Iphone MPMoviePlayerViewController不播放视频或显示控件

这是我的代码，应该播放嵌入在子视图中的视频，但它只显示没有控件的静态图像

- (void)displayVideo:(NSURL *)videoURL
{
    if (self.mediaPlayer) {
        [self.mediaPlayer.view removeFromSuperview];
        self.mediaPlayer = nil;
    }

    self.mediaPlayer = [[MPMoviePlayerViewController alloc] initWithContentURL:videoURL];
    [self.mediaPlayer.moviePlayer prepareToPlay];
    self.mediaPlayer.moviePlayer.controlStyle = MPMovieControlStyleEmbedded;
    self.mediaPlayer.view.frame = CGRectMake(0, 0, self.mediaView.bounds.size.width, self.mediaView.bounds.size.height);
    [self.mediaView addSubview:self.mediaPlayer.view];
    [self.mediaPlayer.moviePlayer play];
}

我还尝试直接加载媒体播放器，其中mediaPlayer是MPMoviePlayerController，而不是mpmovieplayervicewcontroller，但在只有黑色视图的情况下，加载更少

    self.mediaPlayer = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];
    [self.mediaPlayer prepareToPlay];
    self.mediaPlayer.moviePlayer.controlStyle = MPMovieControlStyleEmbedded;
    self.mediaPlayer.view.frame = CGRectMake(0, 0, self.mediaView.bounds.size.width, self.mediaView.bounds.size.height);
    [self.mediaView addSubview:self.mediaPlayer.view];
    [self.mediaPlayer play];

---

谢谢您的帮助。

第一个代码完全错误。使用MPMoviePlayerViewController的唯一方法是作为显示视图控制器（

presentViewController:…

）；你不能抓住它的观点，试图把它塞进你自己的界面

第二种可能性要大得多。因此，这里有一些事情需要考虑：

• videoURL

  有效吗？你怎么知道的？不，说真的。再想想格式，因为并非所有视频格式都可以在iOS下播放

• self.mediaPlayer

  是否保留电影播放器控制器？再次，仔细观察；这是至关重要的。它必须具有

  strong

  或

  retain

  策略

• 您的界面中是否有其他媒体播放器控制器视图？我注意到，在第二个代码中，您忘记删除前一个代码。这是至关重要的！这种观点只能有一种

（顺便说一下，不需要要求

MPMovieControlStyleEmbedded

；这是此配置中的默认设置。）

最后，与工作代码进行比较可能会有所帮助。我书中的代码确实有效：

通过下载此示例，您可以证明：

---

首先检查您的视频URL是否有效？iOS中的视频技术支持使用.mov、.mp4、.m4v和.3gp文件扩展名并使用以下压缩标准播放电影文件：

1） H.264视频，高达1.5 Mbps，640 x 480像素，每秒30帧，低复杂度版本的H.264基线配置文件，AAC-LC音频高达160 Kbps，48 kHz，立体声音频为.m4v、.mp4和.mov文件格式

 -(void) viewWillAppear:(BOOL)animated {
     [super viewWillAppear:animated];

     player = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL URLWithString:strSelectedVideoUrl]];
     player.scalingMode = MPMovieScalingModeAspectFit;
     player.movieSourceType = MPMovieSourceTypeFile;
       player.view.frame = CGRectMake(0, 45, 320, 400);
       player.shouldAutoplay = YES;
     [player prepareToPlay];
     [self.view addSubview:player.view];
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:player];

     [player play];
 }
 - (void) movieFinishedCallback:(NSNotification*) aNotification {
     MPMoviePlayerController *player1 = [aNotification object];
     [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:player1];
     [player stop];
     [player1.view removeFromSuperview];
     //[player1 release];
     player1 = nil;
     [self.navigationController popViewControllerAnimated:YES];
 }

2） H.264视频，高达768 Kbps，320 x 240像素，每秒30帧，基线配置文件高达1.3级，AAC-LC音频高达160 Kbps，48 kHz，立体声音频为.m4v、.mp4和.mov文件格式

 -(void) viewWillAppear:(BOOL)animated {
     [super viewWillAppear:animated];

     player = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL URLWithString:strSelectedVideoUrl]];
     player.scalingMode = MPMovieScalingModeAspectFit;
     player.movieSourceType = MPMovieSourceTypeFile;
       player.view.frame = CGRectMake(0, 45, 320, 400);
       player.shouldAutoplay = YES;
     [player prepareToPlay];
     [self.view addSubview:player.view];
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:player];

     [player play];
 }
 - (void) movieFinishedCallback:(NSNotification*) aNotification {
     MPMoviePlayerController *player1 = [aNotification object];
     [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:player1];
     [player stop];
     [player1.view removeFromSuperview];
     //[player1 release];
     player1 = nil;
     [self.navigationController popViewControllerAnimated:YES];
 }

3） MPEG-4视频，高达2.5 Mbps，640 x 480像素，每秒30帧，简单配置文件，AAC-LC音频高达160 Kbps，48 kHz，立体声音频为.m4v、.mp4和.mov文件格式

 -(void) viewWillAppear:(BOOL)animated {
     [super viewWillAppear:animated];

     player = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL URLWithString:strSelectedVideoUrl]];
     player.scalingMode = MPMovieScalingModeAspectFit;
     player.movieSourceType = MPMovieSourceTypeFile;
       player.view.frame = CGRectMake(0, 45, 320, 400);
       player.shouldAutoplay = YES;
     [player prepareToPlay];
     [self.view addSubview:player.view];
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:player];

     [player play];
 }
 - (void) movieFinishedCallback:(NSNotification*) aNotification {
     MPMoviePlayerController *player1 = [aNotification object];
     [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:player1];
     [player stop];
     [player1.view removeFromSuperview];
     //[player1 release];
     player1 = nil;
     [self.navigationController popViewControllerAnimated:YES];
 }

---

试试这个，它对我很有效

NSURL *movieURL = [NSURL URLWithString:@"http://........"];

// Initialize a movie player object with the specified URL

 self.moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:movieURL];

self.moviePlayer.controlStyle = MPMovieControlStyleFullscreen;


    [self.moviePlayer.view setFrame:self.view.bounds];

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

    [self.moviePlayer play];

---

结果如何？