Mood: The mood of the video appears to be dark, ominous, and eerie, suggesting a theme of mortality, death, or the supernatural. The use of black and white tones with a hint of red creates a sense of foreboding and unease. The title 'DEADHEADS' implies a focus on death or the afterlife.

Environment: The environment or setting of the video seems to be a post-apocalyptic or dystopian world, possibly with a zombie or undead theme. The background image of a crowd of people with a sense of chaos and disorder adds to this inference. The overall aesthetic suggests a gritty, intense, and possibly horror-related setting.