Windows Media Player is helpful way to watch videos. Based on resolution of source video, you want to increase or decrease amount of space that it takes up on screen. This can be achieved by steps given below.

Instructions

Step 1

Go to "Start", select "All Programs," and then go to Windows Media Player.

Step 3

Open library and choose video, then click "Play" button.

Step 4

Right tick on video window and give size of window either in "Video Size" menu or by choosing "Full Screen." On other hand, go to "View" menu and go to "Full Screen" or "Video Size" from there.