OSSC Pro

[tyro_2004_2004]

This is the one I have:
https://www.aliexpress.us/item/3256803864234213.html

I've only used it with a PS3, not sure if it actually works on a 4K signal.

Thank you!
lol $1.04…… I made the purchase. First time using Ali express. That’s just stupid cheap.

[fernan1234]

I've only used it with a PS3, not sure if it actually works on a 4K signal.

Most of these splitters can handle 4K60 signals, but it doesn't matter in this case because you would put it between the PS3 and the Tink, carrying a signal between 480p and 1080p max.

[tyro_2004_2004]

Can anyone suggest any settings on the OSSC Pro for the PS3? Using the Scaler is prolly the best option, right?

Going to be playing mostly PS2 Games on the PS3. We started Haunting Grounds but we will be playing some ps3 games of course.

[marqs]

Firmware version 0.79 has been released:

* support for 24Hz HDMI sources added
* support for higher framelock/BFI multipliers added
* “720p max” EDID preset added
* Full TX setup compatibility option added
* various robustness and timing improvements
* Lumacode support for Atari GTIA and Atari VCS added

Lots of things has changed underneath, but the most apparent updates are something only movie watchers and Atari owners are likely to benefit from.

[Kretinou]

thank you marqs

[tyro_2004_2004]

Firmware version 0.79 has been released:

* support for 24Hz HDMI sources added
* support for higher framelock/BFI multipliers added
* “720p max” EDID preset added
* Full TX setup compatibility option added
* various robustness and timing improvements
* Lumacode support for Atari GTIA and Atari VCS added

Lots of things has changed underneath, but the most apparent updates are something only movie watchers and Atari owners are likely to benefit from.

Thanks Man! We Really Appreciate It!

[marqs]

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.

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.

These Legacy AV with RF boards are now available, more details in this topic.

[tyro_2004_2004]

Hey Marqs,

I’m having an issue with the new 0.79 OSSC Pro update. It installs but stays on the Test Pattern and won’t get off it. Even if my system is turned on to AV1. It’s locked to Test Pattern. I tried re downloading it and reinstalled the update 5 times. Same outcome. So I went back to 0.78 and it my ossc pro works perfect with 0.78. Just thought you should know.

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.

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.

These Legacy AV with RF boards are now available, more details in this topic.

[Kretinou]

@Marqs
Will there be any new batches of extra AV Out for OSSC Pro (VGA) ?

[marqs]

@Marqs
Will there be any new batches of extra AV Out for OSSC Pro (VGA) ?

There is currently one in making so a restock should be available soon. In general the demand for these cards has been higher than expected and some of the key parts (also for Legacy AV and AV adapter) have limited availability.

[SGGG2]

Any word on the lag tester module?

[marqs]

Any word on the lag tester module?

I'm willing to port/develop required firmware if someone is willing to design the sensor module. The things I miss from currently available lag testers are capability to measure pure display latency (without scanout delay from top) and strobe length (impulse / roling scan / BFI displays). These were already present in the original OSSC Latency tester but that remained DIY-only.

[Das Muel]

I know it's very niche but is there any chance of a 24khz output mode? I would like to use it with my arcade cab with a Nanao MS8 monitor.

[marqs]

I know it's very niche but is there any chance of a 24khz output mode? I would like to use it with my arcade cab with a Nanao MS8 monitor.

I suppose it could be added on the next FW, it has been already requested earlier and there are some other output presets that are about to be added too. I wonder if some common 24kHz timings are documented somewhere to help making the presets usable as-is.

[tyro_2004_2004]

I know it's very niche but is there any chance of a 24khz output mode? I would like to use it with my arcade cab with a Nanao MS8 monitor.

I suppose it could be added on the next FW, it has been already requested earlier and there are some other output presets that are about to be added too. I wonder if some common 24kHz timings are documented somewhere to help making the presets usable as-is.

Hey Marqs! What’s the new outputs presets coming?

