Powershell developer to capture screenshot on the windows 10

1) Take a screen shot as shown in the attachment, only the rectangle part should be taken as screenshot remaining part of image should come as opaque image. We are trying to reduce image size. 2) take screen shot on mouse click event, tab click, enter click and for any key stroke screen shot should be taken. 3) screen shot should be taken at a particular location (capture co-ords) where user clicked on the desktop and that rectangle should be captured as part of rectangle as shown in attachement. 4) create a video out of all the images.