A scrambling technique embedding soundtracks into videos for streaming media
Xuefei Li, Yasutoshi Miura, Seok Kang, Yuji Sakamoto · 2018 International Workshop on Advanced Image Technology (IWAIT) · 2018
In these years, streaming media have become very popular. In order to protect the legal copyright of streaming media, DRM (Digital Right Management) techniques are utilized widely. However, encryption, the most representative DRM technique, is difficult to install into real-time communication systems. In addition, existing DRM techniques for real-time communication are not supported by several widely-used web browsers. Scrambling, as a substitute to encryption, is suitable for real-time communication. In this paper, we propose a scrambling technique embedding soundtracks into videos. In the proposed technique, we embed audio data into quantized discrete cosine transform (qDCT) coefficients of the video data and generate scrambling at the same time during the video encoding process. After transmission, the streaming media data can be recovered during decoding process. We conducted experiments to investigate proper parameters to make the technique effective. Using the determined parameters, we conducted verification experiments to prove the effectiveness of the proposed technique.