I have tried many times and many versions of shotcut to reverse and extract sub-clips. It does not work.
For reverse, all it does is say that the job is complete, but when I click open, it says "failed to open “…”. I go and right click and select open in folder, and all it does is open windows explorer and highlight the My Documents folder. I even opened the same folder in a separate window and rapidly hit the refresh button to see what comes up. It creates a random file with the same name for a tenth of a second, then deletes it.
For the extract, it will show the Documents folder as said above, and fail to open as well, I also go into the folder I specified it to save it to, and all I get is an audio file that is labeled as an “MP4” file. It does say the job is complete.