I’ve got an MP4 that will not play on Safari if I go through the standard WordPress URL (https://s***s.com/ediagnostic/files/2019/03/evideo.mp4), I get this error in the console:
Failed to load resource: Plug-in handled load
But if I use a direct path it’s fine (https://s***s.com//wp-content/blogs.dir/90/files/2019/03/evideo.mp4).
The second link works – they both link to the same file, but the first one uses the standard WP link, the second goes directly to the file.