Noisy audio
Captions are only as good as the audio they hear. A clean feed from the mixing desk beats a microphone in the crowd.
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Festivals and sports
Large venues bring their own captioning problems: crowd noise, long days across several stages, and audiences who follow on the big screen or on their own phones.
Line 21 sends captions to venue screens, to the stream and to a link anyone can open, and can mix live captions with pre-recorded content on a schedule.
- Festivals
- Cultural events
- Sports events
- Venues
What makes it hard
Long, scheduled days
Stages run from morning to night, with live sessions between pre-recorded spots and announcements.
Audiences on the move
People move between stages and want captions on their own phones, not only on a fixed screen.
How Line 21 handles it
Straight from the desk
Send audio from the mixer, or your RTMP or SRT programme feed, and speech recognition or a captioner takes it from there.
Live and pre-recorded, on a schedule
Playlists mix live captions with .srt or .vtt files. Viewers scan a QR code to see what is live now and what comes next.
Big screens and phones
Every project has a captions page at no extra cost, styled to match your event, ready for a venue screen or a QR code.
Fans watching from home
Encode captions into the broadcast or stream so remote viewers get them too.
Further reading
Tell us about your event
We'll help you choose the right mix of captioners, AI and delivery for your audience.