Xcode导入过sdl的项目中导入ffmpeg后报错：
"_CMBlockBufferCreateWithMemoryBlock", referenced from:
_videotoolbox_common_end_frame in libavcodec.a(videotoolbox.o)
"_CMSampleBufferCreate", referenced from:
_videotoolbox_common_end_frame in libavcodec.a(videotoolbox.o)
"_kCMFormatDescriptionExtension_SampleDescriptionExtensionAtoms", referenced from:
_av_videotoolbox_default_init2 in libavcodec.a(videotoolbox.o)
"_CMVideoFormatDescriptionCreate", referenced from:
_av_videotoolbox_default_init2 in libavcodec.a(videotoolbox.o)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
1.png
解决方法： 导入 CoreMedia.framework
11.png
