DidYouKnowGaming wins counter-DMCA against Nintendo, "Heroes of Hyrule" video restored on YouTube
Shane Gill, the creator of DYKG, worked on a counter-DMCA through YouTube's system, which allows for a creator to counter any kind of flagged video under a DMCA notice. YouTube's system is known to falsely flag videos that might have any kind of visual or audio resemblance to something in their own database, but in this case, it seems like the DMCA came directly from Nintendo, and not through a 3rd party nor a false account.
An interesting instance in all of this matter, is that, according to Shane Gill, Nintendo's claim about the video was that Did You Know Gaming was using "unauthorized material", and while this could very well mean unauthorized use of either some imagery or audio, Gill implies that the sole purpose of Nintendo wanting the video removed was because they didn't want anything uncovered by DYKG to be on the public eye.
However, there's still the possibility that, given the circumstances, Nintendo could try to take the people in charge of the channel directly to court to remove the video from YouTube once and for all, but for that they'd have to fight through the Fair Use instance of the copyright law, which is what DYKG gaming used in their counter-claim.
Restored "Heroes of Hyrule" video on YouTube