Undefined symbols for architecture armv7:
"_CMTimeMake", referenced from:
-[iOSVideoOutput InitVideo:::::] in libmediacore.a(iOSVideoOutput.o)
"_CMSampleBufferGetImageBuffer", referenced from:
-[iOSVideoOutput captureOutput:didOutputSampleBuffer:fromConnection:] in libmediacore.a(iOSVideoOutput.o)
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)