One of the new additions to Mario Kart 8 is Mario Kart TV The mode allows you to save your race replays and have a bit of fun editing them.
The interface is incredibly basic, with only a handful of choices and selections. You can change the replay’s focus based on character or race events. For example, you can have the video focus on some specific things like item usage, crashes, or my personal favorite, drifting. Mario Kart TV then cuts pieces together, leaving you with a cohesive video of 15, 30, 45, or 60 seconds, depending on which selection you make.
If you like, you can also have the entire race in the replay, which is nice for showcasing your personal routes and choices.
The best feature here is the super-easy slo-mo. All you have to do is hit the B button, and the replay is slowed around 800%, producing dramatic, gorgeous moments that really let you appreciate all the details worked into the game that you don’t normally see during the races’ chaos.
When you’re done, you can upload your video straight to YouTube, which is pretty nifty...but there’s no way to save your slo-mo or rewind edits in the published footage. That keeps Mario Kart TV from being perfect, but you can always capture the epic slow motion shots with an external recorder.
This is a good base to build on, and hopefully enough people use it - that way Nintendo will justify spending even more time improving it