File still in use although project is closed

[Meha]

Hi there, when I close a project in Shotcut, NOT closing Shotcut, and try to delete the files I used in the former closed project from the harddisk, Windows gives a message that the files are still in use by Shotcut. The only workaround is to quit Shotcut and start it again which is annoying.I feel.
Maybe You can solve this problem, thank you!

[Austin]

See:

File lock(release) on imported video files [Windows]

Choose close twice. The Shotcut engine does not try to keep every file in your project open because then it could run out of maximum file handles or use too much memory. It only keeps around 3*(number of tracks + 1). There are separate counters for A/V clips versus still images. It is not easy to predict as it is automatic based on N most recently accessed.

[Meha]

Thank You for the quick answer but it does not work. I closed the project several times but still can not delete the used file.