I am able to use MarsEdit to upload photos to micro.blog. I attempted to upload a 21 MB video multiple times and consistently received this error:
Are there any changes I could make to allow me to use MarsEdit to upload video posts?
Sorry about the error. This is a mistake in Micro.blog… It accidentally has a 20 MB limit for uploads from MarsEdit, when the limit should be 75 MB. For much larger videos, you’ll need to upload from the web (or Micro.blog app for Mac).
I’m fixing the problem now and the change should be rolled out soon.