OH, I didn't realize those were videos. There is no indication they're anything other than still pictures when viewing the article in Firefox (unless you mouse over them and look at the file extension). They aren't presented as video embeds.
Computer specifications:
Windows 10 Pro x64 | Ryzen 3700X | ASUS Crosshair VIII Hero WiFi Motherboard | 16GB 3600MHz | Geforce 1070Ti | Corsair AX760 PSU
Windows 10 Pro x64 | Ryzen 3700X | ASUS Crosshair VIII Hero WiFi Motherboard | 16GB 3600MHz | Geforce 1070Ti | Corsair AX760 PSU