nuke.webm
The recent Horizon update of Counter-Strike: Global Offensive introduced the Panorama UI, in which one of its features is its main menu, showing your character model in front of a background.
That background is a VP8-compressed video of Nuke at 29.97fps. There are three different resolutions of this background, but for showcase purposes, I uploaded the highest resolution (1080p) version.
What this is actually telling me, though, is that Valve actually added VP8 and VP9 video support for the Source engine, and it presumably exists in Source 2. The Source engine already supported Bink video, as Bink files existed for basically every Valve game up to Portal 2, but Valve going for VP9 says that they're more interested in this codec than updating to the Bink 2 codec.