Guide / Use case
How to Translate & Dub Video with AI
To take your videos global, AI tools can produce translated subtitles or AI-voice dubbing efficiently. This guide covers the difference between subtitle translation and dubbing, how to choose tools, and the steps — based on public information.
Two approaches: subtitle translation vs dubbing
Localizing video splits into two main options — choose by goal:
- Subtitle translation: keep the original audio, add translated captions. Fast and low-cost.
- AI voice dubbing: replace audio with AI narration in another language. More natural viewing — good for explainers/training.
Use subtitles for social shorts, dubbing for explainers/training — or combine both.
Recommended tools by goal
Multilingual narration from a script
To translate a script and voice it with AI, Fliki and Pictory fit — multilingual text-to-speech with auto captions. See the Fliki tutorial and Pictory tutorial.
Avatars speaking in multiple languages
For explainer/training videos where an AI avatar speaks each language, Synthesia and HeyGen are the go-tos — output the same script per language. See the HeyGen tutorial.
Adding captions/audio to an existing video
To add translated captions or audio to your footage, editor tools like Veed.io and Descript handle auto-captions, translation and audio editing in one place.
Steps to translate & dub
- Prepare the source script/subtitles: accurate source improves translation.
- Pick a tool that supports your languages.
- Translate (subtitles/script): after machine translation, check names and phrasing.
- Dub with AI voice or add captions: pick language and voice, generate.
- Review and export: fix awkward reading/pacing by editing the script.
Tips for a natural result
- Tidy the source: short, clear source translates more reliably
- Always check machine translation: names, numbers, phrasing
- Preview each language before publishing
- Combine subtitles and dubbing to widen reach
Rights & commercial-use notes
For multilingual/commercial use, confirm the plan's commercial terms and the licenses of voices and assets. Recreating someone else's voice needs rights care. See our AI video commercial-use guide.
Summary
For localization: Fliki/Pictory for script-based, Synthesia/HeyGen for avatar explainers, Veed for editing existing video. Validate each language's voice on the free tier first. Compare tools in the comparison ranking.
FAQ
Can AI dub a video into another language?
Multilingual AI tools can translate a script or narration and dub it with AI voice; some support subtitle-only localization. Naturalness varies by tool and language, so preview before publishing.
Subtitles vs dubbing — which is better?
Subtitle translation is fast and low-cost; AI voice dubbing gives a better viewing experience. Use subtitles for social shorts and dubbing for explainers/training — or combine both.
Can I keep the original voice when translating?
Some tools offer AI voices close to the speaker's timbre. Recreating someone else's voice raises rights concerns, so for commercial use, stick to the provided voices within the terms.
Can I localize for free?
Many tools offer a free plan or trial, usually limiting languages or export time. Validate quality for free, then upgrade when you publish.