What is the OSSC?

What it is

It accepts RGB SCART, component and VGA inputs. It is a line multiplier: it repeats each incoming line several times so the output reaches a resolution that modern displays accept, and it sends the result digitally. Nothing is stored between input and output, so the delay is only a few lines. See SCART and RGB and sync for the input signals.

A scaler with a frame buffer is different. It stores a whole frame, rescales it, and then sends it, which adds a delay of at least one frame and often softens the lines. The OSSC is an open-source hardware project, so its designs and firmware are published.

Why it matters

• Low delay: for fast games the timing of input and picture matters, and a line multiplier adds very little.
• Sharp lines: repeating lines keeps scanlines and pixels crisp, since nothing is blended.
• Display support: some displays do not accept the output modes. Try yours before relying on it.
• Cables and sync: the box needs the right cable and the right sync type from the console, as covered in RGB and sync.

How this shows up in our work

A scan converter is one way to play analog sources on a modern screen. The other is to keep a CRT display, which shows analog video directly.

We collect working CRT televisions and monitors, pay for rare professional ones, and test each set with real video sources before rehoming it. Details are on our CRT recycling page.

Learn more

• OSSC at junkerhqThe project's reference page, with supported inputs and setup notes for people building or using one.
• Component video on WikipediaBackground on one of the inputs the OSSC accepts.