However, I can suggest some possible topics for a video on ethics and integrity for UPSC mains:

1. The importance of ethical values in governance and public service
2. Understanding the role of integrity in decision-making
3. Dealing with ethical dilemmas in the workplace
4. The impact of corruption on society and ways to combat it
5. Building a culture of transparency and accountability in organizations
6. The role of moral leadership in promoting ethical behavior
7. Ethics in the age of technology and social media
8. Balancing personal and professional ethics
9. The ethics of whistleblowing and reporting misconduct
10. The significance of ethical behavior in building trust and credibility.

These are just a few possible topics that could be covered in a video on ethics and integrity for UPSC mains. The video could include case studies, real-life examples, and practical tips for students to apply ethical principles in their personal and professional lives.