在Swift中使用实时滤镜录制视频

import AVFoundation
import CoreImage

// 创建AVCaptureSession对象
let captureSession = AVCaptureSession()

// 配置输入设备
guard let captureDevice = AVCaptureDevice.default(for: .video) else { return }
guard let captureInput = try? AVCaptureDeviceInput(device: captureDevice) else { return }
captureSession.addInput(captureInput)

// 配置输出设备
let captureOutput = AVCaptureMovieFileOutput()
captureSession.addOutput(captureOutput)

// 设置实时滤镜效果
let ciContext = CIContext()
let filter = CIFilter(name: "CIPhotoEffectMono")
let videoDataOutput = AVCaptureVideoDataOutput()
videoDataOutput.setSampleBufferDelegate(self, queue: DispatchQueue(label: "videoQueue"))
captureSession.addOutput(videoDataOutput)

// 开始捕获视频数据
captureSession.startRunning()

// 开始录制视频
let outputURL = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent("output.mov")
captureOutput.startRecording(to: outputURL, recordingDelegate: self)

// 停止录制视频
captureOutput.stopRecording()

// 停止捕获视频数据
captureSession.stopRunning()