@mitu Thank you for your response and help.

Setting the Retroarch system settings for video aspect ratio within the EmulationStation Retropie configuration menu, worked perfectly and saves the settings for all cores.

Now when I open a game, in any core, I am able to "Save Core Preset" as well as "Save Game Preset" for an individual game within a core that already has a shader saved for that core. Brilliant!

Everything seems to be working now.

Just to better explain what I am doing with the system. I have a cocktail table that is used for 2-player alternating and simultaneous games.

I use the Arcade folder and lr-mame2003 core for Cocktail specific MAME ROMs that have the Cocktail option in the ROM “Dip Switches” for 2-player alternating games. Primary player has a turn and then the screen flips and the secondary player has a turn.

I then use the FBA folder and lr-fbneo for other MAME ROMs for 2-player simultaneous game play using a “Split Screen” Shader. The split screen shader allows both players to have their own screen (within the single monitor) for simultaneous play. I have three different “Split Screen” Shader files that I have to use because not all ROMs setup the same. I save one “Split Screen” Shader to the core that’s takes care of the bulk of the games and then I have to use one of the other two shaders to save for individual games that seem to setup differently than the bulk of them.

I save a custom shader to the core as well as individual games within the same core…

Cheers

Nevermind, I just chose to manually change the settings for each emulator I was using and save those core overrides. I also discovered with this guide using nginx you can send the feed to a server and then add your webcam & mic! https://www.reddit.com/r/RetroPie/comments/gz1fn6/retropie_twitch_streaming_with_webcam_and/

Not sure why you're using an old image instead of a recent one (4.5 should have been available 6 months ago), but you don't need to configure the 2nd player if you already have configured P1 - their configuration should be identical if you're using just 1 encoder. If you configured P1 through EmulationStation, the auto-configuration files should be already present.

@thedavegray it should be the Button you configured as "a".
It takes some time after you pressed it, the mapping is saved and that takes some seconds.

same here,, i have to set my mouse an every single game :/

@harrycool25 We don't support 3rd party images - why don't you ask your friend ?

I would be curious did it swap the first time? I have never tried to change it back to the default after swapping. I wonder if you would need to run configure input again after resetting to defaults.

@backstander Nice. :)

Now all I have to do is get my Pi back to where it was before I broke Sudoers and see if I can actually get the retroarch.cfg files to save and work properly. Almost forgot that's what this thread was originally about.