Implementing Video Security via IP as part of

your School Safety Program

Mark Knaack

Technology Director Branch-ISD

Outline for the Session

Define types of systems Advantages/shortcoming of Video Technical Issues Policy Issues Q&A

Legacy vs. Hybrid vs. IP

Legacy Systems Dedicated Coax Wiring VCR’s and lots of Tapes Limited

Search/Intelligence Capability

Typically Centrally Controlled and Monitored

Hybrid Systems

Analog Cameras Record to DVR DVR can be remotely

monitored via IP

IP Systems Use existing Infrastructure* File Server or DVR Storage Can be centrally and remote monitored

Advantages of IP Video Uses Cat 5 wiring and

Ethernet, technology that schools are comfortable with

Autopilot – no tapes to change/archive

No image degrading due to old tapes

Intelligent Video – Searches, scans etc

Shortcomings of Video Typically it is a

reactive technology PTZ cameras only

see what they are looking at

Lighting is important, but you can see in the dark if you plan for it

Technical IssuesNetwork Issues

Plan for a lot of traffic - VLAN or use a Separate segment if needed

Cheaper Cameras tear up bandwidth, testing is critical

Power Over Ethernet – Cost, wattage and compatibility issues

Lighting issuesNight time, Backlighting, Reflections

Cameras

Still,

Zoom

&

Pan

Tilt

Zoom

Day Vs Day/Night

Not all Cameras can do night

Total Darkness

Software CompatibilityMake sure the

Camera you plan to use is supported by your software!

PTZ gets tricky, just because the camera can do it doesn’t mean the software will support it. (Ask me how I know this?)

Frame Rates 30 Fps= Best of Breed (Casino Quality)

Motion pictures only use 24 Fps

5 Fps = Standard Quality (Retail) 1 Fps = Space Saver (Parking Lots etc)

30 Frames/Second

4 Frames/Second

1 Frame/Second

Resolution Common

Intermediate Format (CIF)

1 CIF image is common in Analog systems

4 CIF is the IP standard

Many cameras must give up FPS to gain Resolution – Be Aware!

Video Format MPEG-4 = Most efficient

Only transmits changes in the scene Can lose a little detail Licensed Technology

You may need a licensed viewer to use MPEG-4

M-JPEG = Better Image Quality Transmits the entire image, every time Uses up to 4 times the bandwidth and drive space as MPEG-4

Be sure what your software supports

Server ConsiderationsDisk access speed is critical on

recording drive (SCSI)Archive drive speed less critical

(SATA)CPU and Memory will vary by

softwareYou can do more cameras if the

frame rate and picture size is reduced, it all comes down to resources

SoftwarePurchased Products

Multi-server SystemsONSSI www.onssi.comLENEL www.lenel.comDIVR http://www.divrsystems.com

Single Server systemsSony www.sony.comAxis www.axis.com

Open SourceZone Minder www.zoneminder.com

Policy IssuesDocument Retention Policy

30 Days for Video

EavesdroppingAudio in public spaces is not

permittedAudio in classroom may be

permitted

Privacy ConcernsWe require two administrators to

review video

Board Policy Make sure your School Board is on board. Sell this as part of your school safety plan, otherwise thought of big brother will come up.

Planning a System

What do you want to cover Mark hotspots on a

map Do a site survey

with cameras so everyone knows what they are getting

#1 Back hall with 211

#2 Back Hall with 212

#3 Back hall Flat with 212

Back Hall Area

Pick One

Installation Self Install

Can be done but is time consuming

Vendor Install Look at many and check

references Decide what bells and

whistles are actually going to be used

User Policies

Who needs access Guard station Principal Liaison Officer (PDA) Local Police Clerical Staff

Plan for Disaster Multiple viewing

locations Training for key

personnel Tamper Resistant

Cameras email/alarm you if

they are moved or blocked

Q and A?

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