Most battles in Super Smash Bros. for Wii U can be saved as replays by pressing the Y Button on the results screen. Saved replays can be shared with other players within the game, and can now also be posted on YouTube and the Replay Viewing Community on Miiverse.
Uploading your favourite replays to YouTube is handy, as it means they can be watched on any device compatible with YouTube. Also, replays saved in-game can't be watched after certain game updates, but you can watch replays uploaded to YouTube even after the game has been updated.
Please note that replays longer than three minutes cannot be uploaded to YouTube.
To upload a replay to YouTube, you'll need a Google Account and a YouTube channel for that Google Account.
If you do not have a Google Account, please create one by selecting "Create an account".
Once you have created a YouTube channel, you're ready to upload videos.
You'll need an existing email address and a mobile phone to create and verify your Google Account and its associated YouTube channel. You must be aged 13 or older to create a Google Account.
Videos uploaded to YouTube can also be posted to Miiverse.