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Screen layout

The layout of the screen is defined in the global header section of SMIL document.


Within the <head> node, one can use the <layout> tag to define screen regions.

      <!-- Global layout definition here -->
    <!-- Contents here -->

Global resolution

The <root-layout> tag defines the width and height of the display area. For digital signage, this is the logical resolution of the entire screen area.

  <root-layout width="1920" height="1080" />


The <region> tag defines an area over the entire display zone where individual media items can be assigned to play.

  <root-layout width="1280" height="720" />
  <region regionName="video" top="0" left="0" width="720" height="480" z-index="1" />
  <region regionName="ticker" top="480" left="0" width="1280" height="240" z-index="1" />
  <region regionName="slideshow" top="0" left="720" width="560" height="480" z-index="1" />
  <region regionName="overlay" top="50" left="50" width="100" height="100" z-index="2" />

The <head> section defines a typical 3-zone digital signage application with a zone for 720x480 video, a slide show zone, and a ticker zone. Overlaying the video zone is an overlay layer which allows the user to place a logo or a dynamic message on-top of the running video.

Overlay over video is not yet supported. Feature in development.

The user can then assign each media objects to a region.


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