In order to save my “Comped” layers to file, I needed to add a FileMediaOutput to the output settings in my comp layer property details. In my case this object is called “0010_comp” - the default name when you make a new comp in Composure.
I then needed to make sure I opened the FileMeidaOutput asset and set all the parameters, even the greyed out ones. Previously the x and y parameters where already set and looked correct, but they were greyed out. Simply manually typing these back in seemed to do the trick.
I then noticed it worked when I “played” my project but… when I stopped the playback, it switches off the object in the Output settings. So the “Enabled” tick-box gets switched off. This makes sense unless you don’t know about it. So presumably I just need to script this to be enabled every time I Play my project, or just enable it manually each time.
My project now saves the composited image (blackmagic green screen feed + CGI scene) to file. Joy!
Now I just need to stop my vive tracker juddering and work out how to fix the lag between the blackmagic feed and the moving camera in my scene - controlled by LiveLink. Messing around with the LiveLink Buffer and Offset values, but this doesn’t seem to be very scientific.
They don’t make it easy… Hope this helps someone else. Any advice welcome…