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Output for Giant LED Screen

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xianzi
Output for Giant LED Screen
on Jul 11, 2006 at 5:54:56 am

Hello, I'm in China working with a motion graphics team. We're animating for a giant LED Screen at a sports event. The client wants final output on a DVD. Is this the customary format, and if not, what is?
Cheers!



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aLexx
Re: Output for Giant LED Screen
on Jul 11, 2006 at 8:26:55 am

Dependend of DVD


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aLexx
Re: Output for Giant LED Screen
on Jul 11, 2006 at 8:27:49 am

Dependend of DVD


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Thomas Leong
Re: Output for Giant LED Screen
on Jul 11, 2006 at 1:10:18 pm

The resolution for Outdoor LEDs is not very high - probably about 640x480 since the LEDs are big in order to be bright enough to compete with the sun or other outdoor lights, and can only be spaced so far apart. So DVD's PAL resolution of 720x576 should be fine. Just encode at the highest possible datarate that the playback device will play without hiccups.

If it is Indoor LED instead, then the res could be higher since the LEDs are smaller and not as bright as Outdoor, and can be spaced closer together. Only the supplier will know what his LED's resolution is, so you should work together with the supplier before outputting.

Thomas Leong



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Bob Bonniol
Re: Output for Giant LED Screen
on Jul 11, 2006 at 3:37:02 pm

Thomas,

Both Barco and Mitsubishi, as well as China's Opto-Tech, are manufacturing outdoor, dense pixel pitch (think 8mm to 18mm) SMD LED screens that are hugely bright, and come in all kinds of giant resolutions. We are working on content for one in Beijing right now that is 5120 x 768 and is playing back content via 6 Electrosonic MPG players operating in XGA. Then blended by a Vector multiscreen controller.

So the first point is that you don't know for sure that you are dealing with a low res '640 x 480' 40mm pitch old outdoor screen anymore... Especially in China, where huge beautiful screens are going up everywhere.

The second point, and this is for the poster, is what is the aspect ratio ? If it's a regular 4:3 or even something more 16:9, then you will be fine on DVD. If however, the screen has a very wide aspect (as many stadium screens now do), you will have to take that into consideration in the creation of your content, dealing with it anamorphically if it is to be displayed at wider aspect. Most new screens have either MPEG2 playback decks, or computer based media servers providing signal these days. If this stadium has such a device, your content will look much better coming off it, rather than DVD.

Cheers everybody,

Bob Bonniol

MODE Studios
http://www.modestudios.com
Contributing Editor, Entertainment Design Magazine
Art of the Edit Forum Leader
Live & Stage Event Forum Leader
HD Forum Leader


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Thomas Leong
Thanks for the update and correction, Bob (No message within)
on Jul 12, 2006 at 9:51:35 am

My error.



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