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MoGraph: How to create a video wall easily

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JohnMoGraph: How to create a video wall easily
by on Apr 4, 2007 at 11:38:49 am

I am using MoGraph to create what I would call a 'video wall'. I have 75 photos of people that I want to map onto 75 TV shapes which I want to animate in various ways. I have the wall built using two cloner objects (one for columns and one for rows, nested). That all seems to work great.

My problem is: how can i easily map a folder of 75 individual .psd or .jpg files to the 75 TV's? I would like to avoid manually assigning 75 separate materials, which (I think) would require me to not use a cloner object -- is that right?

I tried creating a shader effector with a 'multi-shader' that had several shaders, each with a different photo. But I can't get the any of the shaders to map to an object.

Thanks much for any help.


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Adam TrachtenbergRe: MoGraph: How to create a video wall easily
by on Apr 5, 2007 at 7:05:30 pm

Here's how I would do it:

Create the wall with a cloner set to matrix mode.

Create a material with luminance channel only.

Place multi-shader in the luminance channel.

Now you'll need AE, QT Pro or similar, and a batch image processing:

Batch rename your image files so they have consecutive numbers.

Load the images into a processing app as an image sequence and save out as a movie file.

Load the movie file into the multi-shader and click the "To Layers" button.

Drop the material on your cloner.

Create a Step Effector, set to affect color only.

That should do it.


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cdoss1Re: MoGraph: How to create a video wall easily
by on Apr 6, 2007 at 2:10:28 am

Would it be possible to change each image individually? Ie. could you make a wall of still photographs using this same process?

Thanks in advance for your help



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Adam TrachtenbergRe: MoGraph: How to create a video wall easily
by on Apr 6, 2007 at 8:45:51 pm

Sure, you could do the same thing with stills, but you'd have to load each image into the mograph shader which would be pretty tedious if you have lots of them.


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