Mood: The mood of the video appears to be energetic and celebratory, with a sense of joy and revelry. The theme seems to be related to music, dance, or a festive occasion, given the title 'Mera Nachan Nu' which translates to 'My Dancing' in English. The overall emotion conveyed is one of excitement and enthusiasm.

Environment: The setting of the video appears to be a crowded, possibly indoor or outdoor gathering, with a large group of people in the background cheering and raising their hands. The atmosphere seems lively, with the central figure dancing or moving amidst the crowd.