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        "## HeyGen Voice 1.0 Turbo: Voice Clone to Speech \u2014 Workflow Guide\n\n## Input Asset\n- [long_demo.mp3](https://raw.githubusercontent.com/Comfy-Org/workflow_templates/refs/heads/main/input/long_demo.mp3)\n\n## How to Use\n1. Load one speaker, 10 seconds+: Instant Clone returns a `voice_id`, which SaveText writes to `output/`.\n2. Text to Speech already uses `heygen-voice-1-turbo`, the faster model: link `voice_id`, write the script in `text`.\n3. Queue the prompt; `expressiveness_boost` 0.5 stays near the recording. SaveAudioAdvanced writes the mp3.\n\n## Limits\n- First 3 minutes of the recording are used.\n- Script: plain prose, 1 to 5000 characters.\n- Instant voices ignore seed, speed and pitch."
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