The retime tracker is meant to be used with the 'go to frame' script.
What it is for:
When looking at the source through retime nodes, this script lets you jump to the original source frame on the timeline, so that you can view that same frame on the non retimed material and continue working there.
How it works:
- Copy and paste one or multiple retimes between the 'frames_to_pixelvalue' node and the 'retime tracker' node.
- Click analyze in the 'retime tracker' node.
- To jump to the non retimed frame, select either one of the labeled retime nodes or the retimeTracker itself and press shift+f.