What are the ideal settings/compression for rendering of a 3072×768 after effects video for projection?

[David Bogie]

Strongly urge the OP to forget everything at this point to avoid preconceptions and to begin investigating the digital signage industry. Multiple display from a split simultaneous playback is a no-brainer in that industry. One system plays an H.264 stream (in any pixel dimension) and scales it and splits it out to any number of graphics cards. One video source that is accurately split across any number of displays. My MacPro has 8 DVI connectors and these will drive 8 Apple 30″ displays at their maximum pixel dimensions.

What you end up with might be Walter’s system approach but there are specific tools and software for doing exactly what you want to do. Arena and large outdoor advertising venues have been using these tools for decades, they just keep evolving.

Please come back and tell us how your solved your challenges. We see these posts several times a year and they all have weirdly similar but unique solutions.

bogiesan

[Walter Soyka]

[david bogie] “Strongly urge the OP to forget everything at this point to avoid preconceptions and to begin investigating the digital signage industry. Multiple display from a split simultaneous playback is a no-brainer in that industry.”

Respectfully, multiple display is very common in live events, but it is not a no-brainer when you are trying to create a seamless widescreen projected display. There are many factors that would influence playback.

For that reason, you can’t spec the playback device first. An h264-based digital signage system would be able to do what he needs, unless he needs edge-blending in the device, or unless he needs geometry correction, or unless he needs to integrate it with an existing show control system, etc. It’s certainly a great option, but at this point, it’s still one of many options, and we’d need more information before recommending one.

[david bogie] “We see these posts several times a year and they all have weirdly similar but unique solutions.”

Widescreen is an important part of my business, so I work on things like this a couple times a month. The solutions seem similar because the engineering process is the same; they are unique because the physical and creative requirements of each of these display systems differ.

This specific conversation has a thread now over in the Live Events forum:

https://forums.creativecow.net/thread/158/855746

Walter Soyka, Principal
Keen Live, Inc.
Presentation, Motion Graphics & Widescreen Design
RenderBreak: A Blog on Innovation in Production