Hey all I modded my master system to have 50/60hz and composite video. It works great via composite however I want to use a av2hdmi so I can record gameplay.
Once I connect it to the console and to the tv via hdmi the picture goes to black and white. No idea why, it's not the av2hdmi box as it works with my original Xbox without any issue and my 360.
My megadrive also does the same as the master system, I'm assuming it's the consoles that are causing the issue.

Has anyone else had this issue? If so how did you fix it or anyone have any ideas, I'm happy to try anything.

Tldr: works fine through composite but is in black and white when using av2hdmi