Name: Axis P3915-R Mk II
Brand: Axis
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AXISP3915-RMkIINetworkCamera

VideoandAudio

3.SelectoneoftheH.264proles.

4.Selectoneofthefollowing:

-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.264streambyremovingunnecessarydata,whichmakesitpossibletostreamhigherresolutions,reducestoragecost

orkeeprecordingsforalongertime.

Toreducetheaveragebitrate,Zipstreamreducesthebitrateinareasoftheimagethatarelessinterestingfromavideosurveillance

perspective,forexamplethebackground.Imagedetailsthatareimportantforforensicvideoanalysis,forexamplefacesand

licenseplates,areencodedwithahigherbitrate.

Axis’ZipstreamTechnologyforH.264conformstotheH.264standardandiscompatiblewiththird-partyclientsandVMSsolutions

thatdecodeH.264video.

Recommendeduseofbitratereduction

Zipstreamoffersanumberofbitratereductionpresets,fromLowtoExtreme.Lowbitratereductionisenabledbydefaultandis

safetouseinallapplicationswhilestillreducingthebitrate.

WerecommendusingtheExtremebitratereductiontomaximizestoragetimeforcloud-connectedcamerasorcamerasusingedge

storage.Thissettingissuitabletocombinewithmotiondetectiontriggeringandvariablebitrate(VBR)wherethebitrateisallowed

toadapttochangesincomplexityinthescene.

HowtosavebandwidthandstorageusingZipstream

ThebitratecontrollerbuiltintotheproductcanbecombinedwithZipstreamtoensureamaximumbitrate(MBR)limit.We

recommendusingVBRorMBRwithahighbitratelimittoenablethefullpotentialofZipstream.

Forinstanceinrailwaysurveillancewhereattimesthereisalotofmovementinthesceneandwhereitisimportanttocapture

details,suchasfacialfeatures,theMBRshouldbesetto10Mbit/s(for1080presolutionat30fps).

TofurthersavebandwidthgotoSetup>Video&Audio>VideoStreamanddooneormoreofthefollowing:

•GototheImagetabandsetalowMaximumframeratevalue.

•GototheH.264tabandsetahighGOPlengthvalue.

•GototheZipstreamtabandselectExtremeH.264bitratereduction.

•GototheZipstreamtab.EnableDynamicGOPandsetahighMaxdynamicGOPlengthvalue.

•GototheZipstreamtabandenableDynamicFPS.

Axis P3915-R Mk II User Manual

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