Mood: The mood of this video appears to be calm and serene, with a hint of melancholy. The theme seems to be a romantic or introspective one, given the title 'Dekh Lena' which translates to 'Take a Look' or 'Observe', suggesting a reflective or contemplative tone.

Environment: The setting appears to be outdoors, possibly a rural or natural location with trees and greenery in the background. The presence of a fence or railing suggests that the video may have been filmed at a scenic spot, such as a hill station or a rural area with a view.