MPMoviePlayerViewController 在模拟器上只播放音频而不播放视频？

Question

我正在使用以下代码从 url 播放视频，但是当视频加载时，仅播放音频，并且模拟器上不显示视频。现在我无法在 iphone 4.0 设备上测试它。 .模拟器有问题还是 MPMoviePlayerViewController 方法不正确？

NSString *videoFilepath = @"http://www.migital.com/Hemant/1.3gp";
NSURL *videoURL = [NSURL URLWithString:videoFilepath ];

MPMoviePlayerViewController *movie = [[MPMoviePlayerViewController alloc] initWithContentURL:videoURL];


[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(playbackFinishedCallback:)
                                             name:MPMoviePlayerPlaybackDidFinishNotification
                                           object:movie];

[self presentMoviePlayerViewControllerAnimated:movie];

Answer 1

试试这个

NSString *videoFilepath = @"http://www.migital.com/Hemant/1.3gp";
NSURL *videoURL = [NSURL URLWithString:videoFilepath ];

MPMoviePlayerViewController *movie = [[MPMoviePlayerViewController alloc] initWithContentURL:videoURL];


[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(playbackFinishedCallback:)
                                             name:MPMoviePlayerPlaybackDidFinishNotification
                                           object:[movie moviePlayer]];

[self presentMoviePlayerViewControllerAnimated:movie];
movie.moviePlayer.movieSourceType = MPMovieSourceTypeStreaming;
[movie.moviePlayer play];