First thing you will need to do is get the diffuse texture for your tv or monitor.
Take note of the screen area. all frames will stay the same except for the screen itself.
Your final sheet will look like this.
What you need to do is make the 64 screens for what you want in there. You can use images, video frames, or something abstract, up to you.
In a paint program you will need to set up a new 4096 x 4096 image. Use a pure black back ground or have it be transparent.
Your color texture will need to be tiled out across the sheet 8 time for horizontal and 8 times vertical giving you 64 cells for display using the above shader. The order the shader displays the cells are from the top, left to right, then to the next row, repeat till the 64 cells are displayed, then it will loop.
Set your grid to 1024 x 1024 and set it to display. You may need to change its color so you can see it on the back ground.
Set snapping to grid if you have that option. Placement is very important for a smooth non jittery look when completed.
So your color texture from your monitor object needs to be resized to 1024 x 1024. Place a copy into each grid square on the new texture sheet.
Once that is done, comes the task of bringing in each frame of the screen part you want and moving it to the grid locations in the order as mentioned above.
When you are done, Save a working copy of the texture sheet un flattened. Then Flatten the image and save copy the file off as your texture name_D.dds
This is the only texture that the shader calls for and uses.
Should look like the monitors in this video. Time from 5:00 to 5:45.
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 2400 Mhz, 4 Core(s), 4 Logical Processor(s), 8gb RAM, Nvidia gtx660, Windows 7 Pro 64bit, Screen resolution 1680 x 1050.