[Das Muel]

I know it's very niche but is there any chance of a 24khz output mode? I would like to use it with my arcade cab with a Nanao MS8 monitor.

I suppose it could be added on the next FW, it has been already requested earlier and there are some other output presets that are about to be added too. I wonder if some common 24kHz timings are documented somewhere to help making the presets usable as-is.

That would be fantastic Marqs. Thanks. There are some timings listed here for Sega Model 2 if that helps at all: https://www.arcade-projects.com/threads ... ngs.28777/

Those settings are mostly consistent with what I use for my own model 1,2 and 3 boards.

[marqs]

Hey Marqs! What’s the new outputs presets coming?

Mainly some CVT-RB presets to enable higher refresh rate 1280x1024 and 1600x1200 modes. I don't know any flat panel with these native res that could even handle the existing maximums, though. A high-res 4:3 interlace mode preset has been also requested, but there's not really standardized ones aside from 1024x768@87i.

[Das Muel]

Hey Marqs! What’s the new outputs presets coming?

Mainly some CVT-RB presets to enable higher refresh rate 1280x1024 and 1600x1200 modes. I don't know any flat panel with these native res that could even handle the existing maximums, though. A high-res 4:3 interlace mode preset has been also requested, but there's not really standardized ones aside from 1024x768@87i.

Is 1024x768@87i roughly 24khz? I'm looking to run Sega Model 2 stuff in its native res from a PC on my 24khz arcade monitor and being able to see my Windows desktop in a hi res interlaced mode would be massively helpful.

[marqs]

Is 1024x768@87i roughly 24khz? I'm looking to run Sega Model 2 stuff in its native res from a PC on my 24khz arcade monitor and being able to see my Windows desktop in a hi res interlaced mode would be massively helpful.

No, but 1024x768@60i is. You could thus use the upcoming 1024x768i preset with 60Hz source and framelock on or forced 60Hz mode with framelock off.

[Das Muel]

Is 1024x768@87i roughly 24khz? I'm looking to run Sega Model 2 stuff in its native res from a PC on my 24khz arcade monitor and being able to see my Windows desktop in a hi res interlaced mode would be massively helpful.

No, but 1024x768@60i is. You could thus use the upcoming 1024x768i preset with 60Hz source and framelock on or forced 60Hz mode with framelock off.

Superb. Looking forward to it. Thanks.

[Kretinou]

@Marqs
Will there be any new batches of extra AV Out for OSSC Pro (VGA) ?

There is currently one in making so a restock should be available soon. In general the demand for these cards has been higher than expected and some of the key parts (also for Legacy AV and AV adapter) have limited availability.

available again !!

[spmbx]

@Marqs
Will there be any new batches of extra AV Out for OSSC Pro (VGA) ?

There is currently one in making so a restock should be available soon. In general the demand for these cards has been higher than expected and some of the key parts (also for Legacy AV and AV adapter) have limited availability.

available again !!

So yeah now the Extra AV Out is in stock but the AV Input/Output Adapter is not . What kind of cable or adapter would i need to buy to connect the Extra AV Out to an RGB SCART Tv for downscaling?

[spmbx]

Anyone else? I see the stock is down to 11, i guess the chances of ordering this and the scart adapter are slim to none and i have no idea what i'd need to connect this to scart. Vgp site has no i formation either

[BuckoA51]

I can only apologise, I've been trying to get the SCART sockets that the AV in/out adapter uses. I ended up buying a bunch from a supplier in Hungary, and sending them in to China where for whatever reason Chinese customs are being awkward about clearing them.

You can use something like an Arcadeforge UMSA https://arcadeforge.net/UMSA/UMSA-Ultim ... anguage=en (as I did here - https://videogameperfection.com/2023/12 ... -delights/) though it's a little over kill and requires its own power supply unit.

