Forensic analysis of video file formats

Forensic analysis of video file formats

Video file format standards define only a limited number of mandatory features and leave room for interpretation. Design decisions of device manufacturers and software vendors are thus a fruitful resource for forensic video authentication. This paper explores AVI and MP4-like video streams of mobile phones and digital cameras in detail. We use customized parsers to extract all file format struc...

Multifractal analysis of 3D video representation formats

One of the main properties of a three-dimensional (3D) video is the large amount of data, which impose challenges for network transport of videos, in applications such as digital video broadcast (DVB), streaming over IP networks, or for transmission over mobile broadband. Addressing these challenges requires a thorough understanding of the characteristics and traffic properties of 3D video form...

Compare Music File Formats

Image file formats

This tutorial is about image file formats: what are they, what are they used for, what are their differences and how we choose between them. The tutorial assumes a basic understanding of general digital imaging; of which a quick summary of important features is provided below. Pixel: a digital image is represented as a rectangular grid of dots, where each dot has a specific spatial position and...

Forensic analysis of deduplicated file systems

Deduplication splits files into fragments, which are stored in a chunk repository. Deduplication stores chunks that are common to multiple files only once. From a forensics point of view, a deduplicated device is very difficult to recover and it requires a specific knowledge of how this technology operates. Deduplication starts from a whole file, and transforms it in an organized set of fragmen...