Open Source Scan Converter

Item is not in stock.
£151.80 price includes VAT
£126.50 price excluding VAT

Limited stock – Please reserve your unit by joining the mailing list here. We’re working on producing more units and expect better availability later in the year.

Important! – We give you the option to purchase the OSSC without power supply unit (PSU) or remote, so that you can use suitable replacements you may already have yourself. Information on using alternative remotes is available here. Please note the specs of the required PSU carefully. You require a unit that outputs DC 5V with at least 1 Amp. The tip must be 2.1 x 5.5mm and centre positive. Please note that damage caused by using an incorrect PSU is not covered under the warranty.

It’s finally here! The ultimate lag-free retro gaming linedoubler and processor hits the market. Now there’s an affordable way to use your retro consoles on your PC monitor or TV in perfect quality. No more bad upscaling, no more interlacing artefacts, no more high input lag, the OSSC is a dream for retro gamers and collectors!

What does it do?

Processes (line doubles) retro games with NO input lag – Unlike other scalers, such as the XRGB Mini, the OSSC works on individual scanlines rather than a frame at a time, that means there’s no input lag whatsoever (well, a few nanoseconds if you really want to be precise).

Eliminates ugly deinterlacing artefacts and bad scaling – Connect most retro consoles to your TV and if you get a picture at all, it’s likely to be ugly. Bad scaling combined with deinterlacing (which should never even be applied to 240p material) will ruin the picture and make you wish you had your old CRT back. Well, worry no more! OSSC converts the image into a 480p or 720p (where compatible) image that is correctly displayed and processed. EVERY special effect, from 240p drop shadows to striped sprites, is rendered correctly.

Converts SCART and Component to DVI/HDMI – Feed in a 480p component video signal from a Wii and get out a perfectly processed 480p DVI or HDMI (with a simple adapter) image. The quality is flawless!

Convert VGA to DVI/HDMI – Connect a Dreamcast directly to the unit and enjoy HDMI processing of all your games, not just those that support 480p.

Fast deinterlacer – Fed up with high input lag on interlace games? The OSSCs deinterlacer is lag free! Note that this does however mean there’s a drop in picture quality for interlace sources, but this is unavoidable. A pass through mode, where interlace signals are sent directly to the TV for processing instead, is now available.

For more information, click here.

What are other people saying?

Don’t take our word for it, check out these other reviews around the web.

OSSC – Fudoh’s review

OSSC – Review by Blizz

Documentation, support and returns

Firmware updates

Support Forum

Quick start guide


In addition to the standard 1 year EU warranty, we’re also giving a one-month no quibble return for all units. Test the OSSC in your setup and if it doesn’t work, return it to us for a full refund. All we ask is that you pay return postage and send the complete unit and any accessories undamaged. Contact us here if you need to return a unit.

Technical specs


  • 1 X SCART – Supports RGBs (clean csync, cvideo sync, luma sync), RGsB, Ypbpr
  • 1 X Component video – Supports Ypbpr and RGsB signals
  • 1 X D-SUB15 (VGA) – Supports RGBHV, RGBs, RGsB, Ypbpr
  • Composite video and S-Video are NOT supported and require an adapter/transcoder



  • 1 X DVI-D (digital only, no audio) Full-range 24-bit RGB output through DVI/HDMI
  • 1 X Analogue audio 3.5mm


Supported input resolutions

  • 240p/288p/480i/576i 15khz
  • 25Khz medium-res modes
  • 480p/576p/720p 31khz


Supported output resolutions

  • 240p/288p -> 480p or 720p line triple (compatible displays only)
  • 25Khz medium-res modes -> 480p
  • 480i/576i -> 480p/576p or pass-through
  • all 31khz resolutions passed through


Other features

  • Back lit LCD
  • SD Card socket for firmware updates
  • JTAG connector
  • IR reciever


Power requirements

  • DC 5V 1 Amp – 2.1 x 5.5mm positive tip


Customer Reviews

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Average rating:  
 4 reviews
The Holy Grail

I own both the framemeister and this bad boy.
The color difference is overwhelming thanks to the OSSC's RGB processing.
All my RGB Consoles (SNES, PS1, PS2, N64mod, Wii) work great without any fine tuning.
The latest 0.76 made the unit so much better too.
If there will be an updated ready to use version of this unit including digital audio and maybe HDMI out I will definitely buy again because this shop is offering such a great service.

