フォトアルバムからのビデオの取得方法と再生方法

Question

フォトアルバムからビデオを取得して再生する例を手伝ってください。

次のコードは、

NSURL *URL = [info objectForKey:UIImagePickerControllerMediaURL]; 
    MPMoviePlayerController *moviePlayerController = [[MPMoviePlayerController alloc] initWithContentURL:aurl]; 
     [self.view addSubview:moviePlayerController.view]; 
     moviePlayerController.useApplicationAudioSession = NO; 
     moviePlayerController.fullscreen = YES; 
     [moviePlayerController play]; 

Answer 1

// Choose video from library     
         UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init]; 
         imagePicker.delegate = self; 
         imagePicker.mediaTypes = 
         [UIImagePickerController availableMediaTypesForSourceType: 
         imagePicker.sourceType]; 
         imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 
         [self presentModalViewController:imagePicker animated:YES]; 
         [imagePicker release]; 

が動作していない//ビデオを取得

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info 
{ 
    [picker dismissModalViewControllerAnimated:YES]; 

    NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType]; 
    if ([mediaType isEqualToString:@"public.image"]){ 
     NSLog(@"found an image"); 
    } 
    else if ([mediaType isEqualToString:@"public.movie"]){ 
     NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL]; 
     NSLog(@"found a video"); 
     NSData *webData = [NSData dataWithContentsOfURL:videoURL]; 
     } 

} 

//ビデオを再生

MPMoviePlayerViewController *movie = [[MPMoviePlayerViewController alloc] initWithContentURL:url]; 
[self.view addSubview:movie.view]; 
[self presentMoviePlayerViewControllerAnimated:movie]; 
[movie release]; 

の