It’s in the name. the X Jack video monitor.
It’s non-trivial software and not going to work with Windows. I want to add, it is a fantastic program and extremely usable and stable in linux.
It does exactly what you are suggesting. And does it perfectly. I use it with Ardour (DAW) for all fine audio edits in video. It’s perfect for scrubbing backward and forward and frame edits in audio once in picture lock.