Ensure ParentId has a value before changing res
Ensure ParentId has a value before changing res

Should eliminate backdrop videos.

TomGillen/MediaBrowser.Theater,TomGillen/MediaBrowser.Theater,MediaBrowser/Emby.Theater,thogil/MediaBrowser.Theater,MediaBrowser/Emby.Theater,MediaBrowser/Emby.Theater,thogil/MediaBrowser.Theater,thogil/MediaBrowser.Theater,TomGillen/MediaBrowser.Theater