Troubleshoot Spoken Captions

Resolve missing, delayed, interrupted, repeated, wrong-language, or feedback-prone TTS.

Written By 4ALL.LIVE

Last updated 12 days ago

Resolve missing, delayed, interrupted, repeated, wrong-language, or feedback-prone TTS.

Best for: Multilingual producers, caption operators, accessibility leads, event administrators, and authorized language reviewers.

Before you start

Translation, target-language count, glossaries, and text-to-speech depend on event permissions, provider/model/language support, plan entitlements, usage allowances or wallet, and eligible BYOK configuration.

  • Confirm source language and provider quality first.
  • List approved target locales, terminology, voice requirements, and human review responsibilities.
  • Test with representative content before distributing viewer links.

Troubleshooting steps

  1. Check event enablement. Feature entitlement, event toggle, provider/model, selected language, and usage.
  2. Check browser playback. User gesture, volume, mute, tab backgrounding, autoplay, battery saver, and output device.
  3. Check text feed. If source/translation is stale, TTS has nothing current to speak.
  4. Check queue. Long segments or slow speed can accumulate delay.
  5. Check duplicates. Source corrections/cache/dedupe can enqueue repeated speech.
  6. Check provider. Credentials/funding, quota, region, network, and outage.
  7. Check feedback. Use headphones and remove TTS from capture bus.
  8. Reset minimally. Pause/stop, reselect language/voice, and restart after current text is healthy.

After the fix: The configured language service produces the intended accessible output with known quality, latency, usage, and recovery behavior.

Confirm the fix

  • The root cause is identified and TTS resumes current intelligible output without feedback or stale queue.

If the problem continues

Works after tapping only

This is expected browser autoplay behavior; document the user action.

Speech far behind

Clear/stop the backlog according to UI, increase speed within reason, and fix source/translation latency.

Repeated phrases

Review segment IDs, source corrections, cache, and dedupe; do not simply restart the whole live session.

Escalation and safety

  • Protect audience hearing.
  • Do not route TTS into STT.
  • Communicate degraded spoken-caption service.