MPMoviePlayerController load video from Photo library,play so fast - ios6

Question

// CameraViewController.h
#interface CameraViewController : UIViewController{
UIImagePickerController *_picker;
}
#property (strong, nonatomic) IBOutlet UIImageView *imageView;
#property (nonatomic, retain) MPMoviePlayerController *player;
(IBAction)loadImage:(UIButton *)sender;
// CameraViewController.m
#interface CameraViewController ()
#property (strong, nonatomic) MPMoviePlayerController *playView;
#end
#implementation CameraViewController
#synthesize imageView = _imageView;
#synthesize player = _player;
#synthesize playView = _playView;
(void)viewDidLoad
{
[super viewDidLoad];
_picker = [[UIImagePickerController alloc] init];
}
(void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
(IBAction)loadImage:(UIButton *)sender {
_picker.delegate = self;
_picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
NSArray *mediaTypes = [NSArray arrayWithObjects:(NSString *)kUTTypeImage, (NSString *)kUTTypeMovie, nil];
_picker.mediaTypes = mediaTypes;
[self presentViewController:_picker animated:YES completion:NULL];
}
pragma mark -ImagePicker Delegate
(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *image = nil;
NSURL *imageURL = nil;
imageURL = [info valueForKey:UIImagePickerControllerMediaURL];
if (imageURL == nil) {
image = [info valueForKey:UIImagePickerControllerEditedImage];
if (image == nil) {
image = [info valueForKey:UIImagePickerControllerOriginalImage];
_imageView.image = image;
}
else {
}
}
else {
self.player = [[MPMoviePlayerController alloc] initWithContentURL:imageURL];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(movieFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:self.player];
self.player.view.frame = CGRectMake(10.0, 10.0, 200.0, 200.0);
self.player.view.backgroundColor = [UIColor clearColor];
self.player.movieSourceType = MPMovieSourceTypeFile;
[self.player prepareToPlay];
[self.view addSubview:self.player.view];
[self.player play];
}
[picker dismissViewControllerAnimated:YES completion:NULL];
}
(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[picker dismissViewControllerAnimated:YES completion:NULL];
}
pragma mark - User Define
(void)movieFinishedCallback:(NSNotification *)notification {
MPMoviePlayerViewController *player = [notification object];
[[NSNotificationCenter defaultCenter] removeObserver:self
name:MPMoviePlayerPlaybackDidFinishNotification object:player];
[player.view removeFromSuperview];
}
The movieFinishedCallback:method will be called immediately,so the video can not play completely.
How to resolve it?

Answer 1

Apple suggests：
Uses AVPlayer to play videos from the iPod Library, Camera Roll, or via iTunes File Sharing.