ios 知道 hls 直播何时播放了最后一个块

Question

我对流没有问题，但我不知道它何时缓冲或流何时结束。无论如何在Objective-C中确定这一点。我找到了音频解决方案，我什至尝试了 AVPlayerItemDidPlayToEndTimeNotification 但它不起作用。有什么建议？

    NSString *url = liveStream.stream[@"cdn"];

    dispatch_async(dispatch_get_main_queue(), ^{
        AVPlayerItem *playerItem = [[AVPlayerItem alloc]
                                    initWithURL:[NSURL URLWithString:url]];
         [_player replaceCurrentItemWithPlayerItem:playerItem];


        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(itemDidFinishPlaying:) name:AVPlayerItemDidPlayToEndTimeNotification object:playerItem];



        [_player play];
    });
}

-(void)itemDidFinishPlaying:(NSNotification *) notification {

}

Answer 1

除了你正在使用的通知，你应该使用KVO来观察avPlayer的速率，以及avplayer当前AVPlayer项的状态。通过观察这些属性，您可以创建一个状态机，让您的播放器视图控制器知道发生了什么，并且可以从各种状态变化中恢复。根据您观察到的属性，您必须准备和恢复各种玩家状态。

Here's an answer on how to check for buffering

Here's an example of a complete AVPLayer

And of course, here's apple's documentation on AVPlayer

Here's the documentation on AVPlayerItem

Lastly, here's the link on KVOController. You'll thank me for this later.