No, you got it reversed.
I’m sending video from Resolume into Serato Video. Serato Video does not have built-in Syphon support, but it does support Quartz Compositions which is why I’m using a quartz Syphon client.
So in a nutshell, I load the “SyphonClient.qtz” file into Serato Video and it pulls the video in from Resolume’s Syphon output.