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Did QuickTime 7.4 change the way Movie Import Components are called when importing from files?

April 26, 2017called components files import importing movie Quicktime

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Did QuickTime 7.4 change the way Movie Import Components are called when importing from files?

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Yes, QuickTime 7.4 changed how the Movie Toolbox invokes Movie Import Components when specifically importing from files. With the release of QuickTime 7.4, the Movie Toolbox directly calls MovieImportDataRef with an ‘alis’ (rAliasType) Data Reference when importing from files instead of calling MovieImportFile with an FSSpec.