Hi, thanks for your great library.
Using the Nu Html Checker (https://validator.w3.org/nu/about.html) which does not check the source code but the generated code ("Check serialized DOM of current page") I get the error message:

Element mediaelementwrapper not allowed as child of element div in this context. (Suppressing further errors from this subtree.)

I see no possibility to avoid it - do you?
Changing the name into anything else ('me-wrapper' or even 'div') leads to the error message:

Element source not allowed as child of element video in this context. (Suppressing further errors from this subtree.)

We need a "no error validation" from the Nu Html Checker as a prerequisite for a wcag-test (https://testen.bitv-test.de/index.php?a=di&iid=99, sorry, its in German)
Thanks a lot for your help!