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Live captions, in the stream, in any language
Spalk generates live closed captions from your program audio or commentary mix, translates them on the fly, and embeds them into your transport stream in the formats broadcasters and regulators require.
Compliance without a captioning vendor
CEA-708 and CEA-608 captions are injected directly into the outgoing video and advertised in the stream, with DVB teletext available for European delivery. There is no extra hardware in your chain and no separate vendor to coordinate.
Watch captions happen
Transcribed from the live call, translated in real time and embedded in the stream, with player and team names from your glossary rendered correctly in every language.
GOAL! Martínez scores in the 89th minute!
¡GOL! ¡Martínez marca en el minuto 89!
Caption tooling built for live sport
From source selection to on-air rendering, every step of the caption chain is configurable per event and reviewable afterwards.
Captions embedded directly in the outgoing video with backwards-compatible 608 mapping, inside the outputs you already deliver.
Teletext subtitle pages with configurable PIDs for European broadcast chains.
Generate captions from the clean program feed, a commentary team's microphone mix, or both at once.
Translate captions into your target language in real time, with a choice of AI translation providers per caption service.
Glossaries of player, team and sport terminology feed translation, so captions get names right.
Configurable caption delay and row count, matched to your output workflow and audience.
Every caption line is archived in on-air order, searchable live during the event and for a full year afterwards.
A reference-grade caption decoder in the monitor renders position, colour and styling exactly as they will appear on screen, before the captions air.
Streaming transcription with word-level timing feeds the caption pipeline, with a choice of speech-to-text engines per event.
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Accessibility that ships with the event
Captioning rides the same infrastructure as your event and switches on per output, so there is no parallel captioning chain to buy and operate.
Deliver the caption formats regulators and platforms require, on exactly the outputs that need them.
Translated captions let one production serve audiences your commentary doesn't cover yet.
The searchable as-run archive shows exactly what was said on air, and when, for a full year.
Captions are produced entirely in the cloud, so nothing extra ships to the venue.
Ready to caption your next event?
Watch captions go from live audio to on-air text
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