Mood: The mood of this video appears to be romantic and intimate, with a focus on the emotional connection between two people. The theme seems to revolve around love and togetherness, as suggested by the title 'Ek Tera Saath' which translates to 'One With You' or 'Together'. The overall emotion conveyed is warm and sentimental.

Environment: The environment or setting of the video seems to be a dimly lit or indoor setting with a blue background, which adds to the romantic ambiance. The focus is on the couple, and the simplicity of the background suggests that the emphasis is on their interaction and emotions rather than on elaborate settings or actions.