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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