In this section, we will introduce the video data analysis to illustrate the video bitrate and several types of traffic noise using the classic movie Titanic. In the following parts, nginx and ffmpeg is used to push the encrypted video traffic, Chrome downloader is used to provide the irrelevant traffic, and wondershaper is used to simulate the weak network environment with the random interference of bandwidth limitation, RTT, and packet loss.
When providing video streaming services for users, edge devices can also provide other multimedia services from different websites at the same time (such as encode offloading or download acceleration), resulting in the eavesdropped traffic containing multiple types of packets, which make it difficult to identify the video traffic. Figure 3 shows the traffic from a raspberry edge server, which contains only video stream and both video stream and download stream.
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