[Modding] Adding custom loading screen - salutesh/DayZ-Expansion-Scripts GitHub Wiki
Source Code
https://github.com/salutesh/Community-Loading-Screen
Converting your image to edds
Use Workbench (from dayz tools) to convert .tga (or .paa) files to .edds. Simply add the .tga files to the dir you wish, right click, and "Register Resource and import"