Troubleshoot Translation and Spoken-Caption Failures

Diagnose missing language, provider credentials, glossary, TTS voice, queue, and player problems.

Written By 4ALL.LIVE

Last updated 12 days ago

Restore text translation or spoken captions while proving whether source captions, translation, or TTS is the failing stage.

Best for: Producers, accessibility operators, and support.

Before you start

Translation/TTS requires enabled languages, plan entitlements, valid provider configuration, and available usage/wallet capacity.

  • Use a non-production reproduction when possible.
  • Record current configuration before changes.
  • Keep an independent confidence monitor and fallback.
  • Confirm source captions are healthy.
  • Record source/target languages, provider, glossary, voice, output, and first failure time.
  • Use a private viewer for testing.

Troubleshooting steps

  1. Verify the target language is enabled on the event and selected by the viewer/output.
  2. Confirm source finals arrive; translation cannot recover absent source text.
  3. Check organization-managed or BYOK provider credentials, region, quota, billing, and supported language pair.
  4. Temporarily test without a custom glossary to isolate malformed terms or incompatible provider behavior.
  5. Compare translation status/metadata and sequence with source captions.
  6. For spoken captions, verify TTS entitlement, voice availability, browser autoplay/audio output, volume, and queue state.
  7. Check whether the target language works in text but fails in TTS; if so, isolate voice/provider support.
  8. Restore glossary/voice one change at a time and validate terminology, latency, and privacy.

After the fix: The issue is isolated to event configuration, provider translation, glossary processing, TTS synthesis, or viewer playback.

Confirm the fix

  • Source captions are healthy.
  • Target text updates with sequence.
  • Spoken output uses correct voice/device.
  • Provider quota/usage state is documented.

If the problem continues

  • Language absent: enable it and republish/share as required.
  • 401/403: repair credential/access; never paste key into support notes.
  • 429/quota: use approved provider/funding fallback.
  • Text works/audio fails: allow autoplay and select correct output device.

Escalation and safety

Important: Translated and synthesized content can be inaccurate. Keep human review for safety-critical, legal, medical, or public-emergency material.

  • Configure Translation Languages and Providers
  • Configure Spoken Captions and TTS Voices