VLC is an open source media player that is
famous for its stability and compatibility with almost all of
the media files such as MPEG2, MPEG3, MPEG4, OGG,
DivX and more. Besides being used as simple media
player, it also can serve as a media server to stream
both unicast and multicast in digital home. To make it
more useful for daily application, there is a simple
step on how to enable VLC to display in full
screen mode by default once you launch the
application.

Follow below steps to enable full screen as default display mode:
1. Open VLC Media Player.
2. Go to the Menu -> Tools ->Preferences.
3. On the Preferences window, click Video button.
4. Check the Fullscreen checkbox on the General Video Settings.
5. Click Save button
1. Open VLC Media Player.
2. Go to the Menu -> Tools ->Preferences.
3. On the Preferences window, click Video button.
4. Check the Fullscreen checkbox on the General Video Settings.
5. Click Save button
Once above steps are done, you will be able to get
the full screen mode which is especially useful
when you are relying on your limited size monitor
screen to view HD (High Definition) media streaming
from central office directly.