MPMoviePlayerController和HTTP Live Streaming [英] MPMoviePlayerController and HTTP Live Streaming

问题描述

每一个人。我正试图弄清楚如何使用MPMoviePlayerController播放实时流。为了测试我正在使用苹果测试流样本 http://devimages.apple.com/iphone /samples/bipbopall.html 。
它完全适用于UIWebView，但我无法使其与MPMoviePlayerController一起使用。有我的代码：

  NSURL * mediaURL = [NSURL URLWithString：@http://devimages.apple.com /iphone/samples/bipbopall.html]; 
 MPMoviePlayerController * mp = [[MPMoviePlayerController alloc] initWithContentURL：mediaURL]; 
 [[NSNotificationCenter defaultCenter] addObserver：self 
 selector：@selector（moviePlayBackDidFinish :) 
 name：MPMoviePlayerPlaybackDidFinishNotification 
 object：nil]; 
 
 [mp setControlStyle：MPMovieControlStyleFullscreen]; 
 [mp setMovieSourceType：MPMovieSourceTypeStreaming]; 
 [mp setFullscreen：YES]; 
 
 [self.view addSubview：[mp view]]; 
 
 [mp prepareToPlay]; 
 [mp play]; 
  

实际上，控制器接收MPMoviePlayerPlaybackDidFinishNotification而不播放任何内容。哪里有问题？

解决方案

您的问题可能与网址有关。 MPMoviePlayerController 希望URL直接指向您要播放的文件。您正在提供电影播放器​​无法理解的 HTML 页面的网址。这就是为什么它在 UIWebView 中工作的原因，因为Web浏览器理解 HTML 。如果您想了解有关错误的更多信息，可以查看以下错误，请参阅Apple的文档：

检查URL中的错误loading，
注册
MPMoviePlayerContentPreloadDidFinishNotification
或
MPMoviePlayerPlaybackDidFinishNotification
通知。出错时，这些
通知包含NSError
对象，该对象使用通知的userInfo
字典中的@error
键。

它看起来像：

   - （void）moviePlayBackDidFinish：（NSNotification *）通知{
 NSError * error = [[notification userInfo] objectForKey：@error]; 
 if（error）{
 NSLog（@完成错误：％@，错误）; 
} 
} 
  

如果你想尝试播放那个样本你可以尝试直接访问流的URL，即： http://devimages.apple.com/ iphone / samples / bipbop / bipbopall.m3u8

every one. I'm trying to figure out how to play live stream using MPMoviePlayerController. For testing i'm using Apples test stream sample http://devimages.apple.com/iphone/samples/bipbopall.html. It's perfectly working in UIWebView, but i can't make it work with MPMoviePlayerController. There is my piece of code:

NSURL *mediaURL = [NSURL URLWithString:@"http://devimages.apple.com/iphone/samples/bipbopall.html"];
MPMoviePlayerController *mp = [[MPMoviePlayerController alloc] initWithContentURL:mediaURL];
[[NSNotificationCenter defaultCenter] addObserver:self 
                                         selector:@selector(moviePlayBackDidFinish:) 
                                             name:MPMoviePlayerPlaybackDidFinishNotification 
                                           object:nil]; 

[mp setControlStyle:MPMovieControlStyleFullscreen];
[mp setMovieSourceType:MPMovieSourceTypeStreaming];
[mp setFullscreen:YES];

[self.view addSubview:[mp view]];

[mp prepareToPlay];
[mp play];

Actually the controller recieves MPMoviePlayerPlaybackDidFinishNotification without playing anything. Where is the problem?

解决方案

Your problem is probably with the URL. MPMoviePlayerController wants the URL directly to the file you want to play. You are providing the URL for an HTML page which the movie player doesn't understand. That is why it does work in UIWebView since a web browser understands HTML. If you want more information about what's wrong you can check the error doing the following, quoted from Apple's documentation:

To check for errors in URL loading, register for the MPMoviePlayerContentPreloadDidFinishNotification or MPMoviePlayerPlaybackDidFinishNotification notifications. On error, these notifications contain an NSError object available using the @"error" key in the notification’s userInfo dictionary.

It would look something like:

- (void) moviePlayBackDidFinish:(NSNotification*)notification {
    NSError *error = [[notification userInfo] objectForKey:@"error"];
    if (error) {
        NSLog(@"Did finish with error: %@", error);
    }
}

If you want to try and play that sample you can try and access the URL for the stream directly, which would be: http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8

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