Mood: The mood of the video appears to be lively and energetic, with a focus on music and entertainment. The theme seems to be a compilation of popular Bollywood songs from 2019, evoking feelings of excitement and nostalgia. The overall emotion conveyed is upbeat and celebratory.

Environment: The setting of the video seems to be a modern, vibrant, and dynamic environment, possibly a music studio or a lively party scene. The presence of various images of people in different settings suggests a diverse and eclectic atmosphere.