Video file only exports to photos app? - ios

Question

In my application, I allow the user to store a video that has been edited. I save it into the photos application and my document directory for debugging. However, the video only saves into the photos album and not my application and I do not know why. Here is what i'm doing:
- (void) mergeVideos{
//do some neat editing
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *tempPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:#"%#_%#_stacked.mov", [[self.firstVideo.videoURL lastPathComponent] stringByDeletingPathExtension], [[self.secondVideo.videoURL lastPathComponent]stringByDeletingPathExtension]]];
NSURL *url = [NSURL fileURLWithPath:tempPath];
AVAssetExportSession *exporter = [[AVAssetExportSession alloc] initWithAsset:mixComposition presetName:AVAssetExportPresetMediumQuality];
exporter.outputURL=url;
[exporter setVideoComposition:MainCompositionInst];
exporter.outputFileType = AVFileTypeQuickTimeMovie;
NSLog(#"EXPORT PATH IS %#",exporter.outputURL);
[exporter exportAsynchronouslyWithCompletionHandler:^
{
dispatch_async(dispatch_get_main_queue(), ^{
[self exportDidFinish:exporter];
});
}];
}
- (void)exportDidFinish:(AVAssetExportSession*)session
{
NSURL *outputURL = session.outputURL;
//NSLog(#"OUTPUT URL: %#",outputURL);
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
if ([library videoAtPathIsCompatibleWithSavedPhotosAlbum:outputURL]) {
[library writeVideoAtPathToSavedPhotosAlbum:outputURL
completionBlock:^(NSURL *assetURL, NSError *error){
dispatch_async(dispatch_get_main_queue(), ^{
if (error) {
NSLog(#"writeVideoToAssetsLibrary failed. Error: %#", error);
}else{
AppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
_managedObjectContext = [appDelegate managedObjectContext];
Video *video = [NSEntityDescription insertNewObjectForEntityForName:#"Video" inManagedObjectContext:_managedObjectContext];
[video setVideoURL:[NSString stringWithFormat:#"%#",outputURL]];
NSError *error = nil;
if (![_managedObjectContext save:&error]) {
}
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"ALERT" message:#"SUCCESS" delegate:self cancelButtonTitle:nil otherButtonTitles:#"OK", nil];
[alert show];
NSLog(#"Successfully written!");
}
});
}];
}
}