What I was looking for

Follow up of my comment below, I took time to test the other consoles in my possession.

For the tests, I had the following criteria:

- It should just work, without tweaking anything in the menus.
- In doubt, I tested the console on my good old CRT TV.

The firmware was version 0.73 at this time. I see a 0.74 update but nothing about improving compatibility.


NES: PAL model with SCART, OK.
SNES: PAL model with RGB SCART, OK.
N64: No RGB output, only composite.
GC: PAL model, OK with the RGB SCART from the SNES (just makes the image darker).
Wii: Oops! forgot to test, too bad, I even have a component cable.


MS: PAL model, Never output an image, just sound.
MD: PAL model with SCART, OK.

Neo Geo AES: OK.
Neo Geo MVS: using a supergun, OK.


PCEngine CoreGrafx: bought it with a RGB SCART, don't know if modded, OK.


PS1 & 2: I only have a composite cable, so I didn't even try.


So it's almost a complete success, except the Master System issue. I'm not sure the OSSC is completely to blame as it's reported to work, but the console perfectly worked on the CRT.

And the lack of composite support is still a limitation. Maybe there are RGB or component cables for the PlayStations, but I'm not motivated to hack my N64 with a mod.

In my comment below, I also reported the remote is a bit "lazy", and the case stinks of chemicals.

Due to the lack of composite support, the OSSC is still not the all-in-one solution that just works but it's very close to it, for a fraction of the price of other converters. For this reason, I cannot give it five stars so I removed one.

Eager to later edit this review with the Master System issue solved, and the PlayStation 1 & 2 tested.

Thanks! Master System is definitely working for us and works great, better than XRGB3. Chemical smell should wear off after a few weeks. As for your N64, we can help you mod that for RGB output and the picture will be far better than with composite.

I've had my OSSC for a couple of weeks now and I've been able to test it across a variety of TV sets and consoles, and I have to say it's an absolutely astonishing bit of kit. The line triple mode is great if your display supports it - one of mine didn't, but the linedoubled 480p image was still a significant improvement over the TV's native handling of 240p over RGB SCART. The lack of lag here is a godsend if you like timing-intensive games like music games, too - we were able to beat Amplitude songs on Insane difficulty via the OSSC, which we'd found impossible on many TV sets without it. All in all, I'd highly recommend this device to anyone who must have the best image from their old hardware.

The best thing I can say about the OSSC is that it places the focus back onto retro games. As much as I credit the XRGB for breathing new life into my retro library, I found myself spending more time navigating the painfully slow interface to achieve the desired results than I was actually gaming. The OSSC forgoes a lot of the XRGB’s features for the benefit of zero lag and being focused on line doubling/line tripling flawlessly. It’s a trade I’m more than willing to make as the results are astounding. Big thanks to Marqs for designing the OSSC and also VideoGamePerfection for assisting with production.

If your country is not listed as a shipping destination please contact me, I may be able to sort something out for you!

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  1. Samson says:

    Given how many people have signed up for the mailing list in response to this, do you think you’ll have enough of these to meet demand by the end of the year? I’m kicking myself because I signed up for the newsletter at the beginning of June but evidently didn’t click the “activate” link back then.

    Are you going to make kits available in that time frame as well?

    While I’d rather not assemble the whole thing myself, the thought of needing yet another box with yet another power supply just to combine DVI and analog audio is pretty unbearable. Any chance you’ll sell these complete minus the DVI output and let us “integrate” the HDMI connector ourselves?

    • BuckoA51 says:

      Yeah we’re certainly trying to ramp up supply, I want to make sure we’ve got plenty in time for Christmas. Integrating the HDMI connector isn’t that simple, that won’t magically give you digital audio because there’s no audio encoder on the board. We’re working on some digital audio upgrade boards though, both as a DIY upgrade and as a fitting service.

      • Samson says:

        The PCB diagrams on the wiki indicated an HDMI socket, so I thought it had just been stubbed for the DVI port, but that makes sense.

