From http://blog.csdn.net/zoutian007/article/details/7472098
About IOS Video Recording
I wrote a paragraph yesterdayProgramFor video recording, the library cannot be found and an error is prompted.
Avfoundtion. framework.
Prompt
"_ Cvpixelbuffergetpixelformattype", referenced from:
-[Avcallcontroller captureoutput: didoutputsamplebuffer: fromconnection:] In avcallcontroller. o
"_ Cvpixelbufferunlockbaseaddress", referenced from:
-[Avcallcontroller captureoutput: didoutputsamplebuffer: fromconnection:] In avcallcontroller. o
"_ Cvpixelbuffergetheight", referenced from:
-[Avcallcontroller captureoutput: didoutputsamplebuffer: fromconnection:] In avcallcontroller. o
"_ Cvpixelbuffergetdatasize", referenced from:
-[Avcallcontroller captureoutput: didoutputsamplebuffer: fromconnection:] In avcallcontroller. o
"_ Kcvpixelbufferheightkey", referenced from:
-[Avcallcontroller startvideocapture] In avcallcontroller. o
"_ Cvpixelbuffergetbaseaddress", referenced from:
-[Avcallcontroller captureoutput: didoutputsamplebuffer: fromconnection:] In avcallcontroller. o
"_ Cvpixelbufferlockbaseaddress", referenced from:
-[Avcallcontroller captureoutput: didoutputsamplebuffer: fromconnection:] In avcallcontroller. o
"_ Kcvpixelbufferwidthkey", referenced from:
-[Avcallcontroller startvideocapture] In avcallcontroller. o
"_ Cvpixelbuffergetwidth", referenced from:
-[Avcallcontroller captureoutput: didoutputsamplebuffer: fromconnection:] In avcallcontroller. o
Add corevideo. framework!
Next
Undefined symbols for architecture armv7:
"_ Cmsamplebuffergetimagebuffer", referenced from:
-[Avcallcontroller captureoutput: didoutputsamplebuffer: fromconnection:] In avcallcontroller. o
"_ Cmtimemake", referenced from:
-[Avcallcontroller startvideocapture] In avcallcontroller. o
Add coremedia. framework.