Videos upload with incorrect mime type?

Videos seem to get uploaded correctly (and micro.blog generates a thumbnail), but the video player claims it’s getting an incorrect MIME type:

(upload is an mp4)


Seems like maybe a one-off. I get the same problem if I re-upload that video, but an entirely different video works fine

ah, it happened again. Here is the resulting URL:

If you’d like to access the raw file:
Screencast From 2024-11-28 00-13-47.mp4