Axis F34 User Manual

AXISF34MainUnit
Video
•Maximumframerate.Toavoidbandwidthproblems,theframerateallowedtoeachviewercanbeLimitedtoaxed
amount.Alternatively,theframeratecanbesetasUnlimited,whichmeanstheAxisproductalwaysdeliversthehighest
frameratepossibleunderthecurrentconditions.
•Overlaysettings.SeeOverlayonpage23.
ClickSavetoapplythenewsettings.
H.264
H.264,alsoknownasMPEG-4Part10/AVC,isavideocompressionstandardthatprovideshighqualityvideostreamsatlowbitrates.
AnH.264videostreamconsistsofdifferenttypesofframessuchasI-framesandP-frames.AnI-frameisacompleteimagewhereas
P-framesonlycontainthedifferencesfrompreviousframes.
TheH.264streamsettingscanbeconguredfromtheVideo>VideoStreampage.SelecttheH.264tab.Thesettingsdenedinthis
pagewillapplytoallH.264streamsthatdonotuseastreamprole.
TheGOPlengthisthenumberofframesbetweentwoconsecutiveI-frames.IncreasingtheGOPlengthmaysaveconsiderablyon
bandwidthrequirementsinsomecases,butmayalsohaveanadverseaffectonimagequality.
TheAxisproductsupportsthefollowingH.264prole(s):
•Baseline.TheBaselineproleisrecommendedforclientsthatdon’tsupportCABACentropycoding.
•Main.TheMainproleprovideshighercompressionwithmaintainedvideoqualitycomparedtotheBaselineprolebut
requiresmoreprocessingpowertodecode.
•High.TheHighproleprovidesreducedbitrateandhighercompressionwithmaintainedvideoqualitycomparedtothe
Mainprolebutrequiresmoreprocessingpowertodecode.
ThebitratecanbesetasVariablebitrate(VBR)orMaximumbitrate(MBR).VBRadjuststhebitrateaccordingtotheimage
complexity,usingupmorebandwidthforincreasedactivityintheimage,andlessforlowerimageactivity.Whentheactivityin
thesceneincreases,thebitratewouldusuallyincreaseaswell.Ifthereisasurplusinbandwidth,thismaynotbeanissueand
selectingVariablebitrate(VBR)willbesufcient.Butifbandwidthislimited,itisrecommendedtocontrolthebitratebyselecting
Maximumbitrate(MBR).Whentheactivityinthesceneincreases,VBRadjuststhebitrateaccordingtothecomplexity,usingup
morebandwidthforincreasedactivityinthescene,andlessforlowersceneactivity.MBRallowsyoutosetatargetbitratethat
limitsthebandwidthconsumption.
TheMBRtargetbitrateworksliketheceilingofatent.Itlimitsthebitrate,whilemaintainingsomeexibility.Thebitrate
maybounceupanddownwithinthesettargetbutwhenitnearsthesettargetvalue,thelimitationkicksin.However,because
MBRwillalwaysprioritizeacontinuousvideostream,itallowstemporaryovershootsfromthetargetbitrate.Becausesettinga
targetvaluepreventsthebitratefromincreasing,framerateandimagequalityareaffectednegatively.Topartlycompensatefor
this,selectwhichvariableshallbeprioritized,framerateorimagequality.Notsettingaprioritymeansthatframerateand
imagequalityareequallyaffected.
Thecurrentbitratecanbesettoappearastextoverlay.UnderOverlaySettings,selectIncludetextandenterthemodier
#bintheeld.
Toapplythesettings,clickSave.
Axis’ZipstreamTechnology
Zipstreamisabitrate-reductiontechnologyoptimizedforvideosurveillance.ZipstreamreducestheaveragebitrateintheH.264
streambyremovingunnecessarydataandmakesitpossibletoallowhigherresolutions,reducestoragecostortokeeprecordingsfor
alongertime.Toreducethebitrate,Zipstreamreducesthenumberofbitsintheareasoftheimagethatarelessinterestingfroma
videosurveillanceperspective,forexamplethebackground.Imagedetailsthatareimportantforforensicvideoanalysis,forexample
facesandlicenseplates,arepreservedwithenoughnumberofbits.
TheseZipstreamstrengthoptionsareavailable:
•Off.Zipstreamdisabled.
•LowestZipstreamstrength.Lowbandwidthreduction.Novisiblequalitydegradationinmostscenes
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Axis F34 Specifications

General

Product color	Multicolor
Color	-
LED type	IR
Sensor type	CMOS
Camera included	No
Housing material	Plastic, Zinc
Number of cameras	4
Placement supported	Indoor
Minimum illumination	0.4 lx
Connectivity technology	Wired
Horizontal rotation angle	- °
Surveillance camera form factor	Dome
Flash memory	256 MB
Internal memory	1024 MB
Channels quantity	4 channels
Recorder included	Yes
Storage media type	Flash
Total storage capacity	256 GB
Compatible memory cards	SD, SDHC, SDXC
Display diagonal	- \
Storage temperature (T-T)	-40 - 65 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 85 %

Weight and Dimensions

Camera weight	96 g
Recorder width	121 mm
Recorder height	30 mm
Recorder weight	238 g