@fluddsskark Valve's source games have used Bink Video (.bik) in the past. By today's standards it's really inefficient
The old TF2 intro (bik) was 768p @ 23.98 fps
New intro (webm) is 1080p @ 30 fps and is much, much smaller
The other ingame videos were converted too.
Yes, I know you were always able to replace the intro. Being able to drop a webm into a folder makes it much easier and silly now (Bink video is ancient and it suckz)