[Fortuitous]

Regarding Ember / Plex options for movies split into parts or scenes, I see three general options:

• Use third-party tool to join parts
  • Problem solved
    
  • Joining can be a slow process, depending on tool
    
  • Best tools?
    
• Plex will "stack" multiple video files together for sequential playback if they follow a naming convention (name - pt1; name - pt2, etc.)
  • Not supported by all Plex clients (Fire stick has had problems)
    
  • AFAICT, the only way to access part 4 directly is to scrub to the end of part 1 and watch playback switch to part 2, scrub to the end of part 2 and watch playback switch to part 3, etc.  Not best.
    
• Use Ember to match each part (all to the same movie, or if possible to each scene) and put all the parts into a Plex collection
  • Plex collections are great.  Click on the collection tile to see all the collected items
    
  • Unfortunately, Plex does not support nested collections. 
    
  • So if you're already collecting five movies in a series, you can't have one of those movies also be a collection for it's own scenes. 
    

I guess I'm going to start merging.  Looking for merge-tool recommendations (Windows).  I tried Free Video Cutter Joiner which is pleasantly speedy, but seems a little buggy.  

Thanks, all.