New folder in CA directory

I was just wondering if anyone knows what the new folder in CA is. Its a folder called movies.
Its is a file type called .bik and i cant find an encoder to open the file type. But I was wondering if anyone knows what are in these files?

Are they actual movies of recorded game play? or what?
I have 3 files, does anyone else have these files?

You should probably google it.

They are the nexon opening, you know, the one when you log into combat arms and it has that nexon explosion ma jig. In other words, the little "movie" before the game loads. Oh and just to let you know, if you move the folder out of the nexon folder, your game would load the "movie" anymore and you will be able to go into combat arms alot faster.