Video Upload in iOS.

Hey guys i am currently working on an iOS App where i am trying to upload Photos and Videos.

Photo upload is working fine but with Video there are some issues.
This is my code:

(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info{

CLCloudinary *cloudinary = [[CLCloudinary alloc] initWithUrl: @"cloudinary://869125413588945:Ocd9qDSH4B4Nj3UFsbD2wu8ZJS4@owaves"];
CLUploader* uploader = [[CLUploader alloc] init:cloudinary delegate:self];
MPMediaItem *video = [info objectForKey:UIImagePickerControllerMediaURL];
NSData *data = [NSData dataWithContentsOfFile:video];

NSString* time = _timeLabel.text;
NSString* activityCategory = _descriptionLabel.text;
UIDevice *device = [UIDevice currentDevice];
NSString  *currentDeviceId = [[device identifierForVendor]UUIDString];

NSData *imageData = UIImagePNGRepresentation(image);

NSString *sourcePath = [[info objectForKey:@"UIImagePickerControllerMediaURL"]relativePath];

NSString* public_id = [NSString stringWithFormat:@"currentDeviceID:%@/activityCategory:%@/time:/%@", currentDeviceId, activityCategory, time];

[uploader upload:data options:@{ @"public_id": public_id}];

[self dismissViewControllerAnimated:YES completion:nil];

}

The problem is that when i try to upload the MPMediaItem i get this error:
*** Terminating app due to uncaught exception 'CloudinaryError', reason: 'file number be either url, path to file or NSData' ***

When i try to to typecast the video which is of type MPMediaItem to NSData and upload it the error is:

** Upload error: Invalid image file, 400 **

So how can i upload video in iOS ?