Mood: The mood of the video appears to be a mix of youthful energy, playfulness, and possibly heartbreak. The theme seems to revolve around love, relationships, or coming-of-age experiences, given the title 'PYAAR KA PANCHNAMA', which translates to 'Love Letter' or 'Love Note'. The overall emotion conveyed is light-hearted with a hint of melancholy.

Environment: The setting seems to be urban, possibly a cityscape at night, judging by the blurred background lights. The environment could be a college or university setting, given the youthful appearance of the characters and the themes typically associated with such a demographic.