        Is this device capable (through a firmware update) of adjusting overscan? That would be extremely helpful for EDTV CRTs which support 480p natively.

        • BuckoA51 says:

          Adjusting by zooming the picture? No. Adjusting by moving the picture, potentially.

          • Samson says:

            Yeah, definitely not talking about zoom. My knowledge of analog video signals would barely fill a thimble but I remember the horizontal and vertical width being controllable via pots on older TVs. I always thought the video signal itself could be adjusted to achieve the same effect (and thus compensate for overscan), but I suppose that was adjusting the CRT and not the signal…

  2. Flygon says:

    Hey! Does this support line doubling interlaced signals into interlaced signals?

    For example, 480i to 960i, going from ‘even-odd’, to ‘even-even-odd-odd’.

    My TV supports this, and it’d be awesome to see a line doubler support this. 🙂

  3. andrew says:

    reading the tech spec shows output is HDMI but without sound? Is this correct? If that is the case how to send sound input to LED tv? Btw, i’m using the Omega Entertainment system playing neo geo mvs games with scart output. Is this supported?

    • BuckoA51 says:

      Yes Neo Geo is absolutely supported. Typically you route sound to your AV receiver or hifi or many TVs have a separate audio input. Failing this, an audio integrator must be used.

  4. David Kerekes says:

    Just found out about this.

    Where can we buy one?

  5. Matthew says:

    Please support output formats 576p (288p line doubled) and 864p (288p line tripled) – both of which are supported by the majority of PAL displays – all my TVs/Monitors do at least (Samsung & LG).

  6. krisstof bizac says:

    I receive the newsletters but nothing for getting one 🙁 , let me know how to be on the queue thanks

    Mr BIG

  7. David Kerekes says:

    I read this doesn’t have HDMI out, but you have to buy a DVI and analogue audio to HDMI integrator?

    Where would I buy one of these? I need it to have HDMI out put.

    Also it seems your upgrading the audio board for digital audio. When will these be available?

  8. Matt says:

    Any idea when the next batch of OSSCs will be ready?

  9. Mike K says:

    I get the impression the 240p/288p line doubler/tripler modes also double/triple the width (giving some non-standard values as far as HDMI is concerned). In the case of the tripling to 720p, why not offer to pad the width to 1280 (using black pixels, and centering by rounded to the nearest 4th pixel to avoid chroma subsampling), for better HDMI TV/capture compatibility?

  10. David Kerekes says:

    I’m 1641 in the list. Damn I far away. Could be another year before I get one. Slight disappointed tbh. Don’t know if I could wait much longer 🙁

  11. phonedork says:

    Hey Bucko…

    I an trying to get this whole line doubler / tripler thing down. Why is it different then X2 Scaling? Or Line tripling not the same as X3 scaling? I thought only a CRT uses horizontal scanning lines to draw a picture. So taking a 240p pic and scaling to 480p makes since to call it a line doubler when displayed on a CRT. Digital fixed pixel displays such as a LCD uses horizontal and vertical pixels to draw a image. Not lines I thought??? Anyways I am a bit confused. Also does this thing handle 480P really good unlike the XRGB Mini? Because sync on green is pointless if 480p cant be line doubled to 960p very good. Anyways great review!

    • BuckoA51 says:

      480p isn’t really what it’s designed for, there is a 480p line double now though it’s not compatible with all displays and you might not like how it looks anyway. Line doubling is different to scaling as scaling requires a frame buffer, while doubling/tripling can work line by line. Yep HDTVs don’t work by drawing individual lines but the analogue video signal still does, since it was designed for CRTs in the first place.

  12. Luis says:


    Just wondering how much longer its going to take to have OSSC ready to order?

  13. Simon says:

    Awesome product, very happy with my purchase. 10 days delivery to Sydney. Dreamcast RGB 480p mode (RBGHV mixed to CSYNC) works great and reports 524p – games look fantastic. RGB modded NES looks great too, it’s like playing it on a CRT there is so little lag (using a very low lag DELL LCD panel). I even connected a PC via VGA to this device and it outputs perfect lag free DVI or HDMI – as expected. Can’t wait to see what future firmware holds for this device. For now, I will be sticking to this over my Framemeister for retro gaming and analogue video tinkering. OSSC also completely blows the GBS-8220 out of the water in terms of video quality and lag-free experience.
    Highly recommend purchasing or jumping in the queue to purchase. For me it was very worth the wait.

