Authentication of MP4 file by joint data embedding in audio and video tracks

Nowadays, videos are mostly multiplexed with audios and wrapped in a multimedia container format. With speedy consumption of videos being a norm these days, authenticating video files (video + audio) becomes a challenging task. Conventional authentication schemes only focus on individual track such as audio or video. Therefore, in this work, we propose an authentication system where authentication values from video and audio are weaved by exploiting data embedding techniques in the compression/media layer and system layer. Specifically, the authentication value from video is embedded into audio, and vice versa. The authentication values for both audio and video are generated by using the key embedded in the system layer and cryptographic hash function. As a proof of concept, the ideas are implemented on MP4 format container and evaluated using various short movie clips downloaded from YouTube. Results suggest that imperceptible quality degradation and insignificant file size increment were achieved.