AI Video Translate Agent: Localize Videos Fast

The best choice depends on what you publish. Look for subtitles and voice-over from one upload, an editor to check lines against the picture, support for every language you need, and a way to add human review.

Smartcat fits teams that translate video regularly and want terminology kept consistent through a shared glossary and translation memory.

Smartcat has no free-forever plan, but the trial is free: 15,000 Smartwords over 15 days, with no credit card.

That is enough to translate a short video end to end, including subtitles and an AI voice-over, and judge the output on your own content before you buy.

• Upload the video and choose the source language.
• Pick one or more target languages.
• Let Smartcat transcribe, translate and time the subtitles.
• Add an AI voice-over if you need one.
• Review the lines in the Subtitle Editor, then export the video or the subtitle file.

In 2026, 92% of words translated by Smartcat AI for paying customers were accepted without a single human edit.

Accuracy still depends on audio quality, accents and specialist terms. For regulated or brand-critical video, add a Marketplace reviewer before you publish.

Yes. Select every target language when you create the project. Smartcat produces subtitles, and a voice-over if you want one, for each language in parallel.

Your glossary applies to all of them, so product names and key terms stay identical across versions.

Smartcat is SOC 2 Type II compliant. Files are encrypted in transit and at rest, and role-based access controls who can open each project.

On written request, Smartcat deletes or returns your uploaded content within 30 days, so unreleased product or training videos do not stay on the platform longer than you need.

The main alternatives are a subtitling or dubbing agency, or freelance translators working from a transcript. Both add hand-offs and take longer per language.

Human-only production is still the better fit for lip-synced film dubbing and broadcast work. Smartcat lets you mix both: AI first, then a professional reviewer.

Yes. Upload your video file to Smartcat and choose the target languages. Then download the video with burned-in subtitles or with the AI voice-over, and publish it to your YouTube channel.

For channels in several languages, translate every version from one project so titles and terms stay consistent.

Yes. Multi-speaker detection separates voices during transcription, so captions break where speakers change instead of running two people together.

Check the speaker turns in the Subtitle Editor for interviews, webinars or panels where people talk over each other, and correct any line that lands on the wrong voice.

Yes. The Subtitle Editor shows each translated line next to the playing video. You can change wording, split or merge lines and adjust timing.

Colleagues and outside reviewers can work in the same project at the same time, so feedback lands directly on the line it refers to.

Subtitles show the translation as on-screen text and keep the original audio. A voice-over adds a translated narration track.

Dubbing replaces the original speech with a voice in the target language, timed to the scene. Smartcat produces AI subtitles and AI voices from the same transcript.

Common video formats such as MP4 and MOV, audio files such as MP3 and WAV, and subtitle files such as SRT, VTT and ASS.

Smartcat supports 80+ file formats in total. The full list is in the Help Center.

Add a reviewer for anything with legal, medical or safety content, product claims or a strong brand voice.

You can invite your own colleagues, or hire a vetted linguist from the Smartcat Marketplace inside the same project, without a separate vendor contract.