YouTube videos do not play in the Brave browser

[mikedavies-dev]

There appears to be some kind of issue loading YouTube videos with MediaElement on the Brave browser (based on Chrome).

https://brave.com/

I'm not sure if this is a Brave issue or something to do with MediaElement.

Steps to reproduce

1. Download + open the Brave browser (I'm using MacOS Version 1.1.20 Chromium: 79.0.3945.74 (Official Build) (64-bit))
2. Go to the MediaElement homepage (https://www.mediaelementjs.com/)
3. Select YouTube as the video source
4. Click play

Expected behaviour

The video should play

Actual behaviour

The video does not play and the following error can be seen in the developer console

Access to XMLHttpRequest at 'https://googleads.g.doubleclick.net/pagead/id' from origin 'https://www.youtube.com' has been blocked by CORS policy: The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

Other notes

Normal YouTube embedding appears to work fine in Brave

[jaapmarcus]

Please allow autoplay from MediaElements Website and the function works fine. Due method how the player handles external render like Youtube. Brave thinks is an auto play and this is not allowed. When Enableling auto play it works fine

The error is most likely caused by privacy features of Brave browser. Sadly enough we can't control this.