I try to create a thumb nail of a Quicktime movie file, using Swift 4 ... AVAssetImageGenerator.
On build that app this error occurs:
Ld /Users/Paul/Library/Developer/Xcode/DerivedData/CocoaSlideCollection-fgptodntmugsykenreeqogcwoimi/Build/Products/Debug/CocoaSlideCollection.app/Contents/MacOS/CocoaSlideCollection normal x86_64
Apple Mach-O Linker (ld) Error Group
Undefined symbols for architecture x86_64:
"_CMTimeCopyDescription", referenced from:
-[AAPLImageFile requestPreviewImage] in AAPLImageFile.o
...
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
...
-[AAPLImageFile requestPreviewImage] in AAPLImageFile.o
Any suggestion what I could do?
Thx Paul