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HTML 4K Output

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Alex Hughes
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Hi all,

 

We’re running into an issue with one of our BrightSign XT1143 devices and hoping someone here might be able to shed some light.

 

We’ve set the video output to 3840x2160p60, but the content appears to be rendering at 1920x1080. It’s as if the system thinks it’s in 4K but only renders a 1080p viewport.

We’ve followed the docs around fullResGraphicsEnabled, tweaked settings.json, and tried various approaches including both HTML and node.js content using the Chromium HTML5 engine, but nothing seems to make a difference.

Is there a specific configuration step we might be missing? Or are there known quirks with this mode or certain firmware versions? Happy to share logs, firmware details, or test files if that helps.

Appreciate any pointers.

Thanks!

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2 comments

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    Rose Snowden

    Hello,

    While the BrightSign XT1143 is 4K capable, the Chromium HTML5 engine may be configured to render at 1080p by default. To force 4K rendering, ensure fullResGraphicsEnabled is set to true in your settings.json file and that your video and image assets are also 4K resolution. You might also need to explicitly set the viewport size in your HTML or CSS to match the 3840x2160 resolution PaybyPlateMa

     
    Best regards,
    Rose S.
  • 0
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    Alex Hughes

    Thanks I ended up solving it. 

    Fix is here:
    https://github.com/AlexWHughes/BrightSign_HTML5_4K

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