In image capture, one can start capture and select the area to capture.
When pressing Ctrl-Shift-R, capture occurs without allowing you to manipulate the previously selected area.
In video capture, it always displays the area which you may modify.
For videos, you need to save the previous selected area, to display for next time to recapture the same area. Currently it redisplays the default area.
For images, you may use the same technique but allow for preserving the last selected area.