How to fix DVD discs being tainted in green when read on the PS2

This is a protection to prevent copying DVD discs to VGS using the RGB output.
The PS2 in that case outputs composite (which has no "sync" output).

In order to fix it, use the PS2 DVD player mod by krHACKen and follow these steps.

1. Download:

• The archive containing the patched DVD players from ** (google it 🤡)
• KELF Twin Signer from https://www.psx-place.com/attachments/140202-kelftwinsigner-bin-7z.18717/

2. Plug a USB stick into the PS2

3. Copy your FMCB' binary (mc0://BEEXEC-SYSTEM/osdmain.elf) onto the USB stick

4. Plug the USB stick into the computer

5. Extract PS2 DVD Players\MC\With Progressive Hack\3.11J\Europe\English\ from the archive donwloaded previously on the USB stick

6. Open a shell (I use Git Bash)

7. Assuming that the USB stick's path is /i/, run ./KelfTwinSigner.exe /i/osdmain.elf /i/BEEXEC-DVDPLAYER/dvdplayer.elf.
   dvdplayer.elf is now signed using your FMCB binary.

8. Now plug the stick back into the PS2

9. Copy mass0://BEEXEC-DVDPLAYER/ to mc0://.

10. Reboot your PS2 with the DVD disc inside.

Note: you can't launch dvdplayer.elf with uLE, as it doesn't recognize KELF files.