iPhone :How to get duration of video selected from library?

Question

I am using UIImagePickerController to choose video file from library. And user can upload the video.

Also I am using videoMaximumDuration p

Answer 1

Got the solution : I use AVPlayerItem class and AVFoundation and CoreMedia framework.

#import 
#import 

- (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);
}