I have this .DIG file from a PS2 game:
https://drive.google.com/open?id=0B8-7FMP3lW8cU3NqUmNUcWdhcEk
Apparently, it should contain most of the game data, except cutscene movies and voiceovers, which are stored in different files. I could identify and extract audio with the IECS header from it. But how do I extract the rest? I'm particularly interested in textures, and above all, the dialogue files.