I use VLC by videolan as it doesn’t require codecs. It has new freature of having volume controls, play speed..etc..in full screen mode. I have lost them for no reason(I think).

They disappeared once earlier and tried to get them looking through Tools > Preferences. no luck.

There are two solutions to it.

1) Tools > Preferences> Interface tab> under ‘Interface type’ select option: ‘Show a controller in fullscreen’

2)Manual Edit:

a) Goto location:

XP users: C:\Documents and Settings\[ur_username]\Application Data\vlc

Vista users: C:\Users\Raj\AppData\Roaming\vlc

 Note: IF you are not seeing application data, its because your folder options are not configured to show Hidden files. To correct this, go to Tools>Folder Options>View Tab>under Hide Hidden Files and Folders, choose Show Hidden Files & Folders. Hit Ok.
b) In the VLC Folder, locate the vlc-qt-interface file. Double-click it/ Open with Notepad.
c) Once you have the vlc-qt-interface opened, you’ll notice its a pretty small string of text for configuration settings

The whole thing looks like this:
—————————————————————————–
[General]
updatedate=@Variant(\xe%u\x99)

[MainWindow]
pl-dock-status=33590275
playlist-visible=0
adv-controls=2
backgroundSize=@Size(720 156)
geometry=@ByteArray(\x1\xd9\xd0\xcb\x1\x2\xa1\x1\x42\x5x\x3\xe\x2\xa5\x1j\x5t\x3\n)

[FullScreen]
pos=@Point(678 1016)

[Update]
geometry=@ByteArray(\x1\xd9\xd0\xcb\x1\x3&\x1`\x4Y\x2\xb7\x3*\x1\x88\x4U\x2\xb3)

————————————————-
4) Locate [FullScreen]
change the setting for pos=@Point(678 1016)
The first number represents the X value and second represents the y value.

For me (on a 1920 x 1020 resolution), pos=@Point(682 1012)
seemed to be near center.

It worked for me. I’m sure it works for you too. Original article is from VLC Forums. Read Here