OSSC Pro

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jaffa225man
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Re: OSSC Pro

Post by jaffa225man »

Trevor spencer wrote: Wed Apr 09, 2025 9:38 am So would you be able to downscale PS4 shot trigger releases to a arcade monitor or CRT TV with this , HDMI in 1080p to 240p out RGBHV with the add on.

Also do the PS4 games have a proper tate mode.

Thanks
Since the OSSC Pro can do downscaling, I think so, but I haven't tried it with the PS4, let alone re-released games from M2. As for a rotated retro CRT, it may be up to each game's programming, but at least Battle Garegga seems like it should: viewtopic.php?p=1228860#p1228860:
縦画面レトロモニター(左回転): Vertical, retro monitor (left rotate)
This sounds like the remake's screen real estate placeholder stats are removed and you'd be rotating the monitor manually, but I could be wrong as I don't have the game to try.

The OSSC Pro doesn't support changing rotation itself yet, although it's a planned feature of course.
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LDigital
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Re: OSSC Pro

Post by LDigital »

Trevor spencer wrote: Wed Apr 09, 2025 9:38 am So would you be able to downscale PS4 shot trigger releases to a arcade monitor or CRT TV with this , HDMI in 1080p to 240p out RGBHV with the add on.

Also do the PS4 games have a proper tate mode.

Thanks
Yes, I have my ps5 connected via a hdmi selector switch. One to the tv and one to my Ossc pro. I play Ketsui on my tate bvm in crisp 240p.

You can rotate the game in menu and scale the image pixel perfect. Reach out if you want more info, I do the same on my Nintendo switch for Mushihimesama DDP and espgaluda
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Trevor spencer
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Re: OSSC Pro

Post by Trevor spencer »

LDigital wrote: Wed Apr 16, 2025 6:25 pm
Trevor spencer wrote: Wed Apr 09, 2025 9:38 am So would you be able to downscale PS4 shot trigger releases to a arcade monitor or CRT TV with this , HDMI in 1080p to 240p out RGBHV with the add on.

Also do the PS4 games have a proper tate mode.

Thanks
Yes, I have my ps5 connected via a hdmi selector switch. One to the tv and one to my Ossc pro. I play Ketsui on my tate bvm in crisp 240p.

You can rotate the game in menu and scale the image pixel perfect. Reach out if you want more info, I do the same on my Nintendo switch for Mushihimesama DDP and espgaluda
This sounds great , time to save up for an OSSC Pro then .. Thanks guys
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Zacabeb
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Re: OSSC Pro

Post by Zacabeb »

A question about the sync length parameter which is hidden in profiles on the OSSC Pro; does it do more than make sure that the active area cannot intrude on the sync period?

I've made a spreadsheet to decode, modify, and re-encode the HEX values for profiles and just set the horizontal sync length parameter to correspond to 4.7 µs or 2.35 µs as needed, but knowing how much that matters in practice can be useful. :)
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marqs
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Re: OSSC Pro

Post by marqs »

Zacabeb wrote: Thu Apr 17, 2025 6:58 pm A question about the sync length parameter which is hidden in profiles on the OSSC Pro; does it do more than make sure that the active area cannot intrude on the sync period?

I've made a spreadsheet to decode, modify, and re-encode the HEX values for profiles and just set the horizontal sync length parameter to correspond to 4.7 µs or 2.35 µs as needed, but knowing how much that matters in practice can be useful. :)
Sync length is mainly relevant in output presets when used with analog output. For sampling presets it does not really matter except in A-LM when it selects a preset without a common group (currently PC modes 800x600 and higher) and copies its timings to output timings.
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Trevor spencer
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Re: OSSC Pro

Post by Trevor spencer »

Any ideas when the Extra AV Out for OSSC Pro and AV input/output adapter will be available? Want to get this in my Astro City for PS4 Shot Trigger Games.

Thanks
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marqs
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Re: OSSC Pro

Post by marqs »

Trevor spencer wrote: Mon Apr 21, 2025 9:17 pm Any ideas when the Extra AV Out for OSSC Pro and AV input/output adapter will be available? Want to get this in my Astro City for PS4 Shot Trigger Games.
I believe lead time for Extra AV Out cards is relatively short (max. 1 month) while AV I/O adapters need SCART connector which are not as easy to source nowadays (TME should have them restocked on week 21).
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Trevor spencer
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Re: OSSC Pro

Post by Trevor spencer »

Ok great, thanks :)
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traka-ar
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Re: OSSC Pro

Post by traka-ar »

marqs is it possible to add HDMI-CEC support? Would be great to have OSSC turn on when TV does
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marqs
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Re: OSSC Pro

Post by marqs »

traka-ar wrote: Sun Jun 01, 2025 3:26 am marqs is it possible to add HDMI-CEC support? Would be great to have OSSC turn on when TV does
Depends if I manage to find CEC programming manual for the HDMI transmitter chip somewhere. It's quite frustrating being forced to use chips from manufacturers that provide little or no information/manuals without NDA. That also applies to the RF tuner chip which took lots of time & some reverse engineering to get working. Got that done in the end unlike another unlucky engineer trying the same elsewhere, but I can't say it was time well spent (and the PCB is pending another redesign with metal RF shield which hopefully resolves remaining noise issues).
.
jaffa225man
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Re: OSSC Pro

Post by jaffa225man »

As one of the people championing your efforts to add the RF connector, I'm sorry it wasted so much of your time, but am glad to hear that you've succeeded where others couldn't. It's sad that such a common older technology never became freely understood with hobbyist documentation, or that older documented ICs have no modern compatible replacements still being made.

