A content authentication scheme of H.264 video based on compressed

According to the DCT distribution of the intra frame in H.264, we proposed a new watermarking algorithm that can realize the content authentication and the integrality authentication respectively. The program content through the signature symbol normalized watermark is embedded in the video of the DCT coefficients, and the bit streams achieve a better balance between rate-distortion; by limiting the certification threshold, the watermark can be embedded coding of the weight of certain attacks resistance to achieve the content authentication. Experiments show that the program extract the watermark without full decoding of the compressed stream, and for the blind extraction, the algorithm can meet the needs of real-time random testing.