Axis P1365 Mk II - Bitrate Management and Zipstream; Maximum Bitrate (MBR) Settings; Zipstream Technology Benefits

AXISP1365MkIINetworkCamera
VideoandAudio
Aboutmaximumbitrate
Ifyouhavelimitedbandwidth,werecommendMaximumbitrate(MBR).MBRallowsyoutosetatargetbitratetocontrolthe
bandwidthconsumption.Thetargetvaluelimitsthebitrate,butitmaintainsaexibilitytobeabletoprioritizeacontinuousvideo
stream.Consequently,theframeratemightneedtogodownandtheimagequalitymightdecrease.Topartlycompensateforthis,
youcanselectwhichvariableshallbeprioritized.Notsettingaprioritymeansthatframerateandimagequalityareequallyaffected.
HowtosetanH.264prole
1.TochangethesettingsforallH.264streamsthatdonotuseastreamprole,gotoVideo&Audio>VideoStream>H.264.
2.ToincreaseordecreasethenumberofframesperGOP,settheGOPlength.
3.SelectoneoftheH.264proles.
4.Selectonofthefollowing:
-Variablebitrate
-Maximumbitrate
5.IfyouselectMaximumbitrate,selectwhichvariabletoprioritizeinthePrioritydrop-downlist.
6.ClickSave.
Howtoincludecurrentbitrateinatextoverlay
1.GotoVideo&Audio>VideoStream>OverlaySettings.
2.IntheIncludetexteldenter#b.
3.ClickSave.
AboutZipstream
Axis’ZipstreamTechnologyisabitratereductiontechnologyoptimizedforvideosurveillance.Zipstreamreducestheaveragebitrate
intheH.264streambyremovingunnecessarydataandmakesitpossibletoallowhigherresolutions,reducestoragecostor
tokeeprecordingsforalongertime.
Toreducethebitrate,Zipstreamreducesthenumberofbitsintheareasoftheimagethatarelessinterestingfromavideo
surveillanceperspective,forexamplethebackground.Imagedetailsthatareimportantforforensicvideoanalysis,forexamplefaces
andlicenseplates,arepreservedwithenoughnumberofbits.
Axis’ZipstreamTechnologyforH.264conformstotheH.264standardandiscompatiblewiththird-partyclientsandVMSsolutions
thatdecodeH.264video.
Recommendeduseofbitratereduction
Zipstreamoffersanumberofbitratereductionpresets,fromLowtoExtreme.Lowbitratereductionisenabledbydefaultandis
safetouseinallapplicationswhilestillreducingthebitrate.
Forcloud-connectedcamerasorcamerasusingedgestoragethatneedtolimitthebitrateforincreasedstoragetimeitis
recommendedtoselecttheExtremebitratereduction.Thissettingissuitabletocombinewithmotiondetectiontriggeringand
variablebitrate(VBR)wherethebitrateisallowedtoadapttochangesincomplexityinthescene.
HowtosavebandwidthandstorageusingZipstream
ThebitratecontrollerbuiltintotheproductcanbecombinedwithZipstreamtoensureamaximumbitrate(MBR)limit.We
recommendusingVBRorMBRwithahighbitratelimittoenablethefullpotentialofZipstream.Forinstanceinrailwaysurveillance
whereattimesthereisalotofmovementinthesceneandwhereitisimportanttocapturedetails,suchasfacialfeatures,theMBR
shouldbesetto10Mbit/s(for1080presolutionat30fps).
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