Videoconferencing Caption Generation Implementation
To create real-time captions for video conferencing using Kyutai's STT feature, you need to follow the steps below:
- System Architecture Design::
1. Audio capture: Capture the audio stream of the meeting through a virtual sound card (e.g., BlackHole)
2. Real-time processing: Rust server operationmoshi-serverReceive 16kHz PCM streams
3. Subtitle generation: parsing the returned JSON data (text+timestamps)
4. Presentation output: push to videoconferencing software or stand-alone window using WebVTT protocol - Configuration of key parameters::
- set upmin_silence_duration=400msAdapting to natural pauses
- enable--punctuateParameters automatically add punctuation
- adjustments--beam-size 5Balancing speed and accuracy - Latency Optimization Tips: Set 500ms delay buffer in OBS and other software to synchronize audio and video.
Typical deployments show that subtitle latency of <800ms and accuracy of 92% (quiet environment) to 85% (noisy environment) can be achieved in Zoom conference. It is recommended to use with a noise-canceling headset for better results.
This answer comes from the articleKyutai: Speech to text real-time conversion toolThe
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