How to use any background you want in Main Menu
- Choose any picture or video you want.
- Convert it to "WEBM" format. (Google jpeg to webm online)
- Rename 3 copies of the webm file to:
- nuke
- nuke540p
- nuke 720p
- C:\Program Files (x86)\Steam\steamapps\common\Counter-Strike Global Offensive\csgo\panorama\videos