Axis P3905-R User Manual

AXISP3905-RNetworkCamera
Aboutvideosettings
•Maximumframerate.Toavoidbandwidthproblems,theframerateallowedtoeachviewercanbeLimitedtoaxed
amount.Alternatively,theframeratecanbesetasUnlimited,whichmeanstheAxisproductalwaysdeliversthehighest
frameratepossibleunderthecurrentconditions.
•Overlaysettings.SeeAboutoverlaytextonpage21.
ClickSavetoapplythenewsettings.
AboutH.264
H.264,alsoknownasMPEG-4Part10/AVC,isavideocompressionstandardthatprovideshighqualityvideostreamsatlowbitrates.
AnH.264videostreamconsistsofdifferenttypesofframessuchasI-framesandP-frames.AnI-frameisacompleteimage,whereas
P-framesonlycontainthedifferencesfrompreviousframes.
AboutGOPlength
AGroupofPictures(GOP)containsoneI-framefollowedbyanumberofP-frames.TheGOPlengthisthenumberofframes
betweentwoI-frames.
EqualvaluesforGOPlengthandframerateresultinoneGOPpersecond.AhigherGOPlengthvalueresultsinmoresmall-sized
P-framesandlessbig-sizedI-frameswhilekeepingthesameframerate.Inotherwords,ahighGOP-lengthvaluesavesbandwidth,
butthevideoqualitymaydecrease.AlowGOP-lengthvalueincreasesthevideoqualitybutrequiresmorebandwidth.
AboutH.264proles
TheAxisproductsupportsthefollowingH.264prole(s):
•Baseline:UsetheBaselineproleiftheclientdoesnotsupportCABACentropycoding.
•Main:TheMainproleusesCABACandprovidesabettercompressionwithmaintainedvideoquality.Itrequiresalarger
amountofprocessingpowertodecodethantheBaselineprole.
Aboutbitratecontrol
Bitratecontrolisusefultomakesurethevideostreamingdoesnottakeuptoomuchbandwidth.
Aboutvariablebitrate
Variablebitrate(VBR)adjuststhebitrateaccordingtotheimagecomplexity.Whentheactivityinthesceneincreases,VBRadjusts
thebitrateaccordingtothecomplexity,usingupmorebandwidthforincreasedactivityinthescene,andlessforlowersceneactivity.
Variablebitrateissuitableifthereisasurplusinbandwidth,wheretheincreasedbitratemaynotbeanissue.
Aboutconstantbitrate
HowtosetanH.264prole
1.TochangethesettingsforallH.264streamsthatdonotuseastreamprole,gotoVideo>VideoStream>H.264.
2.ToincreaseordecreasethenumberofframesperGOP,settheGOPlength.
3.SelectoneoftheH.264proles.
4.Selectoneofthefollowing:
-Variablebitrate
-Maximumbitrate
5.IfyouselectMaximumbitrate,selectwhichvariabletoprioritizeinthePrioritydrop-downlist.
17

Axis P3905-R Specifications

General

Type	IP security camera
PTZ control	Yes
Placement supported	-
Connectivity technology	Wired
Form factor	Dome
Product color	White
Housing material	Aluminum
Maximum resolution	1920 x 1080 pixels
Supported video modes	1080p
Video formats supported	AVC, H.264, M-JPEG, MPEG4
Pan range	-30 - 30 °
Tilt angle range	15 - 90 °
Angle of rotation	175 °
Minimum illumination	0.2 lx
Sensor type	CMOS
Optical sensor size	1/2.8 \
Optical zoom	- x
Flash memory	128 MB
Compatible memory cards	MicroSD (TransFlash), MicroSDHC, MicroSDXC
Maximum memory card size	64 GB
Ethernet LAN	No
Supported network protocols	IPv4/v6, HTTP , HTTPS a , SSL/TLS a , QoS Layer 3 DiffServ , FTP , CIFS/SMB, SMTP , Bonjour , UPnP™, SNMP v1/v2c/v3(MIB - II), DNS, DynDNS, NTP , RTSP , RTP , T CP , UDP , IGMP , RT CP , ICMP , DHCP , ARP , SOCKS, SSH
Power source type	PoE
AC input frequency	50 - 60 Hz
Operating temperature (T-T)	-30 - 60 °C
Operating relative humidity (H-H)	10 - 95 %