It took me a while to fire up the web browser I use to work with Ecency and PeakD, but I was able to bring up the test post in both front-ends. For me, the embedded video appeared on screen and played as intended: Mike TYson explaining what he will do as he retires from boxing.

In case you need these specs, this is what "Help > About Brave" says about my browser:

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Brave 1.90.128 (Official Build) (64-bit)
Chromium: 148.0.7778.217
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