I use a lot Resilio Sync. If you have share on selective sync you get placeholder files. It would be cool, if Infuse would recognize them and show them as kind of cloud files. I don’t need a mechanism to automatically sync them, but I like to see them in Infuse. 
The files will look like this:
file.mkv.rslsv
Non video files for completeness:
file.mp3.rslsa file.png.rslsi file.other.rsls