While its a hot topic atm, cause of the actuall decryption of .dat files, I wanted you devs and interested out there to know that the GT Concept Replay Movies stored on the harddisk (when you export them) are in the following filestructere:
2 x PNG Pics (GT Logo)
Maybe interesting for further process when it is possible to inject codes into the decrypted files and a loading through the backup/restore method will fail. (What I dont hope )
Unfortunally I dont have a copy of Gt Conecpt at home, so I hope someone out there can post the above listed files for testing, if needed.
At the end let us all hope that the work of Giulio19992 and his team will end up in the first "Hello World" for our sweet ps3 machines.