title: Objective c - ios : How to pick video from Camera Roll?
body: <p>I try this :</p>
  
  <pre><code> UIImagePickerController *videoPicker = [[UIImagePickerController alloc] init];
  videoPicker.delegate = self;
  videoPicker.modalPresentationStyle = UIModalPresentationCurrentContext;
  videoPicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
  videoPicker.mediaTypes = @[(NSString*)kUTTypeMovie, (NSString*)kUTTypeAVIMovie, (NSString*)kUTTypeVideo, (NSString*)kUTTypeMPEG4];
  videoPicker.videoQuality = UIImagePickerControllerQualityTypeHigh;
  [self presentViewController:videoPicker animated:YES completion:nil];
  </code></pre>
  
  <p>but it only show videos from photos part not all video in camera roll.
  I want to pick all video from Camera roll.
  Please help me by giving some clue or code.
  Thanks in advance!</p>