Upscale 1080p content to 1920x1200 for 24 ACD

Discussion in 'Mac Accessories' started by .chris., Apr 7, 2015.

  1. .chris., Apr 7, 2015
    Last edited: Apr 7, 2015

    .chris. macrumors newbie

    May 12, 2009
    Hi everybody,

    As I am not really using my 24" Cinema Display right now, I am thinking about hooking it up to a 3rd Gen Apple TV. I already own an active converter that allows me to connect HDMI sources to the MiniDP-equipped ACD:

    Since the maximum output of the Apple TV is 1920x1080 and the 24 ACD will only accept input at 1920x1200 (or a few other incompatible resolutions) I was wondering if any of you knew some kind of a workaround?

    My ideas so far:
    1) Using an active "scaler" that converts 1920x1080 content to 1920x1200, essentially adding black bars at the top and the bottom - but the ones I can find online are almost as expensive as a new TV
    2) Getting my hands on a firmware update for the ACD that adds 1920x1080 to its EDID. But: Even if there were such a thing as an unofficial firmware update, I am not a fan of the idea

    Anyone got a better idea? I realize I could simply buy a regular TV and have the solution right there, but I was hoping to be able to repurpose the ACD.

    Thank you!
  2. winkosmosis macrumors member

    Oct 20, 2012
    Have you tried it? I'm guessing the screen will just show the 1920x1080 image centered with black bars
  3. Dandu macrumors regular

    Jan 23, 2009
    If you find a solution, i'm interested, i have the same problem with a old Cinema Display (with 1600x1024 definition)
  4. .chris. thread starter macrumors newbie

    May 12, 2009
    Thanks for the responses.

    I used SwitchResX to force my Mac to output a 1080p signal - you are right, the ACD displays the content in a letterboxed format with black bars. Great!

    This looks promising; I will go ahead an order an Apple TV. I will report back once it has arrived.
  5. Dandu macrumors regular

    Jan 23, 2009
    It's not a good idea.

    If you force with a Mac, i think you use the scaler of the graphic card.

    When you send 1920 x 1 080 with SwitchResx, the Graphic send a 1920x1200 image.

    With the Apple TV (and console, etc.), there is no scaler, they assume that the display has a scaler, and Apple display have *no* scaler.

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