Anyway, I wish you all the best and hope something will have made it a worthwhile experience in the end.
traka-ar
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Re: OSSC Pro

Post by traka-ar »

marqs wrote: Fri Jun 06, 2025 3:47 pm
traka-ar wrote: Sun Jun 01, 2025 3:26 am marqs is it possible to add HDMI-CEC support? Would be great to have OSSC turn on when TV does
Depends if I manage to find CEC programming manual for the HDMI transmitter chip somewhere. It's quite frustrating being forced to use chips from manufacturers that provide little or no information/manuals without NDA. That also applies to the RF tuner chip which took lots of time & some reverse engineering to get working. Got that done in the end unlike another unlucky engineer trying the same elsewhere, but I can't say it was time well spent (and the PCB is pending another redesign with metal RF shield which hopefully resolves remaining noise issues).
.
Cool. Will keep an eye on this. Thanks for the consideration
tyro_2004_2004
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Re: OSSC Pro

Post by tyro_2004_2004 »

HLG On or Off ? What do you guys use?

Currently Playing Sega Saturn 1920x1200 x5line and 2569x1440 x6line
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Kretinou
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Re: OSSC Pro

Post by Kretinou »

Hi, there. I have a strange question. Is it possible to switch a 240p composite image to 240p rgb (crt 15 khz) with OSSC pro?

Edit : my bad, composite video and S-Video are NOT natively supported and require an adapter/transcoder or expansion card :cry:
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LDigital
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Re: OSSC Pro

Post by LDigital »

tyro_2004_2004 wrote: Mon Jun 16, 2025 9:09 pm HLG On or Off ? What do you guys use?

Currently Playing Sega Saturn 1920x1200 x5line and 2569x1440 x6line
If you are playing on a modern panel with scanlines or shadowmasks I would highly recommend HLG on to keep the image bright and punchy
jaffa225man
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Re: OSSC Pro

Post by jaffa225man »

Kretinou wrote: Wed Jun 25, 2025 3:59 pm Hi, there. I have a strange question. Is it possible to switch a 240p composite image to 240p rgb (crt 15 khz) with OSSC pro?

Edit : my bad, composite video and S-Video are NOT natively supported and require an adapter/transcoder or expansion card :cry:
Correct. If I wanted to do that, I'd probably use the Koryuu for input, and the OSSC Pro's Extra AV Out expansion board to its SCART adapter board for output. That's probably overkill, though, for composite and other inexpensive options must exist.
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Zacabeb
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Re: OSSC Pro

Post by Zacabeb »

Kretinou wrote: Wed Jun 25, 2025 3:59 pm Hi, there. I have a strange question. Is it possible to switch a 240p composite image to 240p rgb (crt 15 khz) with OSSC pro?

Edit : my bad, composite video and S-Video are NOT natively supported and require an adapter/transcoder or expansion card :cry:
This might be a late response, but I hope it can help.

What is the make and model of the CRT display you want to connect things to, and what inputs does it have?

If it lacks composite input, since you just want to convert the signal type and not deinterlace/rescale, a Koryuu transcoder could work if paired with an active, preferably analog YPbPr to RGBS converter.

If your display already has composite in and you want better separation of luma and chroma, the options depend on whether the display already has a comb filter and how good it is. Some older, analog adaptive combfilters can still hold up well against the simple comb filters used in low-cost video decoders like the ADV7280 used in the Koryuu. The digital comb filters used in later CRT displays may be better still, depending on their design.

However, some comb filters don't know how to adapt to nonstandard signals like those from games consoles. There the Koryuu has documented behavior about how it behaves with different sources.
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cr4zymanz0r
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Re: OSSC Pro

Post by cr4zymanz0r »

1.) So is there actually any US supplier to buy the OSSC Pro from? I only see a product page on Stone Age Gamer, but it's out of stock. The only other place I see to buy it at all is from Video Game Perfection but that's not in the US and with currency conversion and high shipping that brings the cost up a good bit.

