Mood: The mood of the video appears to be melancholic and introspective, with a sense of longing. The theme seems to revolve around heartbreak, separation, or unrequited love, as hinted by the title 'I'll Be Waiting'. The overall emotion conveyed is one of yearning and anticipation.

Environment: The setting of the video seems to be a dimly lit, possibly indoor location with a door or gate in the background. The dark and muted color palette creates a somber atmosphere, suggesting that the video may feature a dramatic or emotional narrative.