As luck would ahve it im currently workin on a VCam off my own. It fully supports every type of transform, and dosnt use no estimations, and isnt buggy. What the camera sees is what it gets.
Also it comes with a virtual stage, you can choose where the stage is, and its size. You also free to add any transform to the stage.
You can animate both the virtual stage and cam.
Hopefully ill get a release out eitehr tonight or 2morrow.