Why does DiskCatalogMaker fail to generate a thumbnail image of certain files?

DiskCatalogMaker will use Quick Look to generate thumbnail images.

DiskCatalogMaker can’t generate a thumbnail image from a file if Finder can’t show its Quick Look preview. (Finder also uses Quick Look to generate a thumbnail image.)

FYI: Some legacy .mov formats are no longer supported by QuickLook of Mac OS X 10.9 or later. (Apple Communities: Quicklook no longer previewing Quicktime videos encoded in ProRes or Animation codec.)

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