Hammer Editor: Dynamic/Map Background (Tutorial)

How to make a Dynamic/Map Background (Video)

So in this tutorial I'm going to show you how to make a Dynamic Background or a Menu Background Map.

A Quick note: Background maps are the 3D moving backgrounds that appear behind the menus when the game is first launched. They are compiled BSPs, just like standard game maps. Background maps are designed to be used for single player games like Half-Life 2, although any mod can use them. The background map can change as the player unlocks chapters of the game, depending on the author's preferences. - Valve

The tools which we are using in the tutorial:
Photoshop CS5 or whatever you have to edit your scteenshots/images with
Download link: adobe.com/cfusion/tdrc/index.cfm?product=photos… (Trial)

VTFedit: Download link: interlopers.net/downloads/files/vtfedit124-11.e…

and of course Hammer Editor, to make the map...

Good luck!

Here is the stuff for the vmt file

"UnlitGeneric"
{
"$basetexture" "console/background01"
"$vertexcolor" 1
"$vertexalpha" 1
"$ignorez" 1
"$no_fullbright" "1"
"$nolod" "1"
}