QuickTime 4 Reference

Importing In Place

Some movie data import components can create a movie from a file without having to write to a separate disk file. Examples include MPEG, AIFF, DV, and AVI import components; data in files of these types can be played directly by the appropriate media handler components without any data conversion. In such cases it is inappropriate for the user to have to specify a destination file, because there is no need for such a file.

If your import component can operate in this manner, set the canMovieImportInPlace flag to 1 in your component flags when you register your component. The standard file dialog box uses this flag to determine how to import files. The OpenMovieFile and NewMovieFromFile functions use this flag to open some kinds of files as movies.