Converting Pelco exported video files
WHAT IS A DVR?
A DVR is a video recording and pl
ayback device that inco
rporates all of the essential capa
bilities of a VCR but adds significan
t advantages. Like
a VCR, video is recorded from one or more cameras and stored for later playback and retrieval; however, in a DVR, video data is
recorded and
stored on a hard disk instead of
magnetic tape.
Storing video in
this manner facilitates
instant, rand
om access to data, as opp
osed to sequential
access inherent to tape-based recording. This means no fast-forwarding or rewinding is necessary to locate the data a user want
s to view or
export. Another key advantage over tape is decreased maintenance. With no need to replace tapes, DVRs with hard disks can be le
ft unattended
for extended periods of time. Since video remains in the digital domain, data is easy to store, transport, and manipulate. Unli
ke analog video
recordings, digital data does not suffer from a loss in quality wh
en copied or moved from device to device. Because DVRs rely o
n hard disks
instead of tape, data storage is virtually unlimited. Video data
can also take advantage of comp
ression technology
to increase
the efficiency of
storage media. Modern DVRs, such as the DX8000, allow users to record, play back, and view live video simultaneously. Keeping d
ata digital
means video can be easily backed up to a variety of storage media.
It also means that alphanumeric
information, such as date, t
ime, and
transaction statistics,
can be synchronously recorded with video.
×