2

我在让 MPMoviePlayerViewController 工作时遇到问题。我有一个新项目，在 viewDidLoad 之后我尝试在 moviePlayerViewController 中播放电影，如下所示。我让电影播放，我收到很多错误消息，如下所示。有人可以解释我做错了什么来得到这些错误

- (void)viewDidLoad
{
    [super viewDidLoad];
    [ self play ];
}

- (void) play {
    NSURL *filmURL = [ NSURL URLWithString:@"http://www.ud-ltd.com/ipmt/Film16.mp4" ];
    self.mvc = [[MPMoviePlayerViewController alloc] initWithContentURL:filmURL ];
    [ self presentMoviePlayerViewControllerAnimated:self.mvc ];
    [ self.view addSubview:self.mvc.view ];
    [ self.mvc.moviePlayer play];
}

错误消息

Jan  8 21:19:28 rezas-macbook.home MoviePlayer[30320] <Error>: CGContextSaveGState: invalid context 0x0
Jan  8 21:19:28 rezas-macbook.home MoviePlayer[30320] <Error>: CGContextClipToRect: invalid context 0x0
Jan  8 21:19:28 rezas-macbook.home MoviePlayer[30320] <Error>: CGContextTranslateCTM: invalid context 0x0
Jan  8 21:19:28 rezas-macbook.home MoviePlayer[30320] <Error>: CGContextDrawShading: invalid context 0x0
Jan  8 21:19:28 rezas-macbook.home MoviePlayer[30320] <Error>: CGContextRestoreGState: invalid context 0x0
2013-01-08 21:19:28.526 MoviePlayer[30320:c07] [MPAVController] Autoplay: Disabling autoplay for pause
2013-01-08 21:19:28.527 MoviePlayer[30320:c07] [MPAVController] Autoplay: Disabling autoplay
2013-01-08 21:19:28.528 MoviePlayer[30320:c07] Warning: Attempt to present <MPMoviePlayerViewController: 0x916ec10> on <ViewController: 0x916c9c0> whose view is not in the window hierarchy!
2013-01-08 21:19:28.536 MoviePlayer[30320:c07] [MPAVController] Autoplay: Skipping autoplay, disabled (for current item: 1, on player: 0)
2013-01-08 21:19:29.864 MoviePlayer[30320:c07] [MPAVController] Autoplay: Enabling autoplay
2013-01-08 21:19:29.868 MoviePlayer[30320:c07] [MPAVController] Autoplay: Likely to keep up or full buffer: 0
2013-01-08 21:19:29.868 MoviePlayer[30320:c07] [MPAVController] Autoplay: Skipping autoplay, not enough buffered to keep up.
2013-01-08 21:19:29.870 MoviePlayer[30320:c07] [MPAVController] Autoplay: Enabling autoplay
2013-01-08 21:19:29.871 MoviePlayer[30320:c07] [MPCloudAssetDownloadController] Prioritization requested for media item ID: 0
2013-01-08 21:19:30.964 MoviePlayer[30320:c07] [MPAVController] Autoplay: Likely to keep up or full buffer: 0
2013-01-08 21:19:30.964 MoviePlayer[30320:c07] [MPAVController] Autoplay: Skipping autoplay, not enough buffered to keep up.
2013-01-08 21:19:31.494 MoviePlayer[30320:c07] [MPAVController] Autoplay: _streamLikelyToKeepUp: 0 -> 1
2013-01-08 21:19:31.495 MoviePlayer[30320:c07] [MPAVController] Autoplay: Likely to keep up or full buffer: 1
2013-01-08 21:19:31.495 MoviePlayer[30320:c07] [MPAVController] Autoplay: Enabling autoplay
4

3 回答 3

4

我也在使用 MPMoviePlayerViewController 在我的一个应用程序中播放实时视频，我也

收到这些错误，但除了这些错误之外，我的视频在这个播放器上播放得很好。

我认为没有解决办法。如果您的视频运行良好，请忽略这些警告

或错误。

于 2013-01-09T04:43:13.517 回答
2

(1) 为了解决这个问题CGContextSaveGState，将你的 alloc-init 包装在一个假的图形上下文中，正如我在这里解释的那样：

iphone MPMoviePlayerViewController CGContext 错误

(2) 其他消息无害，现已在 iOS 6.1 上解决。他们不再出现。

于 2013-02-03T17:36:18.010 回答
0

我还使用 MPMoviePlayerViewController 在我的应用程序上直播视频并得到相同的上述列表错误。我发现 MPMoviePlayer 不支持更大的数据来显示视频，但如果你使用较小的视频数据工作正常，它不会给出任何错误。其实不是准备播放和播放器播放属性的问题。

如果您需要显示更大的数据，请在您的应用程序上使用 webview。

于 2013-03-25T13:11:50.667 回答