title: Post Video to Facebook with swift SDK
body: <p>I have been trying to figure this out all day and yesterday night, but no luck. I can confirm that the LinkShareContent works but when I try to share a video file. It gives me an error code "reserved" but nothing else.</p>
  
  <p>This is the code for the link </p>
  
  <pre><code>var content = LinkShareContent(url: URL(string: "https://google.com")!)
  showShareDialog(content)
  </code></pre>
  
  <p>and this is the code for the video that does not work at all.</p>
  
  <pre><code> let video = Video(url: url)
   var content = VideoShareContent(video: video, previewPhoto: Photo(image: inProgressItem.firstImage, userGenerated: true))
   showShareDialog(content)
  </code></pre>
  
  <p>This will show the share Sheet on the controller </p>
  
  <pre><code>  Func showShareDialog&lt;C: ContentProtocol&gt;(_ content: C, mode: ShareDialogMode = .shareSheet) {
          let dialog = ShareDialog(content: content)
          dialog.presentingViewController = self
          dialog.mode = mode
  
          do{
              try dialog.show()
          }
          catch (let error){
              print(error)
          }
      }
  </code></pre>
  
  <p>I have confirmed that the video is on the local path and I'm testing the app on iPhone 8 11.1.2</p>