"It'll be OK" is a song and musical audio track by Sherclop Pones (who are Griffin Lewis and Jenny Nicholson). New WD knowledge base item:
https://www.wikidata.org/wiki/Q131201137

About a video titled "Twilight Sparkle & Shining Armor's Song - It'll Be Ok - Friendship Is Witchcraft - Episode 8":
> "Kiwi6 shut down on December 31, 2022. All user data was permanently deleted and can no longer be recovered." It had 645,911 users. Example link = http://kiwi6.com/file/pxy5n69e2c from YouTube video description https://inv.nadeko.net/watch?v=z88WWrnROEs

 >>/11289/
> Sonichu www.wikidata.org/wiki/Q131036309
Should be "instance of: fictional hybrid" instead of "instance of: hybrid".

 >>/11291/
> ponibooru.org www.wikidata.org/wiki/Q131101232
Should maybe be "distributed by: BitTorrent" instead of "distribution format: BitTorrent".

 >>/11316/
I watched that video and I think it was stuttery, like skipping a significant amount of frames multiples times. Not a smooth 30/however-many frames per second. That video was uploaded by UniverseKiss and I downloaded its >1000 comments IIRC. The one uploaded by Pinkie Pie is like the same video but smoother.