5000 pixel width limit when rendering video

I have a dpx image sequence I'm doing some work on in photoshop which has a resolution of 6144x3456. When trying to export through file/export/render video I get the following error:

An integer between 1 and 5000 is required.  Closest value inserted.

It seems there's limit of 5000 pixels on video exports, even when exporting an image sequence. I've tried making a preset in media encoder but when I select it in photoshop it drops back to 5000. Obviously photoshop has the ability to save images wider than 5000 normally so I'm confused why there's a limit when you go through the render video menu.

As a workaround I could save each frame invidually but that seems like an unnecessary waste of time.

If needed I'm on Mac 10.14.6 and Photoshop 2020 21.1.2