I have seen the issue with connecting video within the User actors.. I am going to write up a bug report.
My FIX was to go into the user actor for the Projector, and double click the user Input for the video, setting it specifically to vid-GPU
(match property is not working, probably due to the mutability of those connections)
That allowed me to connect the vid-GPU output of the FFGL to the projector (user actor).
Something to remember here is that the Projectors video input is mutable. Meaning it will adjust to whatever type is connected to it.
( this page talks a bit about mutable connections: http://troikatronix.com/support/kb/izzy20-playback/ )
This is great and very handly, **BUT**, mutability does NOT transfer thru User Actor inputs and outputs.
These connections need to be decided on in the design of your user actor.
[
@mark please correct me if I am mistaken ]