Link OSSC to OSSC Pro?

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  • September 26, 2024 at 4:12 AM #63464
    eightbit
    Participant

      This is probably a really dumb question, but I figured I should ask anyway. Being a HUGE fan of the OSSC and owning a few over the years, I just ordered the OSSC Pro.

      There is an HDMI IN on the OSSC Pro. Can I HDMI out on the OSSC original into this and continue to use the OSSC through the Pro model?

      I have two computers using SCART (Amiga and a Spectrum Clone) so I figured I can use the legacy OSSC as a second SCART input this way.

      I suspect no issues and it will just work, but worthwhile to ask I guess.

      September 27, 2024 at 2:36 AM #63500
      Zacabeb
      Participant

        I’ve tried the same thing briefly and it does work fairly well, although I imagine the HDMI input on the OSSC Pro could be sensitive to jitter and require tweaking in the OSSC just like with displays.

        There could also be limitations with higher scaling modes from the OSSC Classic, but there of course it can be set to a lower scaling mode or passthrough and let the OSSC Pro handle the scaling.

        One of the limitations is that internally, the OSSCs can combine an unusually high sample rate with a low line rate to oversample the input, but that cannot be carried over from one OSSC to another over HDMI outside of using corresponding scaling modes before sending things across.

        So passthrough of e.g. 240p won’t be higher than the normal ~860 samples per line while 2x or 4x modes can be higher. With 480i and 576i you may want to use passthrough to take advantage of the OSSC Pro’s adaptive deinterlacing in Scaler mode, but then too you’re limited to the OSSC Classic using a lower sample rate.

        It can also get confusing when tweaking each OSSC as their menus have the same color scheme.

        But with all those things considered, there’s no reason not to test it and check what works. 🙂

        September 29, 2024 at 10:17 PM #63546
        marqs
        Participant

          It is possible, but you should also consider buying/building this passive adapter which effectively lets you repurpose Pro’s VGA input as SCART. Additionally you need fully wired VGA cable (especially pin 4) and 3.5mm cable.

          October 10, 2024 at 4:47 PM #63689
          eightbit
          Participant

            Got it, thanks for the advice!

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