The rise of AI that can understand and describe videos is transforming how we interact with digital content. But what if this technology falls into the wrong hands, allowing unauthorized annotation and manipulation? Researchers have developed a clever solution called "Video Watermarking" to address these concerns. Imagine an invisible shield protecting your videos from unauthorized AI interactions. This cutting-edge technique imperceptibly embeds watermarks into key video frames, preventing misuse by AI models while preserving the viewing experience for humans. This approach works by targeting video frames with the most movement and changes, using what's called a "flow-based temporal mask." By focusing on these key frames, researchers can disrupt the AI's understanding of the video content with minimal alterations. The results are striking. In tests, watermarked videos caused AI models to generate garbled, nonsensical responses, effectively rendering the content meaningless to unauthorized viewers. This watermarking technique acts as a safeguard against misuse, ensuring that video data remains protected. But this is just the beginning. As video-based AI models evolve and become more sophisticated, securing our digital content will require ongoing innovation. Future research will explore the application of these techniques to real-time video streams and more complex scenarios. This technology has the potential to address the growing concerns about unauthorized video annotation and the potential for misinformation and privacy leakage.