在ios10中，我想获取视频采集，但是得到一个错误“[CIImageinitWithCVPixelBuffer:options:]failedbecauseitspixelformatp422isnotsupported.”我的代码是这样的:funcpreviewImage(handle:(image:UIImage?)->Void){dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0),{()->Voidindispatch_async(dispatch_get_main_queue()