Security of a robust transcoding-resistant watermarking for H.264 standard

The H.264 standard is widely deployed for high-quality consumer video applications such as DVD and HD video on the internet. In current times where videos are easily shared live on social media and messaging mobile Apps, consumers need to be able to determine the ownership of these videos against being illegally distributed without proper acknowledgements to the source, as well as take actions against those who spread false videos. Robust watermarking schemes are popularly applied techniques to solve these problems. These types of schemes need to achieve robustness against modification attacks on the embedded watermark. In this paper, we focus on a recent robust watermarking scheme and analyse its robustness. We present attacks that enable malicious buyers to modify the watermarks embedded by the owner.