2.) I see that the power supply the OSSC Pro comes with is 2.5A. Would 2.4A still be fine? To simplify plugs in my setup I have an Anker USB A power power station with multiple ports for 5V powered devices in my setup, but the ports only go up to 2.4A.
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marqs
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Re: OSSC Pro

Post by marqs »

cr4zymanz0r wrote: Tue Jul 15, 2025 9:48 pm 1.) So is there actually any US supplier to buy the OSSC Pro from? I only see a product page on Stone Age Gamer, but it's out of stock. The only other place I see to buy it at all is from Video Game Perfection but that's not in the US and with currency conversion and high shipping that brings the cost up a good bit.
1. A small quantity from the next batch (currently being manufactured) may be allocated to Stone Age Gamer, but considering recent developments on tariffs and challenges to maintain/reduce manufacturing costs, it cannot be guaranteed.
2. Yeah, there is some margin especially if you're not using an expansion card and USB port at the same time.

There is also a small update regarding availability of Legacy AV board with RF: a final PCB revision is nearly finished and a batch of 10pcs will be ordered in 1-2 months. It includes changes that hopefully mitigate the noise coupling (both via ground plane and air as EMI) on earlier prototypes. Whatever is the end result, I won't be pouring more time and money into its development anymore.
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Zacabeb
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Re: OSSC Pro

Post by Zacabeb »

marqs wrote: Tue Jul 15, 2025 10:51 pmThere is also a small update regarding availability of Legacy AV board with RF: a final PCB revision is nearly finished and a batch of 10pcs will be ordered in 1-2 months. It includes changes that hopefully mitigate the noise coupling (both via ground plane and air as EMI) on earlier prototypes. Whatever is the end result, I won't be pouring more time and money into its development anymore.
Given how poor the output is in a lot of the systems that have only RF output, it would probably be overkill to perfect the RF input anyway. The fact you've done so much work to add RF support in the first place is quite remarkable. :)
tyro_2004_2004
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Re: OSSC Pro

Post by tyro_2004_2004 »

I’m confused. I have been using Adaptive setting on the OSSC Pro, but the Pure I think looks better. I’m using the Sega Saturn w/Scart. Using 1920x1200.

Is it suppose to be that way? Everything I read was that Adaptive is suppose to make 240p games look better but just add alittle lag.

What settings do you guys use for the Saturn?
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marqs
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Re: OSSC Pro

Post by marqs »

tyro_2004_2004 wrote: Mon Jul 21, 2025 4:20 am I’m confused. I have been using Adaptive setting on the OSSC Pro, but the Pure I think looks better. I’m using the Sega Saturn w/Scart. Using 1920x1200.

Is it suppose to be that way? Everything I read was that Adaptive is suppose to make 240p games look better but just add alittle lag.

What settings do you guys use for the Saturn?
Both really just do integer multiplication of active video frame, so any difference come down to either selected sampling preset or how your display scales the resulting output resolution.
jaffa225man
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Re: OSSC Pro

Post by jaffa225man »

marqs wrote: Tue Jul 15, 2025 10:51 pm [There is also a small update regarding availability of Legacy AV board with RF: a final PCB revision is nearly finished and a batch of 10pcs will be ordered in 1-2 months. It includes changes that hopefully mitigate the noise coupling (both via ground plane and air as EMI) on earlier prototypes. Whatever is the end result, I won't be pouring more time and money into its development anymore.
I'm just glad I'll be able to connect the Atari 2600 to my new 4k HDMI-only projector soon. I'm not too worried about noise because the quality of your hardware has been so high in everything else, and you've obviously tried enough. I hope that this perk will just be appreciated for what it is, as it's a feature others would not have even attempted. That is, not in a GPL'd design with the need to reverse-engineer the current RF hardware's proprietary hurdles. You deserve our thanks and community support in removing further noise if people are still bothered by it. Thank you!
tyro_2004_2004
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Re: OSSC Pro

Post by tyro_2004_2004 »

Has anyone used their PS3 on the OSSC Pro?

I tried it with my PS3 Backwards Compatible Launch Model, but I’m not getting a picture on my TV when using the OSSC Pro. The correct resolution reads on the OSSC, but no picture on my TV. Does Any one have any ideas?

Also, any settings I should use for the ps3?
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Triple Lei
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Re: OSSC Pro

Post by Triple Lei »

tyro_2004_2004 wrote: Tue Jul 29, 2025 6:40 pm Has anyone used their PS3 on the OSSC Pro?

I tried it with my PS3 Backwards Compatible Launch Model, but I’m not getting a picture on my TV when using the OSSC Pro. The correct resolution reads on the OSSC, but no picture on my TV. Does Any one have any ideas?

Also, any settings I should use for the ps3?
Probably need an HDMI splitter in between the PS3 and the OSSC Pro for HDCP-stripping purposes. I suppose you could try component video out from the PS3 as long as it's not too much of a hassle switching back to HDMI.
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cr4zymanz0r
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Re: OSSC Pro

Post by cr4zymanz0r »

marqs wrote: Tue Jul 15, 2025 10:51 pm 1. A small quantity from the next batch (currently being manufactured) may be allocated to Stone Age Gamer, but considering recent developments on tariffs and challenges to maintain/reduce manufacturing costs, it cannot be guaranteed.
Is there any kind of estimate when they would receive said stock if it happens? I just wanted an idea so I won't spend my fun budget funds for the month it's expected (if I need to put off other more readily available purchases to grab this when it's available).
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