How to share video from UIActivityViewController to Vimeo or Facebook using Swift

I am trying to share a video to Vimeo and Facebook. I can do it from the Library, but when I try to build it in code, it fails so much that I tried it.

  func showSheet() {
        let bundle = NSBundle.mainBundle()
        let videoURL:NSURL = NSURL.fileURLWithPath(self.outputUrl!)!
        //let asset:AVAsset = AVAsset.assetWithURL(videoURL) as AVAsset
        let asset:ALAsset = ALAsset.setVideoAtPath(videoURL)

        //NSString* path = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/image.mov"];
        //NSURL *videoURL = [NSURL fileURLWithPath:myFilePath];        
        let objectsToShare = [textToShare, asset]
        //let objectsToShare = [textToShare, videoURL]

        let activityVC = UIActivityViewController(activityItems: objectsToShare, applicationActivities: nil)
        activityVC.excludedActivityTypes = [UIActivityTypeAddToReadingList]
        self.presentViewController(activityVC, animated: true, completion: nil)

    }

      

        
        
        
      

    

As you can see from the comments, I've tried passing NSURL, AVAsset and, and ALAsset, the only thing that works is NSURL. I can send it via iMessage, but it doesn't work for Facebook. Also, Vimeo and YouTube never appear in the list, even though they do appear when I launch a sheet from the photo library. What am I doing wrong? By following the data grid at the bottom of this page , I should be able to transfer the asset.