Axis FA51 User Manual

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AXISFA51MainUnit

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Privacymasks

Aprivacymaskisauser-denedareathatcoversapartofthemonitoredarea.Inthevideostream,privacymasksappeareitheras

blocksofsolidcolororwithamosaicpattern.

You’llseetheprivacymaskonallsnapshots,recordedvideo,andlivestreams.

YoucanusetheVAPIX®applicationprogramminginterface(API)toturnofftheprivacymasks.

Important

Ifyouusemultipleprivacymasksitmayaffecttheproduct’sperformance.

Overlays

Overlaysaresuperimposedoverthevideostream.Theyareusedtoprovideextrainformationduringrecordings,suchasatimestamp,

orduringproductinstallationandconguration.Youcanaddeithertextoranimage.

Streamingandstorage

Videocompressionformats

Decidewhichcompressionmethodtousebasedonyourviewingrequirements,andonthepropertiesofyournetwork.The

availableoptionsare:

H.264orMPEG-4Part10/AVC

Note

H.264isalicensedtechnology.TheAxisproductincludesoneH.264viewingclientlicense.Toinstalladditionalunlicensed

copiesoftheclientisprohibited.Topurchaseadditionallicenses,contactyourAxisreseller.

H.264can,withoutcompromisingimagequality,reducethesizeofadigitalvideolebymorethan80%comparedtotheMotion

JPEGformatandbyasmuchas50%comparedtotheMPEG-4standard.Thismeansthatlessnetworkbandwidthandstoragespace

arerequiredforavideole.Orseenanotherway,highervideoqualitycanbeachievedforagivenbitrate.

HowdoImage,Stream,andStreamprolesettingsrelatetoeachother?

TheImagetabcontainscamerasettingsthataffectallvideostreamsfromtheproduct.Ifyouchangesomethinginthistab,it

immediatelyaffectsallvideostreamsandrecordings.

TheStreamtabcontainssettingsforvideostreams.Yougetthesesettingsifyourequestavideostreamfromtheproductanddon’t

specifyforexampleresolution,orframerate.WhenyouchangethesettingsintheStreamtab,itdoesn’taffectongoingstreams,but

itwilltakeeffectwhenyoustartanewstream.

TheStreamprolessettingsoverridethesettingsfromtheStreamtab.Ifyourequestastreamwithaspecicstreamprole,the

streamcontainsthesettingsofthatprole.Ifyourequestastreamwithoutspecifyingastreamprole,orrequestastreamprole

thatdoesn'texistintheproduct,thestreamcontainsthesettingsfromtheStreamtab.

Bitratecontrol

Withbitratecontrol,youcanmanagethebandwidthconsumptionofyourvideostream.

Variablebitrate(VBR)

Withvariablebitrate,thebandwidthconsumptionvariesbasedonthelevelofactivityinthescene.Themoreactivityinthescene,

themorebandwidthyouneed.Youareguaranteedconstantimagequalitybutitrequiresstoragemargins.

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Axis FA51 Single Channel Main Unit with HDMI Output