voxscriber 0.2.6

Local speaker diarization using MLX Whisper (macOS) or faster-whisper (Linux/CUDA) and Pyannote

VoxScriber

Professional speaker diarization running 100% locally. Supports MLX Whisper on Apple Silicon and faster-whisper on Linux/CUDA, combined with Pyannote 3.1.

Requirements

• Python 3.10+
• Hugging Face token (free, one-time model download)
• For GPU: CUDA 12 + cuDNN 9 (optional, CPU works too)

That's it. No FFmpeg, no system packages, no sudo required.

Installation

pip install voxscriber

The right Whisper backend is installed automatically:

• macOS Apple Silicon: MLX Whisper
• Linux/other: faster-whisper (CUDA or CPU)

Setup Hugging Face Token

VoxScriber uses pyannote models which require a Hugging Face token.

Option 1: Interactive setup (recommended)

voxscriber-doctor

This will guide you through accepting the model terms and saving your token securely.

Option 2: Using huggingface-cli

# First, accept terms at https://huggingface.co/pyannote/speaker-diarization-3.1
huggingface-cli login

Your token will be saved to ~/.cache/huggingface/token and used automatically.

Option 3: Environment variable

export HF_TOKEN=your_token_here

Usage

# Basic
voxscriber meeting.m4a

# With known speaker count
voxscriber meeting.m4a --speakers 2

# All formats
voxscriber meeting.m4a --formats md,txt,json,srt,vtt

# Sentence-level subtitle segmentation for editing workflows
voxscriber meeting.m4a --formats srt,vtt --srt-mode sentence --srt-max-duration 15

# Print to console
voxscriber meeting.m4a --print

Python API

from voxscriber import DiarizationPipeline, PipelineConfig

config = PipelineConfig(
    num_speakers=2,
    language="en",
)
pipeline = DiarizationPipeline(config)
transcript = pipeline.process("meeting.m4a")

for segment in transcript.segments:
    print(f"{segment.speaker}: {segment.text}")

Output Formats

Format	Description
md	Markdown with bold speaker names
txt	Timestamped plain text
json	Structured data with word-level timestamps
srt	SubRip subtitles
vtt	WebVTT subtitles

Options

voxscriber --help

  --speakers, -s    Number of speakers (if known)
  --language, -l    Force language (e.g., 'en', 'es')
  --model, -m       Whisper model (default: large-v3-turbo on GPU/MLX, small on CPU)
  --formats, -f     Output formats (default: md,txt)
  --output, -o      Output directory
  --device          auto (default), mps, cuda, or cpu
  --srt-mode        Subtitle segmentation mode for srt/vtt: speaker|sentence
  --srt-max-duration  Maximum subtitle duration in seconds for srt/vtt
  --quiet, -q       Suppress progress
  --print           Print transcript to console

Performance

~0.1-0.15x RTF on Apple Silicon (MLX). ~0.15-0.25x RTF on NVIDIA GPUs (faster-whisper). A 20-minute recording processes in ~2-4 minutes depending on hardware.

Troubleshooting

Run the diagnostic tool to check your setup:

voxscriber-doctor

This will check FFmpeg availability and HF_TOKEN, and offer to fix common issues automatically.

Other Issues

Issue	Solution
requires Python >= 3.10	Use Python 3.10+: python3.10 -m venv .venv
Installed wrong package	It's voxscriber (with 'r'), not voxscribe
HF_TOKEN required	Run voxscriber-doctor to set up authentication

Support

If you find VoxScriber useful, consider supporting its development:

License

MIT