swift 视频录制
1 添加访问的权限
Privacy - Camera Usage Description
Privacy - Microphone Usage Description
Privacy - Photo Library Usage Description
2 视频录制
// 视频录制
// IWVideoRecordingController.swift
// VideoRecording
//
// Created by goWhere on 16/7/4.
// Copyright © 2016年 iwhere. All rights reserved.
//
importUIKit
importAVFoundation
importPhotos
class IWVideoRecordingController: UIViewController {
// 最常视频录制时间，单位 秒
let MaxVideoRecordTime = 6000
// MARK: - Properties
// 视频捕获会话，他是 input 和 output 之间的桥梁，它协调着 input 和 output 之间的数据传输
let captureSession = AVCaptureSession()
// 视频输入设备，前后摄像头
var camera: AVCaptureDevice?
// 展示界面
var previewLayer: AVCaptureVideoPreviewLayer!
// HeaderView
var headerView: UIView!
// 音频输入设备
let audioDevice = AVCaptureDevice.default(for: AVMediaType.audio)
// 将捕获到的视频输出到文件
let fileOut = AVCaptureMovieFileOutput()
// 开始、停止按钮
var startButton, stopButton: UIButton!
// 前后摄像头转换、闪光灯 按钮
var cameraSideButton, flashLightButton: UIButton!
// 录制时间 Label
var totolTimeLabel: UILabel!
// 录制时间Timer
vartimer:Timer?
var secondCount = 0
// 视频操作View
var operatorView: IWVideoOperatorView!
// 表示当时是否在录像中
var isRecording = false
// MARK: - LifeCycle
override func viewDidLoad() {
super.viewDidLoad()
// 录制视频基本设置
setupAVFoundationSettings()
// UI 布局
setupButton()
setupHeaderView()
}
overridefuncviewWillAppear(_animated:Bool) {
super.viewWillAppear(animated)
navigationController?.isNavigationBarHidden = true
}
overridefuncviewWillDisappear(_animated:Bool) {
super.viewWillDisappear(animated)
navigationController?.isNavigationBarHidden = false
}
// MARK: - Private Methods
/// 对视频进行基本设置
private func setupAVFoundationSettings() {
// 相机
camera = cameraWithPosition(position: AVCaptureDevice.Position.back)
// 设置视频清晰度
captureSession.sessionPreset = AVCaptureSession.Preset.vga640x480
// 添加视频、音频输入设备
ifletvideoInput =try?AVCaptureDeviceInput(device:camera!) {
captureSession.addInput(videoInput)
}
ifaudioDevice!=nil,
letaudioInput =try?AVCaptureDeviceInput(device:audioDevice!) {
captureSession.addInput(audioInput)
}
// 添加视频捕获输出
self.captureSession.addOutput(fileOut)
// 使用 AVCaptureVideoPreviewLayer 可以将摄像头拍到的实时画面显示在 ViewController 上
letvideoLayer =AVCaptureVideoPreviewLayer(session:self.captureSession)
videoLayer.frame=view.bounds
videoLayer.videoGravity = AVLayerVideoGravity.resizeAspectFill
view.layer.addSublayer(videoLayer)
previewLayer= videoLayer
// 启动 Session 回话
self.captureSession.startRunning()
}
///选择摄像头
private func cameraWithPosition(position: AVCaptureDevice.Position) -> AVCaptureDevice? {
let devices = AVCaptureDevice.devices(for: AVMediaType.video)
foritemindevices {
ifitem.position== position {
returnitem
}
}
returnnil
}
// MARK: - UI Settings
/**
创建按钮
*/
private func setupButton() {
// 开始按钮
startButton=prepareButtons(btnTitle:"开始",btnSize:CGSize(width:120,height:50),btnCenter:CGPoint(x:view.bounds.width/2-70,y:view.bounds.height-50))
startButton.backgroundColor = UIColor.red
startButton.addTarget(self, action: #selector(onClickedStartButton(startButton:)), for: .touchUpInside)
// 结束按钮
stopButton=prepareButtons(btnTitle:"结束",btnSize:CGSize(width:120,height:50),btnCenter:CGPoint(x:view.bounds.width/2+70,y:view.bounds.height-50))
stopButton.backgroundColor = UIColor.lightGray
stopButton.isUserInteractionEnabled = false
stopButton.addTarget(self, action: #selector(onClickedEndButton(endButton:)), for: .touchUpInside)
