Advanced Embed attempt 1 - the JavaScript file gets deferred to the bottom of the page as this is how the site by default is set up to handle JavaScript.

Advanced Embed 2 - using the advanced embed code provided by Brightcove support

Advanced Embed attempt 3 - the JS here is not deferred, as we have given it a data attribute which lets Magento know not to try and defer it, however, it still doesn't work

Advanced Embed attempt 4 - copied directly from the Brightcove player (apart from the border colour)