare pricing models in the table. Several tools bill by the minute, and Rask AI charges 3 extra minutes per minute of video for lip-sync.
Check it worked by calculating the cost for your video and language count.
Step 3: Upload the video and choose languages
Set up the project.
- Upload the file or paste a link, depending on what the tool accepts.
- Choose the original language, or let the tool detect it.
- Choose one target language to start. CHAMELAION's API accepts up to 10 target languages per request, but test one first.
- For videos with more than one voice, check that each speaker is detected. ElevenLabs lists automatic speaker detection, and CHAMELAION lists active speaker detection.
Check it worked by seeing a transcript with the right speakers appear.
Step 4: Review and edit the translated script
This is where most quality problems are fixed.
- Read the transcript against the audio and fix recognition errors.
- Read the translation, ideally with your fluent reviewer.
- Add terms to a glossary or dictionary if the tool has one. Perso Dubbing has a custom glossary, and Rask AI lists a translation dictionary and brand glossary on higher plans.
- Shorten lines that run too long for the original timing.
Check it worked by having your reviewer approve the script.
Step 5: Choose or clone the voice
The voice carries the speaker's identity.
- Pick a stock voice, or clone the original speaker's voice where the tool offers it.
- Get the speaker's permission before cloning, and treat that as a rule whatever the tool's terms say.
- Assign voices per speaker in multi-person videos.
- Listen to a short sample before generating the whole video.
Check it worked by hearing a sample that sounds natural and fits the speaker.
Step 6: Generate the dub and add lip sync if needed
Generate the full version once the script and voice are right.
- Run the dub. Re-dubbing after edits is free on Rask AI, according to its listing, but check your tool's rules.
- Add lip sync if you want the mouth to match the new language, accepting the extra cost or credits.
- Keep or lower the background audio so speech stays clear.
- Generate subtitles in the new language as a fallback. Several tools export SRT files.
Check it worked by watching the whole dubbed video once, with the sound on.
Step 7: Review with a native speaker and export
Do not publish until a fluent person has watched the final video.
- Ask the reviewer to check meaning, tone, names and numbers, and the timing of the speech against the picture.
- Fix lines in the editor and regenerate only the changed parts where possible.
- Export the video, and the audio and SRT files if you need them.
- Label the video as dubbed with AI where your audience would expect to know.
Check it worked by receiving written approval from the reviewer.
Tools for this job compared
| Tool | Good fit for | Pricing | Stated limits |
|---|---|---|---|
| HeyGen | Translating video as part of avatar and marketing work | Freemium, paid from $29/mo (checked 24 Oct 2026) | Free plan allows 3 watermarked videos a month, up to 1 minute each; credits are spent on translation |
| ElevenLabs | Audio-led dubbing with voice cloning and speech-to-text | Freemium, paid from $6/mo (checked 24 Oct 2026) | Free plan has 10,000 credits per month with no rollover; all creative products share one credit pool |
| Rask AI | Dubbing with cloned voices and a line-by-line editor | Freemium, paid from $39/mo (checked 24 Oct 2026) | Free trial includes 3 minutes; lip-sync charged at 3 extra minutes per minute; API starts on Creator Pro |
| Perso Dubbing | Dubbing with script editing, glossary and lip matching | Freemium, paid from $6.99/mo (checked 24 Oct 2026) | Free plan includes one free generation; maximum video length is 3 minutes on Starter |
| LipDub AI | Lip-synced localization of talking-head video | Paid, from $29/mo (checked 24 Oct 2026) | Core limited to 10 minutes at 1080p; API access starts on Scale; unused balances not refunded |
| CHAMELAION | Translation with lip sync, in a studio or via API | Freemium, paid from €5/mo (checked 24 Oct 2026) | Free plan covers 2 minutes with lip sync; prices exclude VAT; API upload limit of 2 GiB per video |
| Dubverse | Credit-priced dubbing, subtitles and text to speech | Free trial, paid from $9/mo (checked 24 Oct 2026) | Pro handles videos under 60 minutes and Supreme under 150 minutes; extra credits do not extend validity |
Prices and plan limits change, so confirm the current terms on each vendor's site before you subscribe.
Common mistakes to avoid
- Publishing without a native review. Machine translation can be literally correct and still sound wrong, or misstate a claim. Fix it by having a fluent speaker approve the script and the final audio.
- Cloning a voice without permission. A cloned voice is a person's identity. Fix it by getting the speaker's consent in writing and by using a stock voice if you cannot.
- Starting with the longest video. Plan limits and per-minute costs add up quickly. Fix it by testing a short clip in one language first.
- Ignoring timing. Some languages need more words than others, so dubbed speech can run long. Fix it by shortening lines in the script editor.
- Forgetting terminology. Brand names and technical terms get translated when they should not. Fix it by using a glossary or dictionary where the tool offers one.
How we put this together
This is an evidence-based guide built from each tool's listing in our directory, which is compiled from the vendor's own site and pricing page. It is not a review based on using the tools. We don't rank tools, and nobody paid to be included. Some outbound links may be affiliate links; see our disclosure.
Frequently asked questions
Is there a free way to dub a video with AI?
Only in small amounts. Rask AI's free trial includes 3 minutes without a credit card, CHAMELAION's free plan covers 2 minutes with lip sync, ElevenLabs has a Free plan with 10,000 credits, and HeyGen's Free plan allows 3 watermarked videos a month.
How accurate is AI dubbing?
It gives a fast first version, but translation, tone and timing can be off. Have a fluent speaker review the script and the final audio, and be extra careful with legal, medical or safety content.
Can AI keep the original speaker's voice?
Some tools clone it. Rask AI lists voice cloning in 32 languages, Perso Dubbing clones the original speaker's voice, and LipDub AI offers instant voice cloning. Always get the speaker's permission first.
Can the lips match the new language?
Some tools do lip sync. LipDub AI and CHAMELAION match mouth movements to the new audio, Perso Dubbing offers lip dubbing, and Rask AI lists lip-sync for videos with several speakers. Lip sync usually costs extra.
How long does it take to dub a video?
The vendors do not publish standard processing times. As a rough editorial estimate, a short video and one language fit in under an hour including script review. Native-speaker review takes additional time.
Compare more options in our Video category.
