Nightjar / Slicer

Field utility / 01

Carry the whole night.
Open only a window.

Nightjar Slicer turns multi-gigabyte WAV and FLAC recordings into a quiet, resumable queue for the bird analyzer you already use.

Install Nightjar Plan clips in your browser
  • 01 Streaming memory
  • 02 Resume checkpoints
  • 03 No upload
A moonlit wetland where a silver recording tape passes through a brass cutter and becomes small illuminated segments.
Plate 01 One continuous recording becomes inspectable pieces before identification.

Input

4 GB / 11:42:18
One original recording

Output

235 × 03:00
WAV clips + queue manifest

The handoff before the model

Make the recording manageable, not mysterious.

BirdNET can identify sound. Nightjar handles the awkward scale and file preparation that comes first.

  1. 01

    Inspect the header

    See duration, channels, sample rate, and size without loading the recording into a GUI.

  2. 02

    Choose the cuts

    Use exact intervals or nudge each boundary to the quietest nearby half-second.

  3. 03

    Resume the queue

    Completed clips are verified and reused. A stopped batch continues without repeating extraction.

Local planning desk

Try your WAV header here.

The browser reads a small header slice only. Nothing leaves this device. FLAC and silence-aware planning are available in the CLI.

Your file stays in this browser.
seconds
Between 10 seconds and one hour.

No recording selected

Choose a WAV to preview its time ranges and a privacy-safe manifest.

Version 0.1.0 / MIT

A single local tool.
No model, no cloud.

Build with stable Rust today. Release binaries can be dropped anywhere on your path.

FIELD TERMINAL
cargo install --git https://github.com/B-Divyesh/sf-bird-audio-slicer
nightjar slice NIGHT.WAV --output ./queue --mode silence

A useful boundary

Nightjar prepares evidence. It does not decide what sang.

No BirdNET weights, accuracy claims, public reports, accounts, or location metadata are bundled.