I use Brave as well and no problem with this video.
That said though, I occasionally have problems Brave showing a video that Safari works fine with. My attitude is that it’s the content poster’s problem and move on. I’m not dropping the blocks.
Brave on pc or mobile? Mines on mobile and i have ad blocking ON. When i checked the stats of the original site the video was linked to there were 8 items that were blocked. Both sites seemed sketchy and i find a lot of Freepers post from sites with paywalls or tons of Ads like daily mail.