直播视频流iphone

Question

我是iphone和Objective-c的新手。我想向使用我的应用程序的用户展示一场实况转播比赛，假设是足球比赛。iphone应用程序中的直播视频流需要什么？

任何关于这方面的信息都将不胜感激！

谢谢

伙计们，请帮帮我，有没有人以前做过这个？

Answer 1

您只需提供电影文件的URL，流将根据您的连接速度自动设置。

请注意，只有分辨率在iPhone限制范围内的视频才会被播放。较高分辨率的影片将在模拟器上播放，但不能在iPhone上播放。

您需要有一个MPMoviePlayerController对象，其余代码如下所示：

-(void) play {

NSURL *movieURL = [NSURL URLWithString:@"http://movies.apple.com/media/us/mac/getamac/2009/apple-mvp-biohazard_suit-us-20090419_480x272.mov"];


if (movieURL != nil) {
    moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:movieURL];

    moviePlayer.initialPlaybackTime = -1.0;

    // Register to receive a notification when the movie has finished playing. 
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(moviePlayBackDidFinish:) 
                                                 name:MPMoviePlayerScalingModeDidChangeNotification 
                                               object:moviePlayer];

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

    moviePlayer.scalingMode = MPMovieScalingModeAspectFit; 
    moviePlayer.movieControlMode = MPMovieControlModeDefault;
    moviePlayer.backgroundColor = [UIColor blackColor];

    [moviePlayer play];
 }
}

-(void)moviePlayBackDidFinish: (NSNotification*)notification
{
self.navigationItem.hidesBackButton = FALSE;
moviePlayer = [notification object];
[moviePlayer play];
}

-(void)endPlay: (NSNotification*)notification
{
NSLog(@"end Playing");

self.navigationItem.hidesBackButton = FALSE;
//[[UIApplication sharedApplication] endIgnoringInteractionEvents];
[actview stopAnimating];

[[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerScalingModeDidChangeNotification object:moviePlayer];
[[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayer];

[moviePlayer stop];
[moviePlayer release];
}

Answer 2

这里有一个关于直播的参考文档，可能会对你有所帮助，http://developer.apple.com/iphone/library/documentation/NetworkingInternet/Conceptual/StreamingMediaGuide/Introduction/Introduction.html

Answer 3

假设你有视频权利的足球比赛，你需要一个编码器，将现场视频编码，在飞行到正确的格式(mp4，h263等)。播放这些视频的iPhone方法是有一个动态播放列表，它将通过实时视频的块来播放它。