It's specifically mentioned as a streaming service for the CapitalOne SavorOne and Savor cards:

https://www.capitalone.com/learn-gro...ck-categories/

With SavorOne it would be 3% cash back, with Savor it would be 4% cash back (but with a $95 annual fee so you need to spend more than $9500 a year on dining, entertainment and streaming to make that card worthwhile).