![]() ![]() This chapter describes a method for identifying timestamps in carved digital video recorder footage. As a result, it is very tedious for a digital forensic professional to manually locate frames of interest. Unlike a normal video stream, a recovered video stream comprises frames that are not in chronological order. However, the majority of the recovered video files are often fragmented. The partially-overwritten files, which are present in slack space, can be recovered via data carving. ![]() As closed-circuit television cameras operate continuously, video files are constantly stored on the hard drives, with the new files periodically overwriting older files. ![]() The camera outputs are processed and stored on hard drives in standalone digital video recorders. Closed-circuit television cameras conduct round-the-clock surveillance to capture video evidence of illegal activities and suspects. ![]()
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