Audio Splitter

Segment media files into audio chunks with intelligent silence detection for clean cut points.

Quick Start

bash

# Single file (video or audio)
./scripts/segment_audio.sh video.mp4 1800

# Batch processing
./scripts/batch_segment.sh -d ./videos 1800

Scripts

Script	Purpose
`segment_audio.sh`	Segment single file (video or audio)
`batch_segment.sh`	Batch wrapper for multiple files

segment_audio.sh

Segment a single media file into audio chunks.

bash

./scripts/segment_audio.sh [OPTIONS] <input_file> <segment_seconds>

Option	Default	Description
`-w, --window`	10	Search window ±N seconds
`-n, --noise`	-60dB	Silence threshold (dBFS)
`-s, --silence`	2	Min silence duration (seconds)
`-o, --output-dir`	input dir	Output directory

Examples:

bash

./scripts/segment_audio.sh video.mp4 1800              # 30-min segments
./scripts/segment_audio.sh podcast.mp3 1800
./scripts/segment_audio.sh -w 15 -n "-35dB" lecture.mkv 2700

batch_segment.sh (Batch)

Batch process multiple files in a directory.

bash

./scripts/batch_segment.sh -d [OPTIONS] <input_dir> <segment_seconds>

Option	Default	Description
`-d, --dir`	-	Enable batch mode
`--depth`	3	Directory traversal depth
`-w, --window`	10	Search window ±N seconds
`-n, --noise`	-60dB	Silence threshold
`-s, --silence`	2	Min silence duration
`-o, --output-dir`	input dir	Output directory

Examples:

bash

./scripts/batch_segment.sh -d ./lectures 1800
./scripts/batch_segment.sh -d ./podcasts --depth 5 3600
./scripts/batch_segment.sh -d ./videos -o ./output 1800

Output Format

{source_name}_{num}_[{start}-{end}].{ext}

Example: video.mp4 → video_01_[0-1800].aac, video_02_[1800-3595].aac

Supported Formats

•Video: mp4, mkv, avi, mov, webm, flv, wmv, m4v
•Audio: mp3, aac, flac, wav, ogg, opus, m4a, wma

Detection Settings

Audio Type	Noise	Window	Silence
Quiet studio	-50dB	5s	0.5s
Default	-60dB	10s	2s
Noisy recording	-35dB	15s	1.5s

Dependencies

•FFmpeg with ffprobe (brew install ffmpeg)

Related Skills

•audio-extractor: Extract complete audio track from video (no segmentation)