Axis XP40-Q1942 - Page 19

XP40-Q1942Explosion-ProtectedPTNetworkCamera
Aboutvideosettings
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.
6.ClickSave.
Howtoincludecurrentbitrateinatextoverlay
1.GotoVideo>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.Forinstanceinrailwaysurveillance
whereattimesthereisalotofmovementinthesceneandwhereitisimportanttocapturedetails,suchasfacialfeatures,theMBR
shouldbesetto10Mbit/s(for1080presolutionat30fps).
TofurthersavebandwidthgotoSetup>Video>VideoStreamanddooneormoreofthefollowing:
•GototheImagetabandsetalowMaximumframeratevalue.
•GototheH.264tabandsetahighGOPlengthvalue.
•GototheZipstreamtabandselectExtremeH.264bitratereduction.
19