}
// 开始、结束按钮风格统一
privatefuncprepareButtons(btnTitletitle:String,btnSizesize:CGSize,btnCentercenter:CGPoint) ->UIButton{
letbutton =UIButton(frame:CGRect(x:0,y:0,width: size.width,height: size.height))
button.center= center
button.clipsToBounds=true
button.layer.cornerRadius=20
button.setTitle(title,for: .normal)
button.setTitleColor(UIColor.white, for: .normal)
view.addSubview(button)
returnbutton
}
// headerView
private func setupHeaderView() {
headerView=UIView(frame:CGRect(x:0,y:0,width:view.bounds.width,height:64))
headerView.backgroundColor = UIColor.black.withAlphaComponent(0.3)
view.addSubview(headerView)
letcenterY =headerView.center.y+5
letdefaultWidth:CGFloat=40
// 返回、摄像头调整、时间、闪光灯四个按钮
letbackButton =UIButton(frame:CGRect(x:0,y:0,width:20,height:20))
backButton.setBackgroundImage(UIImage(named: "iw_back"), for: .normal)
backButton.addTarget(self,action:#selector(backAction),for: .touchUpInside)
backButton.center=CGPoint(x:25,y: centerY)
headerView.addSubview(backButton)
cameraSideButton=UIButton(frame:CGRect(x:0,y:0,width: defaultWidth,height: defaultWidth *68/99.0))
cameraSideButton.setBackgroundImage(UIImage(named: "iw_cameraSide"), for: .normal)
cameraSideButton.center=CGPoint(x:100,y: centerY)
cameraSideButton.addTarget(self, action: #selector(changeCamera(cameraSideButton:)), for: .touchUpInside)
headerView.addSubview(cameraSideButton)
totolTimeLabel=UILabel(frame:CGRect(x:0,y:0,width:100,height:20))
totolTimeLabel.center=CGPoint(x:headerView.center.x,y: centerY)
totolTimeLabel.textColor = UIColor.white
totolTimeLabel.textAlignment = .center
totolTimeLabel.font = UIFont.systemFont(ofSize: 19)
// 时间的设置
totolTimeLabel.text = "00:00:00"
view.addSubview(totolTimeLabel)
flashLightButton=UIButton(frame:CGRect(x:0,y:0,width: defaultWidth,height: defaultWidth *68/99.0))
flashLightButton.setBackgroundImage(UIImage(named: "iw_flashOn"), for: .selected)
flashLightButton.setBackgroundImage(UIImage(named: "iw_flashOff"), for: .normal)
flashLightButton.center=CGPoint(x:headerView.bounds.width-100,y: centerY)
flashLightButton.addTarget(self, action: #selector(switchFlashLight(flashButton:)), for: .touchUpInside)
headerView.addSubview(flashLightButton)
}
// MARK: - UIButton Actions
// 按钮点击事件
// 点击开始录制视频
@objc private func onClickedStartButton(startButton: UIButton) {
hiddenHeaderView(isHidden: true)
// 开启计时器
timer = Timer.scheduledTimer(timeInterval: 1.0, target: self, selector: #selector(videoRecordingTotolTime), userInfo: nil, repeats: true)
if!isRecording{
// 记录状态： 录像中 ...
isRecording=true
captureSession.startRunning()
// 设置录像保存地址，在 Documents 目录下，名为 当前时间.mp4
let path = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
letdocumentDirectory = path[0]asString
letfilePath:String? ="\(documentDirectory)/\(Date()).mp4"
letfileUrl:URL? =URL(fileURLWithPath: filePath!)
// 启动视频编码输出
fileOut.startRecording(to: fileUrl!, recordingDelegate: self)
// 开始、结束按钮改变颜色
startButton.backgroundColor=UIColor.lightGray
stopButton.backgroundColor = UIColor.red
startButton.isUserInteractionEnabled=false
stopButton.isUserInteractionEnabled = true
}
}
// 点击停止按钮，停止了录像
@objc private func onClickedEndButton(endButton: UIButton) {
hiddenHeaderView(isHidden: false)
// 关闭计时器
timer?.invalidate()
timer=nil
secondCount=0
ifisRecording{
// 停止视频编码输出
captureSession.stopRunning()
// 记录状态： 录像结束 ...
