func displayLinkDidRefresh(link: CADisplayLink){
    
    let itemTime = videoOutput.itemTime(forHostTime: CACurrentMediaTime())
            
    if videoOutput.hasNewPixelBuffer(forItemTime: itemTime) {
        
        if let pixelBuffer = videoOutput.copyPixelBuffer(forItemTime: itemTime, itemTimeForDisplay: nil){
            unfilteredImage = CIImage(cvImageBuffer: pixelBuffer)
            displayFilteredImage(unfilteredImage: unfilteredImage)
        }
    }
}

这是用于创建AVPlayer实例和CADisplayLink的代码:

    player = AVPlayer(playerItem: item)
    player.isMuted = true
   
    displayLink = CADisplayLink(target: self, selector: #selector(displayLinkDidRefresh(link:)))
    displayLink!.preferredFramesPerSecond = 24
    displayLink!.add(to: RunLoop.main, forMode: RunLoopMode.commonModes)
    
    NotificationCenter.default.addObserver(self, selector: #selector(self.playerItemDidReachEnd(notification:)), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: self.player.currentItem)

当从调试器运行时,我并没有遇到口吃(或者说是在最低级别),但当从存档运行构建时,它会口吃很多。我要做的测试是从手机上删除应用程序,然后将其安装在手机上并进行测试,正如所说的那样,调试版本很好,但归档会产生问题。有什么意见吗?

编辑1:

设法让它更好地工作,但在项目和播放器状态为readyToPlay时,将视频合成附加到播放器项目后仍然口吃。