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Subtide

Twitch

Twitch

Section titled “Twitch”

Using Subtide for live stream translation on Twitch.

Overview

Section titled “Overview”

Subtide supports Twitch streams with real-time transcription and translation:

  • Live transcription using Whisper
  • Real-time translation of spoken content
  • Overlay subtitles that don’t interfere with the stream

Getting Started

Section titled “Getting Started”
  1. Navigate to any Twitch stream
  2. Look for the Subtide controls in the player
  3. Click to start translation
  4. Subtitles appear as the streamer speaks

Warning: Requirements Twitch translation requires Tier 2 or higher since live streams don’t have pre-existing subtitles.

How It Works

Section titled “How It Works”
  1. Audio Capture - The extension captures audio from the stream
  2. Transcription - Whisper processes audio chunks in real-time
  3. Translation - LLM translates the transcribed text
  4. Display - Subtitles appear with minimal delay

Controls

Section titled “Controls”

Translation Toggle

Section titled “Translation Toggle”

Located in the Twitch player controls:

  • Click to start/stop translation
  • Icon indicates active state

Subtitle Display

Section titled “Subtitle Display”
  • Position: Adjustable via drag-and-drop
  • Size: Configurable in the menu
  • Style: Matches Subtide’s dark theme

Configuration

Section titled “Configuration”

For best results with Twitch:

Backend Settings

Section titled “Backend Settings”
Terminal window
# Recommended for live streaming
WHISPER_MODEL=base  # Fast processing
WHISPER_BACKEND=mlx  # Or 'faster' for NVIDIA

Tip: Model Selection For live streams, use smaller models (tiny, base) for lower latency. Accuracy is less critical than speed.

Extension Settings

Section titled “Extension Settings”
  • Operation Mode: Tier 2 (Enhanced)
  • Target Language: Your preferred language

Limitations

Section titled “Limitations”
  1. Delay - There’s inherent latency in transcription/translation
  2. Audio quality - Depends on stream quality
  3. Multiple speakers - May have difficulty with overlapping speech
  4. Music/SFX - Background audio can affect transcription quality

Tips for Better Results

Section titled “Tips for Better Results”

Reduce Latency

Section titled “Reduce Latency”
  1. Use a smaller Whisper model (tiny or base)
  2. Run backend locally for lowest network latency
  3. Use Apple Silicon MLX or CUDA for hardware acceleration

Improve Accuracy

Section titled “Improve Accuracy”
  1. Higher quality streams have clearer audio
  2. Single-speaker streams work best
  3. Gaming streams with commentary work well

Handle Multiple Languages

Section titled “Handle Multiple Languages”

If the streamer speaks multiple languages:

  1. Subtide will detect language changes
  2. Translation continues regardless of source language
  3. Some mixing may occur during transitions

VODs and Clips

Section titled “VODs and Clips”

Subtide also works with:

  • VODs (Video on Demand) - Past broadcasts
  • Clips - Short highlight clips
  • Highlights - Curated stream moments

These function like regular videos with full translation support.

Troubleshooting

Section titled “Troubleshooting”

No audio captured

Section titled “No audio captured”
  1. Ensure the stream is unmuted
  2. Check browser permissions for audio
  3. Verify the extension has necessary permissions

High latency

Section titled “High latency”
  1. Use a smaller Whisper model
  2. Check your network connection
  3. Run backend locally instead of remote

Subtitles cutting off

Section titled “Subtitles cutting off”
  1. Speech is being chunked for processing
  2. This is normal for live content
  3. Context is maintained between chunks

Next Steps

Section titled “Next Steps”