In the total runtime of 11 minutes and 30 seconds (including credits), only 133 words (35 lines) of dialogue are spoken.
Multiple versions of the final scene were filmed on the last day of production, as director Sam Bartz was originally unsure as how to the film should appropriately conclude. Bartz's mentor Antonio Méndez Esparza saw a cut of the film that showed Daniel turning his car around (presumably to return home) and convinced Bartz that seeing Daniel make such a humble decision was the best way for the story to end.
Production designer Bethany Ruth Miller came up with the film's color palette, which is primarily made up of grey, purple, black, blue, and yellow. These are the colors that constitute a bruise, which was done to externally convey Daniel's hidden pain.
The jacket worn by actress Inga Eiss also makes an appearance in another short film created by the Florida State University College of Motion Picture Arts, "Remember Owen", which began filming just two months later. Several of the crew members that worked on Void (including director of photography Zarmala Gilani and producer Lucas Omar) also worked on "Remember Owen".
Four scripted scenes were removed from the final cut of the film. Editor Zarmala Gilani (who was also the film's cinematographer, camera operator, and colorist) thought that the film's pacing was dramatically improved as a result. Three of the deleted scenes formed the beginning of the film's first cut, which introduced the audience to Daniel and Jane at a clinic and observed them as they returned home. Director Sam Bartz felt that the removal of these scenes created stronger narrative tension and added mystery.