Mood: The mood of the video appears to be melancholic and romantic, with a sense of longing. The theme seems to revolve around love and separation, with the title 'Sajni' suggesting a term of endearment. The overall emotion conveyed is one of yearning and nostalgia.

Environment: The setting of the video appears to be a snowy mountainous region, possibly the Himalayas. The background features a serene and breathtaking landscape with snow-capped mountains and a subtle gradient of blue and orange hues, suggesting a sunset or sunrise. The environment seems peaceful and majestic, contrasting with the emotional turmoil that may be depicted in the video.