¡Hola! Filing this form https://github.com/webcompat/web-bugs/issues/6682 Steps: Load http://achos.es/mp3/tick1.mp3 Result: Error seen "The format or MIME type of video is not admitted.". Expected result: The file plays like in Edge. ¡Gracias! Alex
That file has a gigantic Adobe XMP metadata block inside its ID3 header at the beginning, which is likely breaking ID3 parsing or search for the sync code.
The same problem as bug 1363647.