视频文件格式法医取证分析

外文翻译
视频文件格式法医取证分析(中文7600字,英文5400字)
托马斯.格，安德烈•菲舍尔，马蒂亚斯•基什内尔
研究公司，德累斯顿，德国
明斯特大学，信息系统部门，明斯特,德国
摘要
视频文件格式标准只是定义了有限数量的强制特性并留下了解释的余地。对视频法医认证来说，设备制造商和软件供应商的设计决策是卓有成效的资源。本文详细地探讨了AVI、类似MP4的移动手机视频流和数码相机。我们使用自定义的解析器来提取视频的所有文件格式结构，视频来自全部19个数码相机型号，14个手机型号，和6个视频编辑工具箱。我们报道了在选择容器格式,音频和视频压缩算法,采集参数,和内部文件结构，相当大的差异。在组合中，这些特性可以帮助验证数字视频文件在法医设置中通过区分原始视频和后期处理，验证所谓的文件来源，或识别真正的采集装置模型或处理软件，用于视频处理。
 
关键词：数字取证；文件格式；元数据；视频；认证

外文原文
Forensic analysis of video file formats
abstract
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 structures of videos from overall 19 digital camera models,14 mobile phone models, and 6 video editing toolboxes. We report considerable differences in the choice of container formats, audio and video compression algorithms,acquisition parameters, and internal file structure. In combination, such characteristics can help to authenticate digital video files in forensic settings by distinguishing between original and post-processed videos, verifying the purported source of a file, or identifying the true acquisition device model or the processing software used for video processing.
2014 The Authors. Published by Elsevier Ltd on behalf of DFRWS. This is an open access article under the CC BY-NC-ND license.
Keywords:Digital forensics; File format; Metadata; Video; Authentication;
Introduction