Try to list all DVR / CCTV Formats and their players. Might also be wise to save these players for playing these files long after the company has died.
.VSE player and .DV4 Player http://www.securicorp.com/support/avtech.html
.ARV and .DVR http://www.everfocus.com/tools.cfm
.DAV Player / converter http://www.genivtechnology.com/Resources/G4-HD-E
.787 converter http://scorpiontheater.com/videoviewer.aspx (video server E or Video Viewer)
.rdb viewer http://www.gesecurity.com/portal/site/GESecurity/menuitem.11620ebca5cc0a06574efe10140041ca/?vgnextoid=4f9fe4997e789110VgnVCM100000592d7003RCRD (GE DVMRE wavelet dvr - WaveReader (V4.2.47))
.VSR viewer - Video Web Server for CPD500W, STL780W