Real-time media localisation suite
Translation into 200+ languages for live, hybrid and in-room events, and webinars
Real-time accuracy you can trust
Deliver precise live captions for global audiences—powered by adaptive AI.
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Instantly synced, globally delivered
Keep captions perfectly in sync with your live stream — whether for global broadcasts, webinars, or internal events.
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Speak to the world in 200+ languages
Auto-translate live speech into 200+ languages in real time — expand reach and accessibility instantly.
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Seamless workflow integration
Connect easily with your existing broadcast tools, platforms, and streaming setups — removing complication and cost from live production.
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Built for scale, ready for anything
From one-off events to 24/7 channels — scale live captioning with enterprise-grade reliability.
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Full control, even mid-stream
Pause captions for pre-recorded segments, adjust speaker settings on the fly, and manage live output in real time—without disrupting your stream.
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Feature checklist
AI generated subtitles
200+ languages
HLS, RTMP or SRT inputs
Real-time transcription
In-room captions
In-page/webinar transcription
Live transcript widget
Audio event detection
Speaker-based caption splitting
Start/stop stream API
Profanity filtering settings
MUX stream integration
THEOplayer live support
Language-specific audio tracks
Brevity/formality controls
Brightcove support
Built for enterprise scale
Whether you're building your business, expanding internationally, or cutting costs—CaptionHub works for you.
Why CaptionHubUnparalleled scale
CaptionHub's infrastructure and application architecture powers the world's most demanding subtitling and workflow requirements, without missing a beat.
Quality and accuracy
We responsibly leverage AI to enhance caption accuracy, tailored specifically to your language domain, ensuring precision and relevance in communication.
Completely flexible
Customise CaptionHub to fit your business and give you the controls you need with policies, roles, and approval workflows.
Security by design
Your data security is our top priority. We have ISO 27001 certification and Cyber Essentials Plus, and we're GDPR compliant. So you can rest assured that your content and data is safe.
Intelligent, connected multimedia localisation.
CaptionHub is an AI-powered collaborative platform for multilingual subtitling and voiceover.