Axis 01766-001 - Streaming and Storage

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AXISQ9216–SLVNetworkCamera

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Streamingandstorage

Videocompressionformats

Decidewhichcompressionmethodtousebasedonyourviewingrequirements,andonthepropertiesofyournetwork.The

availableoptionsare:

MotionJPEG

Note

ToensuresupportfortheOpusaudiocodec,theMotionJPEGstreamisalwayssentoverRTP.

MotionJPEG,orMJPEG,isadigitalvideosequencethatismadeupofaseriesofindividualJPEGimages.Theseimagesarethen

displayedandupdatedataratesufcienttocreateastreamthatshowsconstantlyupdatedmotion.Fortheviewertoperceivemotion

videotheratemustbeatleast16imageframespersecond.Fullmotionvideoisperceivedat30(NTSC)or25(PAL)framespersecond.

TheMotionJPEGstreamusesconsiderableamountsofbandwidth,butprovidesexcellentimagequalityandaccesstoeveryimage

containedinthestream.

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.

H.265orMPEG-HPart2/HEVC

Note

H.265islicensedtechnology.TheAxisproductincludesoneH.265viewingclientlicense.Toinstalladditionalunlicensed

copiesoftheclientisprohibited.Topurchaseadditionallicenses,contactyourAxisreseller.

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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