Live captions and localization for sports
Deliver low-latency EIA-608 captions, translated subtitles and AI-dubbed audio to live broadcast and OTT—without a hardware encoder or per-channel licence.
- EIA-608 captions
- Live multi-language subtitles
- No hardware
- Low latency
- 24/7 reliability
- No per-channel licence
Trusted by sports networks and broadcasters
Built for live sports
Everything a sports network needs to caption and localize live streams
Accessibility is a requirement, not a science project. SyncWords delivers broadcast-grade captions on a cloud workflow your engineering team can stand up in an afternoon.
Talk to our engineersCaptions for accessibility
EIA-608 captioning that helps you meet accessibility requirements for live broadcast.
No encoder required
Caption live games from the cloud without buying, renting or maintaining per-channel hardware. Professional human captioners are also available when a game calls for one.
Broadcast transport
Native SRT, HLS, RTMP(S) and CMAF ingest, with captions pushed into the stream without re-encoding your video.
Live multi-language subtitles
Add real-time translated subtitles to grow a multi-market and diaspora audience from the same feed.
Low, predictable latency
As little as half a second added to the SRT video path, with caption delay typically under two seconds in the same workflow.
Scales across concurrent feeds
A cloud architecture built for many simultaneous games. No one-encoder-per-channel ceiling.
Custom sports dictionaries
Load player names, teams, venues, sponsors and sport-specific terminology before the game so the engine recognizes what generic models miss.
Pay for usage, not channel licences
Pricing follows the games, languages and outputs you run. Higher committed volume lowers the effective hourly rate.
The hardware encoder just became optional
Hardware encoders tie up capex in a box per channel, plus maintenance and rack space. SyncWords delivers broadcast-grade captions from the cloud with no hardware cost and no per-channel licence. Pricing follows usage, and higher committed volume lowers the effective rate.
- $0
- Hardware to buy
- See matrix
- Subtitle languages
- EIA-608
- Broadcast caption standard
- 24/7
- Cloud uptime
Stand it up in an afternoon
No procurement cycle, no rack space.
Captions in every player
Deliver WebVTT tracks to streaming viewers while EIA-608 serves the broadcast feed.
Global reach & engagement
Turn local games into global events
Accessibility covers your obligations. Localization grows the business. From the same live feed, add translated subtitles and natural-sounding AI dubbing to reach new markets, diaspora fans and sponsors.
Talk about going globalLive captions from 90 input languages
Auto-generate EIA-608 captions across your channels.
Live subtitles in 163 languages
Live translated subtitles from the same feed.
Live AI dubbing in 86 languages
Add alternate-language audio tracks in real time with 900+ AI voices. Closed captions and subtitles in every dubbed language are included.
New sponsorship inventory
Localized feeds open international sponsorship, licensing and distribution deals.
Serve diaspora fans directly
Offer commentary and text in the languages fans already use at home, without launching a separate production for each audience.
Localize highlights automatically
Highlights travel fast. Point Vocalics at your MRSS clip feed and get dubbed and subtitled versions back automatically, no manual project required for each clip.
AWS Elemental
Already running on AWS Elemental? Drop us in.
SyncWords is an AWS technology partner, transactable on AWS Marketplace. Add captions, subtitles and dubbing to your existing live pipeline, no re-architecture.
Mediaconnect & medialive
Slots into AWS Elemental MediaConnect, MediaLive and MediaPackage.
CloudFront delivery
Works with CloudFront CDN delivery, with DRM and AES-128 preserved.
Automate channel control
Automate scheduling, channels and outputs via the SyncWords API.
Developer API
Automate live captioning straight from your stack
Schedule events, select captions, subtitles and dubbing languages, then start, stop and monitor the service from your own live-streaming software.
- Reuse channel mappings
- Schedule concurrent games
- Change languages per event
- Start and stop from your software
curl -X POST https://api.syncwords.com/v1/live/sessions \
-H "Authorization: Bearer $SYNCWORDS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"input": { "protocol": "srt", "mode": "caller", "url": "srt://ingest:9000" },
"captions": { "cea608": true, "languages": ["en", "es", "pt", "fr"] },
"translation": { "subtitle_languages": ["de", "ja", "ar"] },
"dubbing": { "languages": ["es", "fr"], "voices": "regional" }
}'Start a live SRT captioning, translation and dubbing session in one call.
Live sports captioning, frequently asked questions
Do I need a hardware encoder to caption a live sports broadcast?
No. SyncWords delivers EIA-608 captions from the cloud, so you do not need a hardware caption encoder or a contracted human captioner. This is the main difference from the legacy broadcast captioning stack.
Do SyncWords captions help with FCC requirements?
Yes. SyncWords delivers EIA-608 closed captions in real time alongside your program feed, the format broadcasters use to meet their FCC obligations.
What transport protocols are supported?
SyncWords integrates with standard broadcast and streaming transports including SRT, HLS, RTMP(S) and CMAF ingest. Captions are inserted without re-encoding your video.
Can I add other languages for an international or diaspora audience?
Yes. From the same live feed you can deliver real-time translated subtitles and live AI dubbing, which is how sports producers grow multi-market and diaspora viewership without a second production.
How much latency do live captions add?
In an SRT workflow, SyncWords can add as little as half a second to the video path while caption delay typically stays under two seconds.
Can it handle many games at once?
Yes. The cloud architecture scales across many simultaneous live feeds, with none of the one-encoder-per-channel limits of the legacy stack.
Caption your next live game from the cloud.
Tell us about your feeds and caption requirements. Our engineers will scope a cloud captioning workflow. No encoder, no captioner, no procurement cycle.