Axis Q1775 - Zipstream Technology

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AXISQ1775NetworkCamera

VideoandAudio

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).

TofurthersavebandwidthgotoSetup>Video&Audio>VideoStreamanddooneormoreofthefollowing:

•GototheImagetabandsetalowMaximumframeratevalue.

•GototheH.264tabandsetahighGOPlengthvalue.

•GototheZipstreamtabandselectExtremeH.264bitratereduction.

•GototheZipstreamtab.EnableDynamicGOPandsetahighMaxdynamicGOPlengthvalue.

•GototheZipstreamtabandenableDynamicFPS.

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