Inside Macintosh: QuickTime /

Chapter 2 - Movie Toolbox / Movie Toolbox Reference

Functions That Modify Movie Properties

Determining Movie Creation and Modification Time

The Movie Toolbox maintains two timestamps in every movie, track, and media. One timestamp, the creation date, indicates the date and time when the item was created. The other, the modification date, contains the date and time when the item was last changed and saved. The timestamp value is in the same format as Macintosh file system creation and modification times; that is, the timestamp indicates the number of seconds since midnight, January 1, 1904.

The Movie Toolbox provides a number of functions that allow your application to retrieve the creation and modification date information from movies, tracks, and media structures. This section describes those functions.

You can use the GetMovieCreationTime and GetMovieModificationTime functions to work with movie creation and modification dates.

You can use the GetTrackCreationTime and GetTrackModificationTime functions to retrieve a track's creation and modification dates.

Your application can call the GetMediaCreationTime and GetMediaModificationTime functions to get a media's creation and modification dates.

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Subtopics

GetMovieCreationTime

GetMovieModificationTime

GetTrackCreationTime

GetTrackModificationTime

GetMediaCreationTime

GetMediaModificationTime