gistfile1.m

mediaType = @"video";
            if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
                [picker setVideoQuality:UIImagePickerControllerQualityTypeLow];
                //Maximum video length
                [picker setVideoMaximumDuration:10];
                picker.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];
                picker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;
                [self presentViewController:picker animated:YES completion:nil];
            }