iPhone MPMoviePlayerViewController : extract total duration

Question

在 MPMoviePlayerViewController 中播放视频之前，如何获取视频的总时间？

Answer 1

要获取电影的总时长，您可以使用:

1).使用 AVPlayerItem 类和 AVFoundation 和 CoreMedia 框架。 (我使用 UIImagePickerController 来选择电影)

#import <AVFoundation/AVFoundation.h>
#import <AVFoundation/AVAsset.h>

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    selectedVideoUrl = [info objectForKey:UIImagePickerControllerMediaURL];

    AVPlayerItem *playerItem = [AVPlayerItem playerItemWithURL:selectedVideoUrl];

    CMTime duration = playerItem.duration;
    float seconds = CMTimeGetSeconds(duration);
    NSLog(@"duration: %.2f", seconds);
}

2). MPMoviePlayerController 有一个属性 duration 。引用 Apple Doc