AVPlayer 流媒体工作，但它没有

Question

在 El Capitan 10.11.2 和 IOS 9.2 应用下运行 Xcode 7.1.1

试图了解实现视频流播放所需的最少代码，并在这里制作了这个非常简单的部分......严格来说不需要观察者，但它悄悄进入，所以我离开了。

static const NSString *ItemStatusContext;
// a class static

self.avPlayer = [AVPlayer playerWithURL:[NSURL URLWithString:@"http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8"]];
[self.avPlayer addObserver:self forKeyPath:@"status" options:0 context:&ItemStatusContext];

self.avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:self.avPlayer];
self.avPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
avPlayerLayer.frame = CGRectMake(128, 128, 512, 386);
[self.view.layer addSublayer: avPlayerLayer];
[self.avPlayer play];

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
                    change:(NSDictionary *)change context:(void *)context {

if (context == &ItemStatusContext ) {
    AVPlayer *thePlayer = (AVPlayer *)object;
    if ([thePlayer status] == AVPlayerStatusFailed) {
        NSError *error = [self.avPlayer error];
        // Respond to error: for example, display an alert sheet.
        NSLog(@"error %@",error);
        return;
    }
    NSLog(@"player status %ld",(long)[thePlayer status]);
    // Deal with other status change if appropriate.
}
// Deal with other change notifications if appropriate.
//[super observeValueForKeyPath:keyPath ofObject:object
 //                      change:change context:context];
return;
}

它可以工作，但是...仅在 Apple 提供的演示流上，我没有给它播放其他任何东西...

** 尝试过 **

也尝试将此代码添加到混合中，这也适用于 Apple 演示流，但我没有尝试过其他代码。

NSURL *url = [NSURL URLWithString:@"http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8"];
AVURLAsset *avasset = [[AVURLAsset alloc] initWithURL:url options:nil];

avPlayerItem = [[AVPlayerItem alloc] initWithAsset:avasset];
self.avPlayer = [[AVPlayer alloc] initWithPlayerItem:avPlayerItem];

.......

** 更多更新 ** ...重新设计了观察者，因为我没有从中获得有用的信息，现在它告诉我苹果 m3u8 真的可以玩了；并且在我尝试的所有其他事情上都“失败”了......

所以......所有这些都失败了......

 //self.avPlayer = [AVPlayer playerWithURL:[NSURL URLWithString:@"http://content.uplynk.com/209da4fef4b442f6b8a100d71a9f6a9a.m3u8"]];
//self.avPlayer = [AVPlayer playerWithURL:[NSURL URLWithString:@"http://content.jwplatform.com/manifests/vM7nH0Kl.m3u8"]];
//self.avPlayer = [AVPlayer playerWithURL:[NSURL URLWithString:@"http://walterebert.com/playground/video/hls/sintel-trailer.m3u8"]];

 - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
                    change:(NSDictionary *)change context:(void *)context {


if (object == self.avPlayer.currentItem && [keyPath isEqualToString:@"status"]) {

    if (avPlayer.currentItem.status == AVPlayerStatusFailed) {
        NSError *error = [self.avPlayer error];
        // Respond to error: for example, display an alert sheet.
        NSLog(@"AVPlayerStatusFailed error %@",error);
        return;
    }
    if (avPlayer.currentItem.status == AVPlayerStatusUnknown) {
        NSError *error = [self.avPlayer error];
        NSLog(@"AVPlayerStatusUnknown error %@",error);
    }
    if (avPlayer.currentItem.status  == AVPlayerStatusReadyToPlay) {
        NSLog(@"AVPlayerStatusReadyToPlay");
        [self.avPlayer play];
    }
    //[super observeValueForKeyPath:keyPath ofObject:object
             //              change:change context:&ItemStatusContext];
    // Deal with other status change if appropriate.
}
// Deal with other change notifications if appropriate.
//[super observeValueForKeyPath:keyPath ofObject:object
 //                      change:change context:context];

return;

}

Answer 1

唷，回忆一下以前的事情；真的没有任何借口。设法通过寻找完全不同的地方来解决它；在 info.plist 中需要这个键来播放任意流。

 <key>NSAppTransportSecurity</key>
 <dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
 </dict>

我知道这有点松懈，但如果他们想让他们的应用程序更加防弹，我现在就让读者做更多的研究:) 这样做，使用 EDITED 部分并在您的业务中删除主代码中的 [self.avPlayer play]（第 8 行）。