AVPlayer的简单使用

AVPlayer是cocoa提供的系统播放器组件。下面提供AVPlayer的简单使用方法。复杂的界面定制及横屏支持等操作这里不做介绍。
AVPlayer基本组件介绍：
AVPlayerItem：每条视频资源的管理项，一个item对应一条视频资源
AVPlayerLayer：AVPlayer的播放视图载体，AVPlayer本身不是View类（AVPlayer继承自NSObject类）
seek方法：切换AVPlayer的进度

AVPlayer支持的视频格式（系统播放器支持的视频格式）

H.264、MPEG-4，扩展名（压缩格式）：.mp4、.mov、.m4v、.m2v、.3gp、.3g2等

Swift代码

直接贴代码：

var player: AVPlayer?
@IBOutlet weak var slider: UISlider!

override func viewDidLoad() {
        super.viewDidLoad()
        
        // Do any additional setup after loading the view.
        // 初始化avplayer
        configurePlayer()
    }
func configurePlayer() {
        let url = URL(string: "http://pri-video.v.medlinker.net/5595b16d-72bc-4fcb-bef2-c01327abeab3/10.m3u8")

        // AVPlayerItem用来管理视频资源，一条item对应一个视频资源
        let item = AVPlayerItem(url: url!)

        // 使用item，初始化avplayer
        player = AVPlayer(playerItem: item)

        // 使用avplayer初始化AVPlayerLayer，将AVPlayerLayer添加到view上
        let layer = AVPlayerLayer(player: player)
        view.layer.addSublayer(layer)
        layer.frame = CGRect(x: 100, y: 100, width: 200, height: 200)
        layer.videoGravity = AVLayerVideoGravityResizeAspect;
    }

    @IBAction func play(_ sender: Any) {
        // rate属性表示avplayer的播放状态，1表示正在播放；0表示暂停播放
        if player?.rate == 0 {
            player?.play()
        }
    }
    @IBAction func pause(_ sender: Any) {
        if player?.rate == 1 {
            player?.pause()
        }
    }
    @IBAction func sliderAction(_ sender: Any) {
        // 视频的总时间
        let sumTime = Float((player?.currentItem?.duration.value)!) / Float((player?.currentItem?.duration.timescale)!)

        // 视频要切换的时间
        let toTime = sumTime * slider.value

        // 切换时间
        player?.seek(to: CMTimeMakeWithSeconds(Float64(toTime), Int32((player?.currentItem?.duration.timescale)!)), completionHandler: { (Bool) in
            self.player?.play()
        })
    }

OC代码

@interface ViewController ()
/// 控制视频播放的控件
@property (weak, nonatomic) IBOutlet UISlider *progressSlider;

/// 声明播放视频的控件属性[既可以播放视频也可以播放音频]
@property (nonatomic,strong) AVPlayer *player;

/// 播放的总时长
@property (nonatomic,assign) CGFloat sumPlayOperation;

@end

@implementation ViewController
#pragma mark - life cycle
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    [self configurePlayer];
}

#pragma mark - play methods
- (void)configurePlayer {
    // 设置播放的url
    NSString *urlStr = @"http://pri-video.v.medlinker.net/5595b16d-72bc-4fcb-bef2-c01327abeab3/10.m3u8";
    
    NSURL *url = [NSURL URLWithString:urlStr];
    
    // 设置播放的项目
    AVPlayerItem *item = [[AVPlayerItem alloc] initWithURL:url];
    
    // 初始化player对象
    self.player = [[AVPlayer alloc] initWithPlayerItem:item];
    
    // 设置播放页面
    AVPlayerLayer *layer = [AVPlayerLayer playerLayerWithPlayer:self.player];
    
    // 设置播放页面的大小
    layer.frame = CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 300);
    layer.backgroundColor = [UIColor cyanColor].CGColor;
    
    // 设置播放窗口和当前视图之间的比例显示内容
    layer.videoGravity = AVLayerVideoGravityResizeAspect;
    
    // 添加播放视图到self.view
    [self.view.layer addSublayer:layer];
    
    // 设置播放进度的默认值
    self.progressSlider.value = 0;
    
    // 设置播放的默认音量值
    self.player.volume = 1.0f;
}

#pragma mark - event response
- (IBAction)startPlayer:(id)sender {
    [self.player play];
}

- (IBAction)stopPlayer:(id)sender {
    [self.player pause];
}

// change pregress
- (IBAction)changeProgress:(id)sender {
    self.sumPlayOperation = self.player.currentItem.duration.value / self.player.currentItem.duration.timescale;
    // CMTimeMake(a,b) a表示当前时间，b表示每秒钟有多少帧
    [self.player seekToTime:CMTimeMakeWithSeconds(self.progressSlider.value * self.sumPlayOperation, self.player.currentItem.duration.timescale) completionHandler:^(BOOL finished) {
        [self.player play];
    }];
}

@end