Kevin Hart, Katy Perry making YouTube originals

YouTube has unveiled a slate of original programmes including shows from Ellen DeGeneres, Katy Perry, Demi Lovato and Kevin Hart.

The series will all carry advertising and be on the main YouTube platform, not the subscription-based Red service.

Ellen’s Show Me More Show will be a twice-weekly series in which DeGeneres speaks to stars.

YouTube vloggers Rhett & Link will star in Good Mythical Morning and take on stunts and take part in pranks and challenges.

Kevin Hart: What the Fit? sees the comedian and celebrity friends trying out ridiculous workout routines.

I Am: Demi Lovato and Katy Perry Live Special, meanwhile, goes behind the scenes with the eponymous music stars.

YouTube also confirmed Ryan Seacrest talent series Best.Cover.Ever.

“We’re excited to partner with top creators and world-class production companies to offer these new shows to audiences globally—on the platform where the world chooses to watch over a billion hours of video every day,” YouTube said in a blog post.

“This vibrant fan and creator community is also why brands turn to YouTube. And we’re excited that Johnson & Johnson Consumer Brands will be our first advertising partner of this new content [for Best.Cover.Ever].”