Mp4 exporting - changing dimensions.

Hi

I am creating an animation in after effects for a sports game LED system that has the dimensions 5280x96px. Is there anyway of exporting this in Mp4 format with H.264? I know H.265 allows for this to be exported at this size but H.264 doesn't and reduces the width to 4096px. However I know not all systems support H.265. I would appreciate any expertise in this. Thanks.