Convert EPUB files to audiobooks using audiblez and Modal's cloud GPU.

1. Install uv
2. Set up Modal authentication:

   uvx modal setup
   

Run the conversion script with your EPUB file:

./audiobook.py path/to/your/book.epub

The script will:

1. Upload your EPUB to Modal's cloud storage
2. Convert it to audio using audiblez
3. Compress the audio files into a single M4B audiobook
4. Download the generated book as audiobook.m4b
5. Clean up the cloud storage

It should take less than 15 minutes and about $0.15 in Modal fees (see "Usage and billing" in Modal settings):

# Download "Hamlet":
wget https://www.gutenberg.org/cache/epub/27761/pg27761.epub

time ./audiobook.py --epub ./pg27761.epub
# lots of output skipped...
real	14m33.014s

ls -lh audiobook.m4b
-rw-r--r-- 1 *** staff 119M Aug  4 14:17 audiobook.m4b

IMPORTANT: when the script exits due to an error, dangling data may be left in the epub_to_audiobook volume. Go to Modal storage to delete it.

You can:

• change GPU type from T4 to another available GPU
• increase the timeouts to process a longer book
• change narrating voice, language and speed - see audiblez help