[ktown]

My last experiments with 120Hz on a CRT have been quite some time ago. I had 480p120 running on FW900 fed by a DVDO and I also don't recall any negative effects caused by the double strobing of the frames, but this has been 480p60 content back then and I don't think I tried with classic 2D stuff.

What model of DVDO did you use? I'd like to try it out with less latency than my other programmable video processors.

I've only attempted this with the Corio2, Barco ImagePro II, and editing modelines in emulators.

Apologies for quoting such an old post but I’ve not found info on it anywhere regarding downscaling apart from you talking about it but have you ever managed to programme your Barco to output 240p? I’ve managed to acquire an imagepro SDI but the horizontal frequency can’t be changed on its own and it’s dependent on the vertical frequency being changed. If you’ve managed to output 240p, then would be interested in knowing how. Thank you

[GK6475]

Any chance of getting inverse telecine (2:2 and 3:2) support for interlaced sources anytime soon? It would be really nice for 30fps 480i games and 24fps VHS movies. It'd be great if it was force-toggleable for 480i content that is always at a consistent framerate as well instead of just being auto detected like what some TVs and other scalers use. Having 24Hz input support is kind of in line with this, so having IVTC support would make the OSSC pro even better specifically for movies and 30fps 480i content.

[marqs]

Any chance of getting inverse telecine (2:2 and 3:2) support for interlaced sources anytime soon? It would be really nice for 30fps 480i games and 24fps VHS movies. It'd be great if it was force-toggleable for 480i content that is always at a consistent framerate as well instead of just being auto detected like what some TVs and other scalers use. Having 24Hz input support is kind of in line with this, so having IVTC support would make the OSSC pro even better specifically for movies and 30fps 480i content.

The utilized video IP supports those as optional features, but enabling them would consume majority of the remaining unused logic on FPGA. It is thus possible to make a special firmware but they are unlikely to be included in the main build since once you add something, people will get upset once it gets taken away, no matter how niche the feature is. Support for 3 alternative firmwares (programmed on the flash, selectable from menu) is also planned and nearly complete, but making variations which are kept sync with main branch requires maintainers.

[GK6475]

Any chance of getting inverse telecine (2:2 and 3:2) support for interlaced sources anytime soon? It would be really nice for 30fps 480i games and 24fps VHS movies. It'd be great if it was force-toggleable for 480i content that is always at a consistent framerate as well instead of just being auto detected like what some TVs and other scalers use. Having 24Hz input support is kind of in line with this, so having IVTC support would make the OSSC pro even better specifically for movies and 30fps 480i content.

The utilized video IP supports those as optional features, but enabling them would consume majority of the remaining unused logic on FPGA. It is thus possible to make a special firmware but they are unlikely to be included in the main build since once you add something, people will get upset once it gets taken away, no matter how niche the feature is. Support for 3 alternative firmwares (programmed on the flash, selectable from menu) is also planned and nearly complete, but making variations which are kept sync with main branch requires maintainers.

Ah, I see. I hope IVTC gets added and maintained at some point in an alternate firmware despite it being a somewhat niche feature. Also, for component input (specifically YPbPr) I've been noticing a strange issue where 240p content (tested with my PS2 running PS1 games, GameCube, Wii, and modded N64) won't work at all using 4x or 5x line multiplier to 1080p and has a strange flickering line near the bottom of the screen when using 720p. These issues are not present on any of the RGB inputs from the same sources. In addition, sometimes the HDMI input will glitch out on a resolution change from my GameCube/Wii (which requires me to reboot the OSSC Pro), and 480i occasionally doesn't show up well (looks like it may sometimes interpret even as odd and vice versa. Switching the input to a different source and back sometimes fixes the issue). Are these issues already known and is a fix of some sort in the works?

[Das Muel]

It probably won't be very popular but is there any possibility of a Flicker filter option for 480i output just to soften things a bit?

[orange808]

I think a downscaling firmware that targets 480p and below would be popular. Could maybe include more robust scan converter (interlaced) features in that firmware?