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✨(agents) add multilingual support for real-time subtitles

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Add dynamic configuration for Deepgram STT via environment variables,
enabling multilingual real-time subtitles with automatic language
detection.

Changes:
- Add DEEPGRAM_STT_* environment variables pattern for configuration
- Implement _build_deepgram_stt_kwargs() to dynamically build STT
  parameters from environment variables
- Add whitelist of supported parameters (model, language) for LiveKit
  Deepgram plugin
- Log warnings for unsupported parameters (diarize, smart_format, etc)
- Set default configuration: model=nova-3, language=multi
- Document supported parameters in Helm values.yaml

Configuration:
- DEEPGRAM_STT_MODEL: Deepgram model (default: nova-3)
- DEEPGRAM_STT_LANGUAGE: Language or 'multi' for automatic detection
  of 10 languages (en, es, fr, de, hi, ru, pt, ja, it, nl)

Note: Advanced features like diarization and smart_format are not
supported by the LiveKit Deepgram plugin in streaming mode.
This commit is contained in:
Ghislain LE MEUR
2025-10-24 16:02:45 +02:00
committed by aleb_the_flash
parent b403ac56bf
commit 9f9cef7e2a
2 changed files with 70 additions and 1 deletions
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12
src/helm/meet/values.yaml
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@@ -788,9 +788,21 @@ agents:
## @extra agents.envVars.FROM_CONFIGMAP.configMapKeyRef.key Key within a ConfigMap when configuring env vars from a ConfigMap
## @extra agents.envVars.FROM_SECRET.secretKeyRef.name Name of a Secret when configuring env vars from a Secret
## @extra agents.envVars.FROM_SECRET.secretKeyRef.key Key within a Secret when configuring env vars from a Secret
## @extra agents.envVars.DEEPGRAM_STT_MODEL Deepgram model to use for speech-to-text (default: nova-3)
## @extra agents.envVars.DEEPGRAM_STT_LANGUAGE Language code for transcription or 'multi' for automatic multilingual support with real-time code-switching (default: multi, supports: en, es, fr, de, hi, ru, pt, ja, it, nl)
## @skip agents.envVars
envVars:
<<: *commonEnvVars
# Deepgram Speech-to-Text configuration for real-time streaming
# Only 'model' and 'language' parameters are supported by the LiveKit plugin
#
# DEEPGRAM_STT_MODEL: "nova-3" # Model selection (default)
# DEEPGRAM_STT_LANGUAGE: "multi" # Multilingual mode with auto-detection (default)
# DEEPGRAM_STT_LANGUAGE: "fr" # Force French only
#
# Note: Advanced features (diarization, smart_format, punctuate, detect_language)
# are NOT supported by the LiveKit Deepgram plugin in streaming mode.
# Use language="multi" for automatic multilingual support (10 languages).
## @param agents.podAnnotations Annotations to add to the agents Pod
podAnnotations: {}