Ipad MPMoviePlayerController在流媒体播放时自动播放-如何停止？

我正在iPad上播放一部电影。如果我只是加载一个mp4文件，播放器不会自动启动——但在示例m3u8中，它坚持自动启动。有人遇到过这种情况吗？我做错什么了吗

- (id)initWithVideo:(VideoDO*)video frame:(CGRect)rect { 
NSURL* videoURL = [NSURL     URLWithString:@"http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8"]; // With    this URL, player starts automatically
 self.moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];

 moviePlayer.shouldAutoplay = NO;
 moviePlayer.controlStyle = MPMovieControlStyleEmbedded;
 moviePlayer.view.frame = rect;
 moviePlayer.view.backgroundColor = [UIColor blackColor]; 
 [moviePlayer prepareToPlay];  

 self.view = moviePlayer.view;   
 [moviePlayer stop];

 [[NSNotificationCenter defaultCenter] addObserver:self    selector:@selector(movieFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayer];
 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieChangedLoadState:) name:MPMoviePlayerLoadStateDidChangeNotification object:moviePlayer];


 return self;
} 

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在这里你可以做[电影播放器暂停]；而不是[电影播放器停止]；并删除行[moviePlayer prepareToPlay]；从代码，它将工作。如果有任何问题，请告诉我。

似乎就是这样-对于流式视频，“shoulldautoplay”没有任何效果。解决方案可能是首先加载视频缩略图，然后在用户单击缩略图后开始流媒体；而不是[电影播放器停止]；并删除行[moviePlayer prepareToPlay]；从代码，它将工作。如果有任何问题，请告诉我。