The QuickTime movie metadata editor.
It allows you to edit and search the metadata that can be stored in QuickTime movies (mov files), including chapters. Quicktime files support a large number of metadata options, but the QuickTime Player doesn’t provide an easy way of accessing them. Metadata Hootenanny does.
If you find that you have lots and lots of movie files and you want to keep track of which one is which, metadata is for you. For example, if you just watched a great TV show on your iPhone, and you want to find some more shows in your collection by the same writer or director, metadata is for you.
Several web-pages containing movies’ chapters or other metadata including cover art, like IMDB, can be added automatically with a simple drag and drop from your browser.
Chapter times can be copied off of a DVD and added directly to the movie file, with just a few clicks. Chapters from text, ogm, or other mov files can also be copied over.
Extra tracks can be set to be automatically added to the movie when you open it, if the movie has only 1 track to begin with. If your video, audio, and chapters are created individually (my preferred workflow for example), this setting will combine all files in the same folder when you open the first one.