Miln's Movie Splitter (http://miln.eu/moviesplitter/) for Mac OS X is an US$4.99 app that splits movie files into smaller pieces for easier editing and sharing.

The app automatically detects chapter information embedded within a movie.  Designed for owners of Canon cameras with Hybrid Auto movie digest support. Movie Splitter takes full advantage of the Mac's multiple processing cores and queues up movies for splitting in the background.

Movie Splitter makes it easy to split up a movie with chapters into individual sections. Hybrid Auto movies are digest movies created by Canon cameras. Digests combine a photo with a few seconds of footage.

Movie Splitter automatically detects chapter information embedded within a movie. The chapter information can be in 3GPP or QuickTime tracks. Movie Splitter will split a movie at each chapter marker. The software can be used to selectively export single or multiple sections from a movie. This makes it possible to isolate and export only the shots that matter from a movie. Selective exporting avoids demanding large amounts of storage and processing time for unneeded content.

Presented with a movie that has no embedded chapters, Movie Splitter will offer to halve or quarter the movie. This approach makes the software handy for situations where uploading or backing up a single movie exceeds size limits.

Movie Splitter doesn't re-encode exported sections. Sections are passed through untouched, except for being trimmed to size. Movie Splitter doesn't affect the original movie.

Movie Splitter requires Mac OS X 10.9 or higher. It's available at the Mac App Store in the Video category.