Under the banner “Streaming Rivers: The Past into the Present,” the New York African Film Festival (NYAFF) returns virtually December 2-6 with a spotlight on the cinema of two nations: Nigeria and the Sudan. Presented by Film at Lincoln Center (FLC) and African Film Festival, Inc. (AFF), this year’s regional NYAFF will screen six features and eight short films in the FLC Virtual Cinema, as AFF celebrates its 30th anniversary.