QuickTime 4 Reference

Determining Whether Movie Data Export Is Possible

Although a movie export component can export one or more media types, it may not be able to export all the kinds of data stored in those media. Applications can find out whether a movie export component can export all the data for a particular movie or track by calling the MovieExportValidate function.

Not all export components implement the MovieExportValidate call. In the following code snippet, you make the Validate call, and even if the component routine is not implemented it is still true.



 
Boolean canExport = true;

    MovieExportValidate(ci, &canExport);

    if(canExport) {

    . . . 

    }