I am trying to do a simple 2D track that will be used directly in the compositor to lock and mix a star field to a night shot. I have not found a specific node for this type of track but I did find a tutorial on youtube that explains a hack where you use the 2D stabilize menu in the tracker resolve tab and then use the offset data from the movie clip node with collection of maths nodes to extract a track.
22.45 mins into video
I have not got good results with this method even if the track points are locked. I am wondering if the maths is good.
Anyway, I can’t find anything on the web how to do tracks that are used directly in the compositor. I was wondering if anyone has a better method that the one above?