Vertical Screen ES - perfect MAME - not so much

StuDev

Hi,
Im a bit new to this and this forum has been fantastic help. I've fixed audio issues, which EmulationStation to vertical. But this last one - even though I find lots of posts I cant seem to figure out.
Im setting up a simple Ikea, cocktail table 80s arcade for the kids - Only using vertical games like DonkeyKong , Space Invaders, Scramble etc.
Im really struggling to get MAME to run vertical taking up a "semi-correct looking" amount of screen space. I'm not looking to match originals just something that looks right and is playable.

Ive done the :-
video_allow_rotate = true
video_rotation = 3
This give me the first picture attached.

I then found on the forums about using aspect ratio so I tried (see second pic):-
aspect_ratio_index = "19"
video_aspect_ratio_auto = false
video_aspect_ratio = 0.75

This gets the height correct BUT the horizontal is way off.
If I tweek nothing seems to change too much. My display is an old dell 12" 1024x768 (or 768x1024 as its not verticle)

Pi Model or other hardware: 3B+
Power Supply used: errrr came with it
RetroPie Version Used 4.6:
Built From:(Pre made SD Image on RetroPie website
USB Devices connected: Arcade Joysticks (2), Keyboard
Controller used: Arcade joystick and buttons from amazon
Connection to screen: HDMI

Emulation Station look fine:-

dankcushions

@StuDev said in Vertical Screen ES - perfect MAME - not so much:

aspect_ratio_index = "19"
video_aspect_ratio_auto = false
video_aspect_ratio = 0.75

this doesn't make sense to me. you shouldn't need to change the aspect ratio - the aspect ratio should be the same no matter what screen you use. i would remove above settings.

please remove, then fill out https://retropie.org.uk/forum/topic/3/read-this-first (be mindful to include the verbose log)

StuDev

This post is deleted!

StuDev

@dankcushions thanks for the reply - that is what I did in the first screen shot and as you can see its squashed on the vertical but full horizontal.
I did
video_allow_rotate = true
video_rotation = 3

and it came out as

dankcushions

@StuDev right, i understand that, i just wanted it back to a sane config so we can fix the underlying issue - please provide verbose log and all the other stuff as requested.

StuDev

@dankcushions thanks mate - i did see the comment on the verbose logs.
In learning about how to trigger them and retrieve them, I went into the RetroPie configuration editor and then notice there was an Aspec ratio setting. I set this to 4:3 and everything is perfect now.

Glad Im solved it and thanks for your time.

Excellent forum by the way

So you were right I only need the rotation part and then needed to set the aspec ratio.
video_allow_rotate = true
video_rotation = 3

This was the magic line:-
aspect_ratio_index = "0"