Video corrupted? 4K iPhone 13 pro

Hi.

I took a 4K 60 fps video during a concert. The audio work fine but the video is this circle with sort of flashing colours. I don’t know how to describe it exactly. I took photos within filming and those are correctly saved on the my phone. I’ve turned my phone off/on. I haven’t activated iCloud on this phone yet. I took other videos on the same settings on the same night and they are fine. Help?

Any way to get the footage?

I don’t know understand what could have happened to the video since the photos within the video are fine.

Thank you!