Frame dimensions too big to be exported correctly -- help!

[Randi316168560619]

Hi everyone! I really hope someone can help me -- I have a client who has ordered an animated mp4 in the dimensions 23217 x 128 px, for the screens wrapping around a soccer field. But I simply can't figure out how to export it without it being shrunken down to 16384 x 88 px. The source information is correct, but the output gets changed, and if I try to alter it manually it just tells me the frame dimensions are too big.

I've tried Media Encoder and Premiere Pro, both with the same problems. For a little while I had hope that using the format HEVC (H.265) would solve the issue, but neither program works when I try to render with it. How and where can I export an mp4-file from After Effects, with such big frame dimensions?? Please please help! Kind regards, R

[Mylenium]

You can't. It's out of spec. Most of this stuff requires to use the native CoDecs of the playback system or producing intermediate files in another format or producing multiple segments that will then play back in sync. Anyway, discussing this endlessly here on this forum is pointless and a waste of everyone's time. The only sensible thing to do is to contact the tech staff at the stadium that do the actual playback and ask them what they really need and how to go about it.

Mylenium 

[Randi316168560619]

Thanks very much for your response! I've been realizing the same thing, and have contacted the stadium staff to ask what they actually need. R

[Rick Gerard]

MPEG compression always requires an even number of horizontal and vertical pixels because the color is compressed in blocks of 4 pixels.

Whenever you create a project for LED signage, you have to check with the display system manufacturer. They all have their own specifications and requirements. Sometimes you need to send a file to someone that owns the appropriate software to encode the project for playback. It has been my experience that a lot of clients do not have the specifications for their projects included in the project outline. You always have to ask, and you always have to get the specifications for playback.

When TV first went HD, I had a 3-ring binder with the broadcast specifications for about 120 cable networks. There were dozens of variations in the format, color, frame size, and even frame rates, and if you sent CBS something that was rendered for ABC, they might send it back. Broadcast and the Internet have pretty much settled on a small set of standards, but video display hardware is still all over the place.