The 11 minutes of footage is put together by One Riot One Ranger Productions.
Regarding the actual WB movie, Guillermo del Toro recently stated it will be its own thing before hopefully being connected to the rest of the DC cinematic universe. NBC also has the Constantine TV series debuting next month.
Justice League Dark features John Constantine leading Zatanna through a city with the promise of rescuing her father from Hell. They meet a disguised Deadman along the way. The three are forced to work together and fight a dark force made flesh in order fulfill Constantine’s promise to Zatanna. Look out for a nod to another familiar Justice League Dark character in the final seconds of this film.