Extreme High Frame Rate video?

Hey everyone. New Ultrawide owner here. Got the LG 45” 21:9 on Black Friday.

Amazing monitor but the text thing was too much to handle which gave me a nice excuse to build a matching standing desk for my work from home setup with my old Asus 32” 1440p.

I’ve been doing a lot of gaming on the new UW and really enjoying it but I’d love to see a reeaaaaaaaaly good quality video.

Something in full 3440x1440, HDR, and 240Hz.

I’d prefer find something I can download to avoid the compression of streaming.

Any movies I would buy or download aren’t anywhere near 240Hz.

Does such a source of content exist, even if just to download and test once?

Pic for attention. Thanks!