Is 1080p output from 530p (640×480) input possible with the OSSC?

NewHome Forums OSSC & OSSC Pro OSSC – Discussion and support Is 1080p output from 530p (640×480) input possible with the OSSC?

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  • #36105
    lethargyman
    Participant

    Short version: is there any way of getting the OSSC to output a 1080p signal from a 530p VGA input (resolution 640 x 480)? Or do I need to wait for the Pro with its adaptive line multiplication feature?

    Long version:

    I’m trying to find some good OSSC settings to display a NAOMI on my Samsung LCD TV.

    Line2X produces 960p output, which looks really good. The problem is that the TV’s Game Mode is disabled in this resolution (the Game Mode is supposed to minimize lag. I’m not sure how much difference it makes TBH, but I’d like to use it if possible).

    If I use Passthru instead, then my TV reports a resolution of 640 x 480p and allows the Game Mode to be used, but it cuts off the top and bottom of the picture and (to me at least) doesn’t look as good as 960p picture.

    I think that if I could get the OSSC to output 1080p, then I would get both Game Mode and a complete / high-quality picture (albeit with slight borders at the top and bottom), but I can’t see a way to do this. Am I missing a setting? Or fundamentally misunderstanding something?

    I think the answer could be that this isn’t possible with the OSSC but will be with the Pro. It sounds like the Pro’s “Adaptive line multiplication” feature fits the bill. Have I got that right? If the answer is that I have to wait for the Pro, then I’m happy to wait – the Pro sounds fantastic and I’ll snap one up when it’s released. But if there’s a way to get 1080p already and I’m just missing something, then please let me know 🙂

    • This topic was modified 6 months, 2 weeks ago by lethargyman. Reason: Oops, I misremembered the line count: it seems to be 530 not 525
    • This topic was modified 6 months, 2 weeks ago by lethargyman.
    • This topic was modified 6 months, 2 weeks ago by lethargyman.
    #36127
    Furyofury
    Participant

    To change / transform one resolution (640×480 for you) into another (in 1080 for example) you need an external upscaler.

    By cons it will take up space, example a Dvdo (but it is less efficient than an actual TV but more flexible and therefore allows to “force” the resolution you want, but adds lag including the Edge which can bug easily).
    Brief to see if there is a correct external solution that does not add too much lag (and it is difficult).
    The MCable can be an alternative but seems to be subject to problem on the real rendering / treatment (I believe, it would be necessary to repeat the tests of Retrorgb and others).

    #36129
    nmalinoski
    Participant

    If I use Passthru instead, then my TV reports a resolution of 640 x 480p and allows the Game Mode to be used, but it cuts off the top and bottom of the picture and (to me at least) doesn’t look as good as 960p picture.

    What make and model is your TV? Does it have any overscan, scaling, or aspect ratio options that let you turn off overscan?

    #36137
    lethargyman
    Participant

    The TV’s a Samsung UE32J5500AK. It does have some picture scaling options, but unfortunately they don’t seem to help: I can only stretch the image, not shrink it. I’ll dig a bit deeper in the menus in case I’ve missed something though…

    #36151
    nmalinoski
    Participant

    Page 112 of the manual PDF for your TV (Which, weirdly, doesn’t specify which model it’s for):

    (MENU/123) > MENU > Picture > Picture Size > Fit to screen
    You can configure the TV so that the full picture fits the screen without any cutoff in the size you have chosen.

    #36180
    lethargyman
    Participant

    That option is set to Off and I can’t change it, at least not without changing something else first (I’m simply told “This function isn’t available” if I try). I’ll play around in the menus some more in case changing another setting enables that option. And I’ll try updating the TV’s software in case that gives me any more options. Thanks for your help nmalinoski!

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