Audiochunker

A Pinokio app that slices any audio file into fixed-length clips and lets you export them all at once.

What it does

• Import any audio format — mp3, wav, flac, m4a, ogg, aac, opus, wma… anything ffmpeg can read.
• Pick a chunk length with a seconds slider: 10 / 20 / 30 / 40 / 50 / 60 seconds.
• Segment the whole file into consecutive clips, each covering a different part of the source (e.g. a 5-minute file at 60s gives you 5 clips: 0:00, 1:00, 2:00, 3:00, 4:00).
• Export all clips at once as a single .zip, or download any clip individually.

Chunking uses ffmpeg's segment muxer with stream copy (no re-encoding), so output clips keep the exact codec/container of the input:

import subprocess

input_file = "input.mp3"
output_pattern = "output_%03d.mp3"

subprocess.run([
    "ffmpeg",
    "-i", input_file,
    "-f", "segment",
    "-segment_time", "60",
    "-c", "copy",
    output_pattern,
])

Requirements

• ffmpeg / ffprobe on PATH. On Pinokio these come from the bundled conda environment, so no extra install is needed.
• Python 3.12 (created automatically by install.js).

Install / Run (Pinokio)

1. Install — creates the env virtualenv and installs Streamlit.
2. Start — launches the Streamlit web UI; click Open Web UI.

ffmpeg/ffprobe must be on PATH. On Pinokio they come from the bundled conda environment, so no extra install step is required.

Run manually (without Pinokio)

pip install -r requirements.txt
streamlit run app.py

Make sure ffmpeg is installed and on your PATH.