I'm a Private Investigator in need of identifying the manufacturer and model of the DVR surveillance system shown using the picture, knowing the system supported 16 cameras, was directly connected to a PC monitor on an LCD screen. The case I'm working on is a cold case murder from 2009 with it being highly likely the system could have been outdated even then. It's important for evidence involved in the case in order to fight it being submitted in court after an inadequate extraction/video recovery attempt by police "Forensic Investigator" resulted in the an inability to recover footage as preserved within system. I researched how DVR's have come along since the 2009-ish time period and have seen information stating manufacture's had special CODEC's that were unique to the manufacturer and after causing user frustration in scenarios such as mine the manufacturer's then came together to have standard generic CODEC's to keep everyone happy. This is similar to what the "Forensic Investigator" experienced for several days after being unable to identify the make/model.
Anything would be a great help. Even info about top 3 manufacturer's in mid-late 2000's would be a great start. Thanks!