Quote: "Hello, i've seen recently someone talking about something called "video textures", what is this ?
A video used as an animated texture ?
If yes, how to use those & what version handles this feature ?"
The "video texture" technique allows you to load a video as a texture and have it applied to the entity. It was introduced in FPSC v1.20 (r645).
An example- to show off something we played around with is a television using this feature in our source. When you watch the video, you will notice that we have different "channels". Each channel is a separate video and the script loads each called video and is attached to the entity. I can "change" the channel via "scancodekey" I've assigned in the script.
We have taken this even further. My wife has animated the SciFi AI characters so the center of their chest is "animated". I've taken Cosmic's TOS kit he released and animated the bridge, including having the main view screen show when you are warping, and even have a space battle in the works. The sky is the limit with this feature.

There's no problem that can't be solved without applying a little scripting.