AI Voice Over Translation: Human-Sounding Videos In Minutes

Voice-over translation replaces the original spoken audio in a video with a translated version in another language. Instead of recreating scenes or recording new dialogue manually, Smartcat uses AI agents to transcribe, translate, and generate natural-sounding audio that fits the flow and timing of your video—making it accessible to more audiences without extra production work.

AI voice-over uses artificial intelligence to generate human-like audio for videos, training content, explainers, and more.
In Smartcat, AI agents handle this end-to-end: they transcribe your video, translate the script, apply your brand’s terminology, and generate a natural voice reading your content in the target language. Everything is handled in one workflow—no manual syncing or exporting between tools.

Smartcat’s AI agents help teams deliver multilingual video content faster and more consistently. Key benefits include:

Accessibility & reach
Make training and marketing content instantly available in 280+ languages so every employee or customer can understand it.

Cultural relevance
AI agents adapt tone and terminology to each audience, improving clarity and local resonance.

Lower cost
Avoid expensive studio sessions, vendor coordination, and manual edits.

Speed
Videos can be fully transcribed, translated, voiced, and subtitled in minutes—not days or weeks.

Consistency
Your brand’s terminology, voice, and compliance rules are applied automatically across every version.

Smartcat uses a coordinated multi-agent workflow:

1. Transcription agent extracts the spoken content from your video.

2. Translation agent translates the script using your brand glossary, translation memory, and content history.

3. Quality agent checks terminology, consistency, and clarity.

4. Voice agent generates natural audio in your selected voice.

5. Sync agent aligns the audio to the timing of your video and applies subtitles if needed.

This creates a single, streamlined process where agents support each other—reducing manual work for your team.

Not fully. AI agents excel at high-volume, repeatable, or fast-turnaround content—training modules, product explainers, internal communications, and localized marketing videos.
For emotionally complex creative work, human voice actors still play an important role.

Smartcat’s positioning: AI agents complement your teams; they don’t replace them—their goal is to free people from repetitive production tasks so humans can focus on strategy and creativity.

Smartcat supports 280+ languages, including major global languages and highly specific regional variants. This ensures Marketing and L&D teams can deliver consistent, local-ready content anywhere in the world.

Smartcat supports the following file types for AI video translation:

• mp4

• mpeg

• avi

• mov

• 3gp

• 3g2

• flv

• m2v

• m4v

• mkv

• mpg

• ogv

• qt

• ts

• vob

• wmv

Yes, you can use AI Voice Over on YouTube. After generating the AI Voice Over on Smartcat, you can save the resulting audio as an audio file (e.g., MP3 or WAV). Then, you can add the AI-generated audio to your video using video editing software before uploading it to YouTube.

To add online voice over translation to your TikTok videos, use Smartcat AI to generate your AI voice over in your preferred male or female voice, get the audio file (e.g., MP3 or WAV), combine your TikTok video with the AI-generated audio, and upload to TikTok. This is an effective way to get high-quality TIkTok videos that saves time and resources.

Remember to comply with TikTok's community guidelines and any copyright or usage restrictions related to the AI voice over content.

Automatically translating a video voice over with Smartcat is a seamless process. Start by uploading your video file to Smartcat, where the audio is transcribed into text automatically, in seconds.

This transcript is then translated into your target language using Smartcat’s AI translation engine, with high-quality results. You can review and edit the translation before proceeding to refine it to your liking.

Smartcat then generates a new voice over in your target language(s), and synchronizes with video timing. The entire process is streamlined and centralized end to end, saving you time and ensuring consistency across your video translation projects.

AI voice translation combines advanced speech recognition, automatic translation, and text-to-speech technologies in Smartcat's end-to-end video translation platform for enterprise teams.

Smartcat AI converts your video's original spoken language into text via automatic transcription. Smartcat then translate it using automatic translation, which leverages AI to produce accurate and contextually appropriate translations.

The platform then translates text into natural-sounding AI-generated speech, providing enterprise-quality results. Choose from a wide range of female and male AI voice overs to resonate with your global audiences in any language.

Teams choose Smartcat because it delivers:

• Speed: Produce multilingual videos in minutes, even at scale.

• Quality: Brand terminology, tone, and compliance rules applied automatically.

• Consistency: AI agents learn from your edits and improve with every project.

• Cost control: Reduce spend on vendors and manual production.

• Team collaboration: Built-in editing, QA, and timing tools keep Marketing and L&D aligned.

• One system of record: Scripts, translations, voice tracks, and subtitles stay centralized.

This gives global teams the ability to launch training and campaign content everywhere at once—and deliver the same quality in every market.