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Audio Add Chapters

Add chapters to an audio file from a label/chapters file

Label/chapters file format:

  • Each line: starttime(sec) endtime(sec) title(optional)
  • Separator: TAB or space
  • Example:
    0 10 Intro
    10 25 Chapter 1
    25 60 Chapter 2

Click to upload file or drag and drop file here

Maximum file size: 200MB Supported formats: audio/*

Click to upload file or drag and drop file here

Maximum file size: 5MB Supported formats: text/plain, text/tab-separated-values, text/csv

Key Facts

Category
Media
Input Types
file
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

This tool adds chapters to an audio file using a label or chapters file. Upload your audio and a text file with timestamps and titles to embed navigable chapter markers directly into the audio metadata.

When to Use

  • •When you need to add chapter markers to podcasts, audiobooks, or other audio content for easy navigation.
  • •When you have a label file from audio editing or transcription software and want to embed chapters without manual editing.
  • •When preparing audio for distribution on platforms that support chapter metadata, such as podcast apps or audiobook stores.

How It Works

  • •Upload your audio file in a supported format like MP3 or WAV.
  • •Upload a label file with chapter definitions: each line includes start time (seconds), end time (seconds), and an optional title, separated by tabs or spaces.
  • •The tool processes the files and embeds the chapters into the audio file's metadata.
  • •Download the modified audio file with chapters ready for use in compatible players.

Use Cases

Enhancing podcast episodes with chapter markers to help listeners jump to specific segments like interviews or news.
Creating chapterized audiobooks for distribution on digital platforms, improving user experience with easy navigation.
Adding structure to educational audio content, such as lectures or tutorials, by segmenting them into labeled chapters.

Examples

1. Add Chapters to a Podcast Episode

Podcast Producer
Background
You produce a weekly podcast and want to add chapters to make long episodes more navigable for listeners.
Problem
Listeners often skip through episodes to find specific parts, leading to a poor experience.
How to Use
Upload the podcast audio file and a text file with chapter timestamps and titles, such as '0 120 Introduction' and '120 300 Interview'.
Outcome
The podcast episode now has embedded chapters, allowing listeners to easily jump to sections in their audio player.

2. Segment an Audiobook into Chapters

Audiobook Narrator
Background
You've recorded an audiobook and need to divide it into chapters based on the book's structure for publishing.
Problem
Manually inserting chapters in audio editing software is time-consuming and error-prone.
How to Use
Provide the complete audiobook audio file and a label file listing chapter start and end times with titles, like '0 300 Chapter 1: The Beginning'.
Outcome
A chapterized audiobook is generated, ready for upload to platforms like Audible or Apple Books with proper navigation.

Try with Samples

csv, audio, text
Copyright-Free MP3 Audio Samples
Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio
title token audio
audio, text
Duplicate Line Samples
Sample files with various types of duplicate lines for testing duplicate removal tools
preferred input family text,csv
text, csv
Regex Replace Samples
Collection of common and useful regex replacement patterns for text transformation and data cleaning
preferred input family text,csv
text, csv
Windows String Processing - C# Samples
Comprehensive C# string processing examples for Windows platform including string manipulation, splitting, joining, regex operations, and text analysis
preferred input family text,csv
text, csv

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FAQ

What audio file formats are supported?

The tool supports common audio formats indicated by the audio/* file type, such as MP3, WAV, and others.

What is the exact format for the label file?

Each line should have start time in seconds, end time in seconds, and an optional title, separated by tabs or spaces. For example: '0 10 Intro'.

Can I add chapters without providing titles?

Yes, titles are optional. Chapters will be added with timestamps only if no title is specified in the label file.

Are there file size limits?

Yes, the audio file can be up to 200 MB, and the label file up to 5 MB, as per the tool's constraints.

How are chapters stored in the output audio file?

Chapters are embedded as metadata, such as ID3 tags for MP3 files, making them accessible in audio players that support chapter navigation.

API Documentation

Request Endpoint

POST /en/api/tools/audio-add-chapters

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes -
labelFile file (Upload required) Yes -

File type parameters need to be uploaded first via POST /upload/audio-add-chapters to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
File: File

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-audio-add-chapters": {
      "name": "audio-add-chapters",
      "description": "Add chapters to an audio file from a label/chapters file",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-add-chapters",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]