Axis Q3527-LVE - Streaming & Performance Issues

AXISQ3527-LVENetworkCamera
Troubleshooting
Problemswithstreaming
MulticastH.264only
accessiblebylocalclients
Checkifyourroutersupportsmulticasting,orifyouneedtoconguretheroutersettingsbetween
theclientandthedevice.YoumightneedtoincreasetheTTL(TimeToLive)value.
NomulticastH.264
displayedintheclient
CheckwithyournetworkadministratorthatthemulticastaddressesusedbytheAxisdevice
arevalidforyournetwork.
Checkwithyournetworkadministratortoseeifthereisarewallthatpreventsviewing.
PoorrenderingofH.264
images
Ensurethatyourgraphicscardusesthelatestdriver.Youcanusuallydownloadthelatestdrivers
fromthemanufacturer’swebsite.
Colorsaturationisdifferent
inH.264andMotionJPEG
Modifythesettingsforyourgraphicsadapter.Gototheadapter’sdocumentationformore
information.
Lowerframeratethan
expected
•SeePerformanceconsiderationsonpage56.
•Reducethenumberofapplicationsrunningontheclientcomputer.
•Limitthenumberofsimultaneousviewers.
•Checkwiththenetworkadministratorthatthereisenoughbandwidthavailable.
•Lowertheimageresolution.
•Logintothedevice’swebinterfaceandsetacapturemodethatprioritizesframerate.
Ifyouchangethecapturemodetoprioritizeframerateitmightlowerthemaximum
resolution,dependingonthedeviceusedandcapturemodesavailable.
•Themaximumframespersecondisdependentontheutilityfrequency(60/50Hz)
oftheAxisdevice.
Can’tconnectoverport8883withMQTToverSSL
Therewallblockstrafc
usingport8883asit’s
deemedinsecure.
Insomecasestheserver/brokermightnotprovideaspecicportforMQTTcommunication.Itmay
stillbepossibletouseMQTToveraportnormallyusedforHTTP/HTTPStrafc.
•Iftheserver/brokersupportsWebSocket/WebSocketSecure(WS/WSS),typicallyon
port443,usethisprotocolinstead.Checkwiththeserver/brokerprovidertoseeif
WS/WSSissupportedandwhichportandbasepathtouse.
•Iftheserver/brokersupportsALPN,theuseofMQTTcanbenegotiatedoveranopen
port,suchas443.Checkwithyourserver/brokerprovidertoseeifALPNissupported
andwhichALPNprotocolandporttouse.
Performanceconsiderations
Whensettingupyoursystem,itisimportanttoconsiderhowvarioussettingsandsituationsaffecttheperformance.Somefactors
affecttheamountofbandwidth(thebitrate)required,otherscanaffecttheframerate,andsomeaffectboth.Iftheloadonthe
CPUreachesitsmaximum,thisalsoaffectstheframerate.
Thefollowingfactorsarethemostimportanttoconsider:
•Highimageresolutionorlowercompressionlevelsresultinimagescontainingmoredatawhichinturnaffectsthe
bandwidth.
•RotatingtheimageintheGUIcanincreasetheproduct'sCPUload.
•AccessbylargenumbersofMotionJPEGorunicastH.264clientsaffectsthebandwidth.
•Simultaneousviewingofdifferentstreams(resolution,compression)bydifferentclientsaffectsbothframerateand
bandwidth.
Useidenticalstreamswhereverpossibletomaintainahighframerate.Streamprolescanbeusedtoensurethat
streamsareidentical.
•AccessingMotionJPEGandH.264videostreamssimultaneouslyaffectsbothframerateandbandwidth.
•Heavyusageofeventsettingsaffectstheproduct’sCPUloadwhichinturnaffectstheframerate.
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