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The easiest and most immediate way to prepare an exhibit for the LINK MediaWall is to produce a high-definition video file which spreads across some or all of the wall.  Presentations and visual content may be composed, edited and exported in Microsoft Powerpoint and Apple Keynote, as well as in a number of readily available 4D applications-- Adobe AfterEffects, Adobe Premiere, Adobe Flash, Apple Final Cut Pro and the like.  As long as an application can output digital video, the files can be converted to a format which will play on the MediaWall.

This method is used to display both dynamic motion video and graphics content, as well as more simple "slide show" type presentations.  Since the walls can display high-definition video, the image quality of static images is usually more than adequate to maintain appropriate visual quality.  Exhibits should be composed considering the overall aspect ratio of the MediaWall -- 3.555:1, or the equivalent of two HD displays sitting next to each other.  Numerous templates are currently available to interested developers which are pre-formatted with the proper resolutions, screen guidelines and render settings. If the grid overlay is not present on the downloaded template, create a 3x6 proportional grid overlay to approximate the location of the 18 displays.

Another easy way to prepare an exhibit is to use the Link Mediawall Autoplayer. This is a media player application, which uses an .xml file to configure a custom exhibition, playing the media files provided by the user in a scripted, random or interactive manner. An exhibit can be tested on a developer's desktop computer, which can then be deployed directly to the mediawall. A downloadable Autoplayer application is available on the Mediawall Github site.

A third way to develop a project is to utilize the web-based slideshow template, also found on the Mediawall Github site. A developer simply needs to drop slide and title images in the appropriate folders, and edit a text (.json) file to provide title, author, caption information. This template can be used as is, or customize as the developers desires and skills dictate. The project can be hosted on a Link Mediawall http server, or another server of choice.

Finally, exhibits may also be produced as a custom application written in C/C++ or Java, perhaps using a development framework such as Processing or OpenFrameworks.  This obviously allows an exhibit to be much more dynamic and interactive, though correspondingly requires more technical expertise on the developers part.

LINK MediaWall Physical Dimensions

  • 3x6 grid of 46" thin-bezel displays (Samsung 460 UT-B)
  • the overall size of the Mediawall, 242.4"/20.2' W x 68.4"/5.7' H
  • each display has a 1366 x 768 pixel resolution, 24 bits deep.
  • aspect ratios - 3.555:1 (full wall), 1.777:1 (individual display)

Preparing Material/Exhibits for the MediaWall

  • still images
  • video
  • C/C++/OpenGL or Java

Project Testing

Developers may request access to a development system (Smith MediaWall) located at Smith Warehouse, Bay 11.  This system has the same graphics hardware as the LINK MediaWall, with attached displays configured in a identical aspect ratio to the Mediawall.  Projects may be tested at this venue, with fair assurance that that performance will match comparably with the LINK.    Please contact mediawall@duke.edu for access.

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