A useful feature

I am compiling videos from a mass of old stock. The obvious intent is to move forward and create viewable and interesting material. However in the end looking backwards on the effort. It would be very helpful to be able to use the collected material to go back and sort out the roots of these videos and thus clean out the original files from related but unusable stock. It is almost possible by looking at the original addresses of the clips but it is cumbersome and slow. It would be nice to have a way of retrieving them and putting them into a file.

Say what now?

Are you not thinking of Media Management?
There is a tool for that.