Help with analog video adjustment on raspberry pi 5 with retropie installed on top of pi os
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@parkerestes said in Help with analog video adjustment on raspberry pi 5 with retropie installed on top of pi os:
How would I modify the line that you gave me to output 480p anyway?
There isn't a way, the composite output cannot do 480p. But, as I said, do you have a PC monitor for 480p ? A consumer CRT would not support it, but you can use something like VGA666 (a HAT) to connect a PC monitor via VGA.
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@mitu I am limited to the display that I have which is a large commercial tube television.
All I know is that when I set my pi 4b and 3 to progressive scan (i.e. sdtv_mode=16, which as I understand is NTSC progressive scan) the image is considerably less flickery than it is when I set sdtv_mode=1 (which is standard NTSC) on the same display.
You say it there is no progressive scan mode via editing the cmdline.txt file. Is there a way to achieve 240p? I have fixed the overscan issue thanks to your help, but the image is still offputtingly flickery and even large text is quite difficult to read. And this is a large CRT 30ish inches.
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@parkerestes said in Help with analog video adjustment on raspberry pi 5 with retropie installed on top of pi os:
You say it there is no progressive scan mode via editing the cmdline.txt file.
No, I said there's no 480p for Composite, since there's no TV standard for that.
Is there a way to achieve 240p?
Yes, specify the video mode in the
videoparameter of the command line, instead of an interlaced mode, use a 240p mode (720x240@60em). -
@mitu Thank you, I will try this when I am back at my studio and let you know how it goes.
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Reading through this topic it seems that the
marginparameters don't seem to work with Pi5's RP1 chip. So the over/underscan options will not work. -
@mitu I have tried 720x240 at 60em and the flickering is completely gone. You are correct that the overscan doesn't seem to do anything. Unfortunately everything in emulation station is squished horizontally. I am searching everywhere for a solution.
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@mitu I was able to solve the resolution issue by setting the resolution in cmdline.txt to 320x240, but unfortunately the image jitter is back.
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@parkerestes said in Help with analog video adjustment on raspberry pi 5 with retropie installed on top of pi os:
Unfortunately everything in emulation station is squished horizontally.
Yes, of course since it's running at 240p resolution. Ideally though, this is the resolution you want to be using during emulation, but not when using EmulationStation.
Are you sure that what you call 'jittery' is not just the interlaced image (480i) ?
I am searching everywhere for a solution.
You can use a Pi4 or perhaps a DPI/HAT that supports margin adjustments, though the configuration for HAT may involve using a specialized distro for it.
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@mitu This may be starting to go over my head a little. Wouldn't 320x240 be 240p. Why would that produce an interlaced image?
I can independently set the resolution in retroarch and it looks really great when in games (in the 720x240 configuration) but because this will be interacted with by strangers in a gallery setting, i need the ui to be very usable. There is no way to independently set the resolution of emulation station so that it looks as good as the games do?
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@parkerestes said in Help with analog video adjustment on raspberry pi 5 with retropie installed on top of pi os:
I can independently set the resolution in retroarch and it looks really great when in games (in the 720x240 configuration) but because this will be interacted with by strangers in a gallery setting, i need the ui to be very usable.
Hm, what does this mean ? How do you intend to use the Raspberry Pi ?
There is no way to independently set the resolution of emulation station so that it looks as good as the games do?
Using composite, not so much since your only options are either a progressive mode (288p / 240p) or intelaced mode (480i/576i).
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@mitu seems like I may have to settle for a middle ground then. Yes it is an interlaced image. I hate that There is no way to independently control the resolution on emulation station. Thank you for all of your assistance.
I may continue to tinker with adjusting the resolution.
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