功能最全、自定义最高的播放器，也是使用最多得。使用起来较为复杂些。需导入AVKit控件（import AVKit）

相关参数

  • AVPlayer: 负责控制播放器的播放，暂停等操作
  • AVAsset:获取多媒体信息的抽象类，不能直接使用
  • AVURLAsset: AVAsset 的一个子类，使用 URL 进行实例化，实例化对象包换 URL 对应视频资源的所有信息。
  • AVPlayerItem: 管理媒体资源对象，提供播放数据源
  • AVPlayerLayer: 负责显示视频，如果没有添加该类，只有声音没有画面

下载demo

AVPlayer
swift视频播放器使用

基本播放

播放设置

//创建媒体资源管理对象
self.palyerItem = AVPlayerItem(url: NSURL(string: urlString)! as URL)
//创建ACplayer：负责视频播放
self.player = AVPlayer.init(playerItem: self.palyerItem)
self.player.rate = 1.0//播放速度 播放前设置
//创建显示视频的图层
let playerLayer = AVPlayerLayer.init(player: self.player)
playerLayer.videoGravity = .resizeAspect
playerLayer.frame = self.view.bounds
self.view.layer .addSublayer(playerLayer)
//播放
self.player.play()

播放暂停

func pauseButtonSelected(sender:UIButton)  {
sender.isSelected = !sender.isSelected
if sender.isSelected{
self.player.pause()
}else{
self.player.play()
}
}

观察AVPlayerItem属性(观察播放状态、缓存情况等)

当前播放状态

KVO观察当前的播放状态

self.palyerItem.addObserver(self, forKeyPath: "status", options: .new, context: nil)

一共有三种播放状态，准备播放、播放失败、未知。

func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
if keyPath == "status" {
switch self.palyerItem.status{
case .readyToPlay:
//准备播放
self.play()
case .failed:
//播放失败
print("failed")
case.unknown:
//未知情况
print("unkonwn")
}
}

播放时间与总时间

处理时间，有一个结构体CMTime

typedef struct{
CMTimeValue    value;     // 帧数
CMTimeScale    timescale;  // 帧率
CMTimeFlags    flags;        
CMTimeEpoch    epoch;    
} CMTime;

视频总时间

let totalTime = CMTimeGetSeconds((self?.player.currentItem?.duration)!)

当前播放时间

let currentTime = self.playItem.currentTime.value/self.playItem.currentTime.timescale;

实时的获取播放时长和控制进度条
self.player.addPeriodicTimeObserver(forInterval: CMTimeMake(1, 1), queue: DispatchQueue.main) { [weak self](time) in
//当前正在播放的时间
let loadTime = CMTimeGetSeconds(time)
//视频总时间
let totalTime = CMTimeGetSeconds((self?.player.currentItem?.duration)!)
//播放进度设置
self?.slider.value = Float(loadTime/totalTime)
//播放的时间（changeTimeFormat方法是转格式的）
self?.loadTimeLabel.text = self?.changeTimeFormat(timeInterval: loadTime)
//总时间
self?.totalTimeLabel.text =self?.changeTimeFormat(timeInterval:CMTimeGetSeconds((self?.player.currentItem?.duraton)!))
}

播放缓存

与播放缓存相关的观测属性

  • loadedTimeRanges 缓存区间，可用来获取缓存了多少
  • playbackBufferEmpty 缓存不够了 自动暂停播放
  • playbackLikelyToKeepUp 缓存好了 手动播放
    self.palyerItem.addObserver(self, forKeyPath: "loadedTimeRanges", options: .new, context: nil)
    self.palyerItem.addObserver(self, forKeyPath: "playbackBufferEmpty", options: .new, context: nil)
    self.palyerItem.addObserver(self, forKeyPath:"playbackLikelyToKeepUp", options: .new,context:nil)
override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
if keyPath == "status" {
switch self.palyerItem.status{
case .readyToPlay:
self.play()
case .failed:
print("failed")
case.unknown:
print("unkonwn")
}
}else if keyPath == "loadedTimeRanges"{
let loadTimeArray = self.palyerItem.loadedTimeRanges
//获取最新缓存的区间
let newTimeRange : CMTimeRange = loadTimeArray.first as! CMTimeRange
let startSeconds = CMTimeGetSeconds(newTimeRange.start);
let durationSeconds = CMTimeGetSeconds(newTimeRange.duration);
let totalBuffer = startSeconds + durationSeconds;//缓冲总长度
print("当前缓冲时间：%f",totalBuffer)
}else if keyPath == "playbackBufferEmpty"{
print("正在缓存视频请稍等")
}
else if keyPath == "playbackLikelyToKeepUp"{
print("缓存好了继续播放")
self.player.play()
}
}

要记得移除观察,而且这里是self.palyerItem，不要搞错了

self.palyerItem.removeObserver(self, forKeyPath: "status", context: nil)
self.palyerItem.removeObserver(self, forKeyPath: "loadedTimeRanges", context: nil)
self.palyerItem.removeObserver(self, forKeyPath: "playbackBufferEmpty", context: nil)
self.palyerItem.removeObserver(self,forKeyPath: "playbackLikelyToKeepUp", context: nil)
NotificationCenter.default.removeObserver(self)

AVplayer常用相关通知

//音频中断通知
AVAudioSessionInterruptionNotification
//音频线路改变（耳机插入、拔出）
AVAudioSessionSilenceSecondaryAudioHintNotification
//媒体服务器终止、重启
AVAudioSessionMediaServicesWereLostNotification
AVAudioSessionMediaServicesWereResetNotification
//其他app的音频开始播放或者停止时
AVAudioSessionSilenceSecondaryAudioHintNotification
//播放结束
AVPlayerItemDidPlayToEndTimeNotification   
//进行跳转
AVPlayerItemTimeJumpedNotification           
//异常中断通知
AVPlayerItemPlaybackStalledNotification      
//播放失败
AVPlayerItemFailedToPlayToEndTimeNotification

使用AVPlayerItemDidPlayToEndTime通知

NotificationCenter.default.addObserver(self, selector: #selector(playToEndTime), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: nil)
@objc func playToEndTime(){
print("播放完成")
}