iphone - How to get video frame from AVCaptureOutput face detect metadata objects -


i able face detection video stream working following stachecam example wwdc 2012.

however, cannot corresponding image frame. have both 

captureoutput:didoutputsamplebuffer:fromconnection:

and

captureoutput:didoutputmetadataobjects:fromconnection:

firing , giving me data both asynchronous calls , don't see way accurately sync facebox frame.


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