Question

我是iphone和Objective-c的新手。我想向使用我的应用的用户展示一场直播比赛，假设足球比赛。我在iPhone应用程序中的实时视频流需要什么？

对此的任何信息表示赞赏！

由于

伙计们请帮助任何人以前必须这样做吗？

Answer 1

您只需要提供电影文件的URL，并根据连接速度自动设置流。

请注意，只有那些分辨率在iPhone范围内的视频才能播放。较高分辨率的电影将在模拟器上播放，但不适用于iPhone。

您需要拥有MPMoviePlayerController的对象，其余代码如下：

-(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

假设您拥有相关足球比赛的视频权利，您需要一个编码器，它将实时视频编码，动态播放到正确的格式（mp4，h263等）。 iPhone播放这些播放器的方法是拥有一个动态播放列表，该播放列表将通过实时视频的块来播放它。

Answer 3

以下是关于谈论直播的文档的引用，可能对您有所帮助http://developer.apple.com/iphone/library/documentation/NetworkingInternet/Conceptual/StreamingMediaGuide/Introduction/Introduction.html

直播视频流iphone

3 个答案: