目的嵌入式数字视频录像机(digital video recorder,DVR)系统中的多媒体(视频/音频)数据往往是电子数据司法鉴定领域的重要证据,然而在司法鉴定实践中,DVR被意外删除、恶意删除或遭受损坏导致DVR中数据无法访问的现象屡见不鲜,这无疑使...目的嵌入式数字视频录像机(digital video recorder,DVR)系统中的多媒体(视频/音频)数据往往是电子数据司法鉴定领域的重要证据,然而在司法鉴定实践中,DVR被意外删除、恶意删除或遭受损坏导致DVR中数据无法访问的现象屡见不鲜,这无疑使得电子数据鉴定过程变得更加困难。方法结合司法鉴定工作实务,主要以存储于Micro SD卡中无法访问的DVR视频文件为例,开展了基于文件分配表(file allocation table,FAT)32文件系统和H.264相关文件格式的DVR数据恢复研究。结果通过探讨的两种方法恢复的视频文件可以正常访问,同时还可通过运行脚本文件实现DBR的自动重建。结论探讨的两种方法可有效恢复FAT32文件系统的DVR数据和H.264格式的DVR数据。此外,通过运行脚本文件自动重构DBR,可有效提高司法鉴定效率。相关鉴定技术的研究对嵌入式DVR视频的鉴定技术研究具有重要的理论研究意义和实践应用价值。展开更多
MIXED is a digital preservation project. It uses a strategy of converting data to intermediate XML. In this paper we position this strategy with respect to the well-known emulation and migration strategies. Then we de...MIXED is a digital preservation project. It uses a strategy of converting data to intermediate XML. In this paper we position this strategy with respect to the well-known emulation and migration strategies. Then we detail the MIXED strategy and explain why it is an optimized, economical way of migration. Finally, we describe how DANS is implementing a software tool that can perform the migrations needed for this strategy.展开更多
文摘MIXED is a digital preservation project. It uses a strategy of converting data to intermediate XML. In this paper we position this strategy with respect to the well-known emulation and migration strategies. Then we detail the MIXED strategy and explain why it is an optimized, economical way of migration. Finally, we describe how DANS is implementing a software tool that can perform the migrations needed for this strategy.
