Reliance runs multiple TV channels and JioCinema streaming app through its media unit Viacom18 and has a sizeable hold over India's $28-billion media and entertainment market
Emmerich directed the original "Independence Day", whose cast members Jeff Goldblum, Bill Pullman and Judd Hirsch return in this movie alongside new additions such as Liam Hemsworth.
"It is now 20 years later since the world has been rebuilt and it has tried to get prepared for a new attack; there is a new generation however, many of the old guard are back as well," Emmerich told reporters about the film in Berlin on Thursday.