Mood: The mood of the video appears to be melancholic and introspective, with a sense of longing. The theme seems to revolve around feelings of isolation or solitude, as hinted by the title 'Alone'. The emotions conveyed are somber and contemplative, with a focus on the pain of being alone.

Environment: The setting of the video seems to be a cold, wintry landscape, possibly a snowy mountain range. The background is a stark white sky with snow-capped mountains in the distance, suggesting a remote and isolated location. The environment is serene yet hauntingly beautiful, adding to the melancholic mood of the video.