Newsbrief: Support for 48 and 60 frames per second video is coming to YouTube in the next few months, and Google has used video games to show off how this can look.
Footage of both
Battlefield: Hardline and
Titanfall show off the upcoming functionality, and
in a blog post, YouTube specifically mentions games as being a driving force behind adding support for 60fps.
The functionality is due to be provided to all YouTubers in the coming months. Note that you need to set a video to HD quality for the 60fps to kick in.