mChapters is a simple, intuitively and easy-to-use chapter marker editor for MP4/MOV files. Chapter markers will make it easy for users to skip a playing-time to a specific time. It's very useful especially in long duration videos and audios.

mChapters saves chapter marker times and titles as a text track into a file. The text track format is defined by the QuickTime/MP4 specification.
In Mac, you can use them in QuickTime Player, iTunes, Music, TV and other apps which support the format.
In iOS devices, you can use them in apps which support the format. But Apple's Music app and TV app does not support it.

■ Key Features
- Adding chapter markers by specified interval, number of divisions
- Adding chapter markers by importing text file
- Exporting chapter markers as plain text (.txt)
- Fast lossless saving without re-encoding audio and video

■ Supported Formats
- QuickTime movie (mov)
- MP4 file (mp4, m4v, m4a)
But the app cannot open/play the following files.
- Files which QuickTime Player cannot open
- Files which require any conversion or codec components in QuickTime Player
- Protected video/audio files (e.g. Movies, TV Shows downloaded from iTunes Store or TV app)

Please backup your data before using this app, just in case an unexpected error occurs.

What’s New

Version 2.2.4

・Usability improvements

Ratings and Reviews

AK ace ,

Excellent, simple and elegant

This was a great addition to my arsenal of video production tools. I have FCP-X for my main editor, but there are times when I just need to do a simple chapter iinclusion and running it through X is tedious for such a simple task. This allowed me to quickly jump through 2 hours of a dance recital, dropping chapters and titles with great precision for over 40 dances in about 15 minutes. SUPER TIME SAVER! Then it saved the file without a re-encode and VOILA! Chapter markers and titles muxed to the MP4 file effortlessly (or very nearly so). Great app!

pojo ,

Worked to add Chapters to an iMovie export

Apple hasn't added back in chapters to iMove 10 yet (as of May 2019), and this app did the trick! The brief problem I had was I couldn't figure out how to add chapters at first because the movie did not have a Text track. Once I added a Text track I was able to add chapters, and was able to associate the chapters with the video/audio tracks. Thanks for the very well made app!

Ragu6709 ,

Excellent little program for adding chapters

I purchased this software earlier in the week to add chapters to a video I recorded. At first, I had a little difficulty understanding how to incorporate the chapters. Once I viewed the support documentation, it became a snap. I really like the option of using a text file.
This is an excellent addition to iMovie since Apple removed the chaptering feature. Thanks for making this app and for having it at a price point that is very worthwhile


1.3 MB

macOS 10.13 or later, 64-bit processor


English, Japanese

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.