Sv: Image superposition on a video sequence is creating problem

There is one more problem : if I use break, the program hangs and I have
to physically kill it using “kill” and CTRL-C does not work. However, if
I use ‘exit’ instead of ‘break’, then the program terminates properly.
However, for my purpose, I would like to use break. Any suggestion here?

Are you cleaning up properly before you exit your main function? If not, it is pretty obvious why the program hangs!

Regards
Anders