PDF to MP3 Converter Guide

This script converts a PDF document into MP3 audio files using Edge TTS and merges them into a smaller number of final audio files. Below is a step-by-step guide to use the script.

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Requirements

1. Python 3.6+

2. Install required Python packages:

   pip install edge-tts pydub PyPDF2

3. Install ffmpeg for audio processing:

   • On macOS (using Homebrew):

     brew install ffmpeg

   • On Ubuntu/Debian:

     sudo apt install ffmpeg

   • On Windows: Download from FFmpeg official website and add it to your PATH.

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Usage

Command Format

Run the script from the terminal using:

python3 book2mp3.py <path_to_pdf> [options]

Required Argument

• <path_to_pdf>: Path to the PDF file you want to convert.

Optional Arguments

• -o, --output: Specify the output folder for MP3 files (default: output_mp3s).
• -c, --chunk-size: Set the approximate number of characters per text chunk (default: 6000).
• -v, --voice: Choose the Edge TTS voice (default: en-US-JennyNeural).

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Example

Basic Usage

python3 book2mp3.py example.pdf

Custom Output Folder and Voice

python3 book2mp3.py example.pdf -o custom_output -v en-GB-RyanNeural

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Output

1. Intermediate MP3 Files: Saved as part_001.mp3, part_002.mp3, etc., in the output folder.
2. Merged MP3 Files: Final merged files are saved as final_part_001.mp3, final_part_002.mp3, etc.

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Notes

• Ensure your PDF contains selectable text; scanned PDFs without OCR won't work.
• Adjust CHUNK_SIZE and PAUSE_DURATION in the script if experiencing issues with large files or throttling.
• Check Edge TTS voices for additional voice options.