MPMoviePlayerController 获取视频缓冲大小

来源：互联网发布：杭州友谦网络编辑：程序博客网时间：2024/04/30 18:27

操作系统：ios5.1

最近在完成一个流媒体相关的任务，需要在线播放视频，还要获取视频缓冲的大小，以便计算视频加载的速度。

我选择了MPMoviePlayerViewController在线播放视频，实现上其实很简单。

关于视频缓冲的大小的获取，代码如下：

    NSArray *events = playerViewController.moviePlayer.accessLog.events;    int count = events.count;    for (int i = 0; i < count; i++)    {        MPMovieAccessLogEvent *currentEvent = [events objectAtIndex:i];        double byts = currentEvent.indicatedBitrate;        int64_t byte = currentEvent.numberOfBytesTransferred;        int64_t bytes = currentEvent.numberOfBytesTransferred >> 10;        NSMutableString *strBytes = [[NSMutableString alloc] initWithCapacity:100];        [strBytes appendFormat:@"totalSize = %d byte", bytes];        if (bytes > 1024)        {            bytes = bytes >> 10;            [bytesS setString:@""];            [bytesS appendFormat:@"total = %d M", bytes];        }        NSLog(@"byte = %f M bytes = %lld", (float)byte / (1024 * 1024), bytes);    }

在播放代码[player play];之后，New一个timer执行上面的代码。

[NSTimer scheduledTimerWithTimeInterval:0.5target:selfselector:@selector(moviePlay)userInfo:nilrepeats:YES];