iPhone上实现流媒体播放器

来源：互联网发布：mac上的网络游戏编辑：程序博客网时间：2024/04/30 04:05

首先，获取到视频的截图

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    UITableViewCell *movieCell = [DataTable dequeueReusableCellWithIdentifier:@"movieCell"];    if (movieCell==nil) {        movieCell = [[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"movieCell"]autorelease];    }    NSString *linkStr = [linkArray objectAtIndex:indexPath.row];    movieCell.textLabel.text = linkStr;    MPMoviePlayerController *movieController = [[MPMoviePlayerController alloc]initWithContentURL:[NSURL URLWithString:linkStr]];    [movieController requestThumbnailImagesAtTimes:[NSArray arrayWithObject:[NSNumber numberWithDouble:0]] timeOption:MPMovieTimeOptionNearestKeyFrame];    [[NSNotificationCenter defaultCenter]addObserver:self                                            selector:@selector(movieThumbnailLoadComplete:) name:MPMoviePlayerThumbnailImageRequestDidFinishNotification object:movieController];    return movieCell;}-(void)movieThumbnailLoadComplete:(NSNotification*)notification{    NSDictionary *userInfo = [notification userInfo];    NSLog(@"userInfo:%@",userInfo);NSNumber *timecode =     [userInfo objectForKey: @"MPMoviePlayerThumbnailTimeKey"];UIImage *image =     [userInfo objectForKey: @"MPMoviePlayerThumbnailImageKey"];}

点击后，启动播放

-(void)initPlayer{    //显示loadingView    [loadingView show:YES];    //使用playerItem获取视频的信息，当前播放时间，总时间等    AVPlayerItem *playerItem = [AVPlayerItem playerItemWithURL:movieURL];    //player是视频播放的控制器，可以用来快进播放，暂停等    AVPlayer *player = [AVPlayer playerWithPlayerItem:playerItem];    [moviePlayeView setPlayer:player];    [moviePlayeView.player play];    //计算视频总时间    CMTime totalTime = playerItem.duration;    //因为slider的值是小数，要转成float，当前时间和总时间相除才能得到小数,因为5/10=0    totalMovieDuration = (CGFloat)totalTime.value/totalTime.timescale;    //NSLog(@"totalMovieDuration:%f",totalMovieDuration);    //在totalTimeLabel上显示总时间    totalTimeLabel.text = [self convertMovieTimeToText:totalMovieDuration];        //检测视频加载状态，加载完成隐藏loadingView    [moviePlayeView.player.currentItem addObserver:self                                        forKeyPath:@"status"                                            options:NSKeyValueObservingOptionNew                                           context:nil];    //添加视频播放完成的notifation    [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(moviePlayDidEnd:) name:AVPlayerItemDidPlayToEndTimeNotification object:moviePlayeView.player.currentItem];}

上述代码来源：https://github.com/yuyi012/VideoStreamDemo2