Editing Digital video recorder (section)

==== Hardware features ====
[[Computer hardware|Hardware]] features of security DVRs vary between manufacturers and may include but are not necessarily limited to:
* Designed for [[19-inch rack|rack]] mounting or desktop configurations.
* Single or multiple video inputs with connector types consistent with the analogue or digital video provided such as [[coaxial cable]], [[twisted pair]] or [[optical fiber cable]]. The most common number of inputs are 1, 2, 4, 8, 16 and 32. Systems may be configured with a very large number of inputs by networking or [[Bus (computing)|bussing]] individual DVRs together.
* Looping video outputs for each input which duplicates the corresponding input video signal and connector type. These output signals are used by other video equipment such as matrix switchers, [[multiplexer]]s, and [[video monitor]]s.
* Controlled outputs to external video display monitors.
* Front panel switches and indicators that allow the various features of the machine to be controlled.
* Network connections consistent with the network type and utilized to control features of the recorder and to send and/or receive video signals.
* Connections to external control devices such as [[Computer keyboard|keyboards]].
* A connection to external pan-tilt-zoom drives that position cameras.
* Internal CD, DVD, VCR devices typically for archiving video.
* Connections to external [[storage media]].
* Alarm event inputs from external security detection devices, usually one per video input.
* Alarm event outputs from internal detection features such as motion detection or loss of video.