The Movie Toolbox includes the routines you need to play, edit, create, and
otherwise manipulate time-based data in QuickTime files. If a file
contains compressed image data, the Movie Toolbox automatically interacts
with the Image Compression Manager to decompress the movie in the optimum
way in real time. The Movie Toolbox includes routines with names such as
CreateMovieFile, CutMovieSelection, IsMovieDone, and AddUserData.