  14. Oursique says:

    Exactly what I was looking for: it works out of the box, no complicated setup, designed for European SCART instead of the cryptic JP21, and it certainly costs less than the Frammeister and all its adapters to make it compatible, and I can finally play retrogaming on the (HDMI-only) projector. I cannot compare the image quality as I never owned another converter. I thought the separate audio output would complicate the setup but it’s actually straightforward since I already pulled a jack from the hi-fi set to the projector, I just have to plug it into the OSSC instead.

    Tested so far with NES ans SNES (French models, outputting SECAM?), and Neo Geo MVS (through a supergun). The NES image is not quite sharp but that’s what the RGB mod is made for. I can probably improve it in advanced menus but the fact that it just works is a plus for me. As for the input lag, it’s so fast I cannot just feel it (the projector is most probably the bottleneck anyway).

    Still needing to test SEGA consoles, more recent Nintendo ones, and the PlayStation series, so I cannot give a note yet.

    On the minus side, the remote is capricious (or is it the IR receiver?) but it’s barely needed. And the case stinks chemicals! I don’t know if it comes from a solvent but I had to leave it in the open air the whole day for the smell to vanish.

    Maybe VGP could also add a DVI-to-HDMI adapter to purchase options, I would have taken one. I forgot about that point but hopefully I found one in my pile of cables to play the same day.

    Hoping the production will reach cruising speed so more people can benefit from it.

  15. M says:

    Hi ! Does the package come with a dvi to hdmi cable ?

  16. Grant Butler says:

    Why are people so worked up about digital audio out? Surely you just plug the audio cable from the console into your own sound system? Going through hdmi would just introduce latency any ways…

  17. Oursique says:

    Thanks for posting my review and for the comment. Indeed the Master System issue is probably a silly one, but I tested several cables, even the one from the Mega Drive and they all displayed a sharp picture on the CRT.

    As for the N64, unfortunately my model is not the NUS-001 (FRA) easily moddable, so Christmas will be in advance this year with an already modded one, professionally done with surface mounted devices. I’ll use the SNES cable and compensate for the darker picture. But Mario Kart, just to name one game, on the projection screen will be so cool!

  18. Bruno says:

    Are you going to send to Brazil?

  19. Jonas Andersson says:

    I have the 2016 model Samsung ks8005(us) 7005(Eu), which only have optical sound and hdmi outputs. Can I use the ossc using this UHD
    4K tv? Is it possible with some kind of DVI, and 3.5 analog to optical adapter?

  20. Zachary says:

    I don’t suppose that we will be able to adapt composite or s-video to the scart port? I don’t see them on the comparability list.

  21. Antonio Heimonen says:

    Hi! Any idea when more units will be available? Thanks!

    • jdryyz says:

      I second that.

      • BuckoA51 says:

        Make sure to subscribe to the newsletter for all the latest announcements.

        • jdryyz says:

          Gladly took care of that. 🙂

          • Dave K says:

            I’ve been on the mailing list for a week without any newsletters at all or any word on what the supply chain looks like.

            I understand that it will be “a while”. But I was hoping to ballpark that time frame and I still don’t have any idea if it’s weeks, months, years, lifetimes, if I need to go back to 1955 and convince my father to buy one at the enchantment under the sea dance, or if I have to defeat the grim reaper in a game of twister so I can meet station and get him/them to build me one.

  22. Rommel says:


    This is more of a question than a comment.

    I am located in the US, i was just wondering if i buy a OSSC unit what will i pay the 151 with vat or 126 vat exemp pounds?

    how much is the shipping cost normally is?

    thank in advance

  23. Do the Component and VGA port also have audio input options?

  24. Antony says:

    Do you recommend (or not recommend) any particular DVI-D to HDMI adapter? There are cables with DVI-D at one end and HDMI at the other – would one of those be suitable for use with the OSSC?

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