How to create a Video ghosting effect

Simply playing with an offset isn’t what I need.
I need to freeze a frame every say, 1 second for .5 secs that’s .2 secs behind the current frame at the time I freeze the frame.

EX:
Play time is 2 secs.
Freeze at 1.8 for .5 secs
Freeze at 2.8 for .5 then 3.8 for .5, etc etc etc etc.