What To Know About LED Video Walls

LED Video Walls are spectacular when used in retail environments, stage performances, and events, but the knowledge gap between them seems to be extraordinarily complex. From send and receive cards, to the video processor, and that's before you get to the actual videowall led. In this post, we hope to explain some of the working components of them to make understanding the process of LED Video Walls a little easier. 


What To Look For In An LED Video Wall
The main question we get when dealing with digital video displays is what spacing (we call it "Pitch") do you need between LED's? The rule of thumb we like to say is 1:1. 1mm spacing per 1m (~3ft) from your viewing distance. If it's a small retail display, the most common distance from viewing the display is probably 2-3M (6-10ft), or a pixel spacing of 2mm - 3mm. If your spacing is farther apart, the resolution will appear lower. If your spacing is more (closer together), you may not notice the additional spacing and the cost will increase. 

Sending Cards Vs. Receiving Cards?
All video wall panels require both a sending card and receiving card. Some manufacturers will include the send card inside their video processor (explained later), but they will need the both to operate. The Send card operates by sending data to the receiving card, and acts as the brain of the operation. If you have multiple displays, or sections, the send card will tell what content to play on each section. In contrast, the receiving card will decode what the send card tells it to do, and creates a 1:1 pixel location, generally starting in the upper left corner. 




Video Processor
If the send card is the brains of the operation, think of the Video processor as the heart. It is the lifeblood of the video content and required for playback to occur. Some programs simplify the setup, but overall they work in a similar fashion. Add content; either images, video, text, and tell it where to play. 

Triggers
Where it gets complicated is adding triggers, like motion sensors, or other external actions. Generally custom solutions are required when looking for motion activated devices. For more information on LED Video Walls or custom video wall solutions, please contact info@ellumiglow.com or 877.615.6556 for more information. 

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