The traditional way of making a video wall by
splitting a video signal to several monitors, described in the previous blog
post, is a good start in creative digital signage. To make even more impressive
installations you can go one step further and synchronize the content on
several monitors using separate media players for each monitor. By
synchronizing the media players you can create entire environments with an
almost unlimited number of monitors all operating together at full resolution.
Creative digital signage with synchronized monitors
The idea of
synchronizing media players is that you can use individual content on each
screen but still get the monitors to work together in a synchronized way. In the figure below there are three
animations (video clips) that are synchronized to start simultaneously. Since
these video clips are provided by separate media players they can all be
displayed at full HD resolution (1920x1080) pixels. Together they create a
spectacular video wall having a total size of 5760 x 1080 pixels.
By synchronizing media
players you can set up creative digital signage applications with almost unlimited possibilities |
In principle, any
number of media players can be used in such an application. The media players
are synchronized using a common sync message that is incorporated in the
broadcast address packages in the local area network. Since all media players
are listening to this address by default, there is no need to worry about the
IP addresses individual media players. Also, a very high degree of accuracy of
synchronization will be achieved regardless the number of media players and
monitors.
Each time a
playlist is looped, a new synchronization message is sent out making the media
players to stay in sync indefinitely. Each media player contains a playlist that
contains a number of video clips and images that are automatically kept in sync
with the content displayed on the other monitors.
You are free to
set up any kind of synchronized monitor application and do not necessarily need
to group the monitors as a video wall. There are lots of other creative ways to
use the synchronized screens. An example is in an escalator or in a staircase
where the monitors are placed at some distance between each other. You can then
make an animation where you let objects move from one monitor to the next to
create very impressive dynamic effects.
More information
on how to build the animated content shown in the figure is to be found in the MultiQ
Content Creation Quick Guide Part 1. The application above has been made
using Serif Draw Plus X5. This tool allows for large high resolution animations
to be rendered into several separate animations that fit into each screens.
Using this method you will automatically get a number of video clips having the
same duration and that will be displayed perfectly synchronized using the
MultiQ digital signage system.
Lars-Ingemar Lundström
Documentation and
Training Manager, MultiQ
Creative digital signage with synchronized monitors is an effective way of getting mass attention. Synchronized screens can be used in many ways to create some cool effects. There are a many companies providing this kind of application, http://ryarc.com/ , scala.com, novari.com are to name a few who have pioneered in creating excellent digital signage softwares.
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