Mood: The mood of the video appears to be melancholic and nostalgic, with a sense of longing. The title 'Can't Forget You' and the subtitle 'Tujhe Bhula Diya' suggest a theme of heartbreak and remembrance. The overall tone seems to be romantic and introspective.

Environment: The environment or setting of the video is not explicitly shown, but based on the attire of the person in the image, it appears to be a modern, urban setting, possibly a studio or an indoor location with a stylish backdrop. The focus seems to be on the emotional expression of the artist rather than the physical environment.