i have had some trouble getting WIndows 10, Resolume Arena 5 DXV codec to show up in adobe products or to MPEG_Streamclip. It seems that i have not been the only one. I spent some time poking around the forums and i found a lot of solutions, just not all in one spot. So Here is my low effort tutorial of the more basic things to try.
Resolume Arena 5 installed and DXV codec not showing up in Windows (10)
Then Check to see if the file association of the *.mov file is with QuickTime under settings system default programs sort by file type. Find *.mov choose QuickTime for program type
Look in the QuickTime default location of C:\program files(x86)\Quicktime\QTsystem
Is dxv there? If not reinstall the driver only or reinstall Resolume arena 5.
Enable legacy codecs in QuickTime
Uninstall QuickTime
Reinstall version 7.7.9 QuickTime
A combination of any of these could work. That is all I could find in many different locations.
There also has been some success with installing iTunes (you don’t have to use it)
I don't profess to be an expert in resolume and windows, but having all this in one spot will help the frustration level when creating files with the DXV codec