einstein's legacy's ChapterWork is a Mac OS X utility for working with chapter tracks and markers in your digital movies. Built on Apple's AVFoundation technology, it's designed to free users from using labor-intensive text-based tools and provides a simple and effective graphic interface for creating, updating and internationalizing chapter tracks in your movies.

ChapterWork is designed for professional and amateur video content creators who need to index their work and provide markers for future access. The built-in multi-language capabilities also make ChapterWork a great tool for internationalizing your movie assets.

The app uses a single window graphical user interface makes text-based methods for managing chapter tracks a bit obsolete. ChapterWork can create multiple chapter tracks. These tracks can be manually or automatically enabled to handle the various playback circumstances, for example multiple languages or varying download speeds.

Whether you need one chapter marker or one thousand, ChapterWork doesn't impose any artificial limit on the number of markers in any track. You can use the app to create multiple chapter tracks, assigning a specific language to each. Playback tools, like QuickTime X, can use these associations to present local language chapter markers based on the user's current settings.

ChapterWork exports your movie using a background task. This allows you to work on other activities without waiting for movie processing to finish. Use the Activity Monitor to track your export's progress. Once you've created a new movie, ChapterWork allows you to share the completed output movie via e-mail or using popular internet services (such as Vimeo).

The tool works with the modern movie formats supported by AVFoundation. In certain circumstances, legacy codecs that won't play in the ChapterWork Preview can be modernized to provide a playable output movie.

ChapterWork requires Mac OS X 10.9 or higher. It's available for US$19.99 from the Mac App Store (in the Video category).