Studio-quality voiceover, generated directly from your captions. No studio required.
Generate, edit and publish AI voiceover directly from captions — with voice cloning, multi-speaker assignment, and pronunciation control. Context-aware editing is guided by your original audio waveform. Powered by market-leading voice technology such as Amazon Polly, ElevenLabs and Azure (beta). Publish audio tracks straight to Brightcove and Mux.
Polly + ElevenLabs + Azure (beta)Voice cloningAI-voiceoverVoice editing suite
No context-switching — generate, edit and publish without leaving CaptionHub
Per-speaker voices
Assign a unique voice to every speaker for natural, authentic-sounding output
Publish to the player
Push voice tracks to Brightcove and Mux — and any player that supports multi-audio
Voice cloning
Easily clone voices from existing content — familiar voices, zero recording sessions
Section 01
Who it's for
Voiceover
We built Voiceover for media teams and localisation managers who need to scale across languages without the cost, delay, or complexity of traditional voice production.
Built for you
Localisation managers scaling voiceover across multiple languages simultaneously
Content teams who want to preserve a speaker’s voice identity across translated versions
Media and streaming teams who need consistent, professional audio quality without managing external recording studios
Sports and entertainment rights holders building multilingual audio catalogues across on-demand libraries
Gaming studios dubbing cutscenes, character dialogue and game trailers into multiple languages — without the cost and lead times of traditional voice recording
The problems you experience, we solve
Professional voice actors costing £5K–£20K per video per language, with weeks of turnaround
TTS that sounds robotic and undermines brand quality on professional content
No way to approximate the original speaker’s voice in translated audio
External voiceover tools disconnected from your captions — double-handling every change
Synthetic tracks with no clear versioning or removal process post-publish
Limited control over AI-generated voiceovers — making it difficult to fine-tune pronunciation, pacing, timing, and delivery
Section 02
At a glance
TTS providers
Polly · ElevenLabs · Azure (beta)
Choose from leading TTS providers and your personal voice library
Voice cloning
Clone from existing video
Create a voice profile from content already in CaptionHub
Voice dictionaries
Custom pronunciation control
Build team dictionaries for names, terminology and brand language
Multi-speaker
A voice for every speaker
Assign distinct voices across multi-speaker content
Editing
Fine-tune every voiceover
Adjust timing, pauses and delivery against the original audio waveform
Publishing
Publish directly to your platform
Send audio tracks straight to Brightcove and Mux
Render
Burn in or export
Render finished content or export for use across other platforms
Plan
Pro · Enterprise
Voiceover generation uses minutes from your plan
Section 03
Features
01Capabilities10 capabilities
Create synthetic voiceovers from existing captions inside CaptionHub
Assign different voices to different speakers
Edit script/text, timing and pauses using waveform and original audio as a guide
Adjust audio track volumes during editing
Voice dictionaries: customise pronunciation per team
Voice cloning: use existing video content to create more realistic voices
Add ElevenLabs voices to your team voice library
Publish synthetic audio tracks directly to Brightcove and Mux
Render voiceover into video and export for other platforms
Powered by Amazon Polly, ElevenLabs and Azure (beta)
Section 04
Integrations & platforms
TTS providers · 3
Amazon Polly
ElevenLabs
Azure (beta)
Publishing · 2
Brightcove (audio track)
Mux (audio track)
Voices · 2
Voice cloning from video content
ElevenLabs custom voices via Voice Library
Section 05
Languages
Explore CaptionHub's language and locale coverage across transcription, translation, voiceover and live captioning. Capabilities vary by language.
For the most up-to-date language and feature availability, explore our Supported Languages page.
Section 06
Pricing & plan requirements
Plan requirements
All plans
Voiceover generation and editing is available across plans, with usage calculated from output minutes.
Next steps
Talk to us about Voiceover.
Send us your use case - live event, archive automation, vendor routing - and we will walk you through the relevant configuration, plan and deployment options.