isRecording=false
// 开始结束按钮颜色改变
startButton.backgroundColor = UIColor.red
stopButton.backgroundColor = UIColor.lightGray
startButton.isUserInteractionEnabled = true
stopButton.isUserInteractionEnabled = false
}
// 弹出View
operatorView = (Bundle.main.loadNibNamed("IWVideoOperatorView", owner: self, options: nil)?.first as! IWVideoOperatorView)
operatorView.getSuperViewController(superController: self)
operatorView.frame = CGRect(x: 0, y: view.bounds.height, width: view.bounds.width, height: view.bounds.height)
view.addSubview(operatorView)
UIView.animate(withDuration: 0.3) {
self.operatorView.frame.origin.y=0
}
}
// 录制时间
@objc private func videoRecordingTotolTime() {
secondCount+=1
// 判断是否录制超时
if secondCount == MaxVideoRecordTime {
timer?.invalidate()
HsuAlert(title: "最常只能录制十分钟呢", message: nil, ensureTitle: "确定", cancleTitle: nil, ensureAction: nil, cancleAction: nil)
}
lethours =secondCount/3600
letmintues = (secondCount%3600) /60
letseconds =secondCount%60
totolTimeLabel.text=String(format:"%02d", hours) +":"+String(format:"%02d", mintues) +":"+String(format:"%02d", seconds)
}
// 是否隐藏 HeaderView
func hiddenHeaderView(isHidden: Bool) {
ifisHidden {
UIView.animate(withDuration:0.2) {
self.headerView.frame.origin.y-=64
}
}else{
UIView.animate(withDuration:0.2) {
self.headerView.frame.origin.y+=64
}
}
}
// 返回上一页
@objc private func backAction() {
self.navigationController?.popViewController(animated: true)
}
// 调整摄像头
@objc private func changeCamera(cameraSideButton: UIButton) {
cameraSideButton.isSelected= !cameraSideButton.isSelected
captureSession.stopRunning()
// 首先移除所有的 input
iflet allInputs =captureSession.inputsas? [AVCaptureDeviceInput] {
forinputinallInputs {
captureSession.removeInput(input)
}
}
changeCameraAnimate()
// 添加音频输出
ifaudioDevice!=nil,
letaudioInput =try?AVCaptureDeviceInput(device:audioDevice!) {
self.captureSession.addInput(audioInput)
}
ifcameraSideButton.isSelected{
camera = cameraWithPosition(position: .front)
ifletinput =try?AVCaptureDeviceInput(device:camera!) {
captureSession.addInput(input)
}
ifflashLightButton.isSelected{
flashLightButton.isSelected=false
}
}else{
camera = cameraWithPosition(position: .back)
ifletinput =try?AVCaptureDeviceInput(device:camera!) {
captureSession.addInput(input)
}
}
}
// 切换动画
private func changeCameraAnimate() {
letchangeAnimate =CATransition()
changeAnimate.delegate=self
changeAnimate.duration=0.4
changeAnimate.type=CATransitionType(rawValue:"oglFlip")
changeAnimate.subtype=CATransitionSubtype.fromRight
previewLayer.add(changeAnimate,forKey:"changeAnimate")
}
// 开启闪光灯
@objc private func switchFlashLight(flashButton: UIButton) {
if self.camera?.position == AVCaptureDevice.Position.front {
return
}
let camera = cameraWithPosition(position: .back)
ifcamera?.torchMode==AVCaptureDevice.TorchMode.off{
do{
trycamera?.lockForConfiguration()
}catchleterrorasNSError{
print("开启闪光灯失败 ： \(error)")
}
camera?.torchMode=AVCaptureDevice.TorchMode.on
camera?.flashMode=AVCaptureDevice.FlashMode.on
camera?.unlockForConfiguration()
flashButton.isSelected=true
}else{
do{
trycamera?.lockForConfiguration()
}catchleterrorasNSError{
print("关闭闪光灯失败： \(error)")
}
camera?.torchMode=AVCaptureDevice.TorchMode.off
camera?.flashMode=AVCaptureDevice.FlashMode.off
camera?.unlockForConfiguration()
flashButton.isSelected=false
}
}
override var shouldAutorotate: Bool {
return false
}
override var preferredInterfaceOrientationForPresentation: UIInterfaceOrientation {
return.portrait
}
}
// MARK: - CAAnimationDelegate
extension IWVideoRecordingController: CAAnimationDelegate {
///动画开始
func animationDidStart(_ anim: CAAnimation) {
captureSession.startRunning()
}
///动画结束
funcanimationDidStop(_anim:CAAnimation,finishedflag:Bool) {
}
}
// MARK: - AVCaptureFileOutputRecordingDelegate
extension IWVideoRecordingController: AVCaptureFileOutputRecordingDelegate {
///开始录制
funcfileOutput(_output:AVCaptureFileOutput,didStartRecordingTofileURL:URL,fromconnections: [AVCaptureConnection]) {
}
///结束录制
funcfileOutput(_output:AVCaptureFileOutput,didFinishRecordingTooutputFileURL:URL,fromconnections: [AVCaptureConnection],error:Error?) {
operatorView.getVideoUrl(videoUrl: outputFileURL)
}
}
3 . // 将视频保存 在本地
private func saveVideoToAlbum(videoUrl: URL) {
var info =""
// 保存的方法
PHPhotoLibrary.shared().performChanges({
PHAssetChangeRequest.creationRequestForAssetFromVideo(atFileURL: videoUrl)
}) { (success, error)in
if success {
info ="保存成功"
}else{
info ="保存失败，err = \(error.debugDescription)"
}
DispatchQueue.main.async{
letalertVC =UIAlertController(title: info,message:nil,preferredStyle: .alert)
alertVC.addAction(UIAlertAction(title:"OK",style: .default,handler:nil))
self.controller.present(alertVC,animated:true,completion:nil)
}
}
}
