Axis Q3517-SLVE - Performance Considerations

AXISQ3517-SLVENetworkCamera
Troubleshooting
Problemswithstreaming
MulticastH.264only
accessiblebylocalclients
Checkifyourroutersupportsmulticasting,oriftheroutersettingsbetweentheclientandthe
productneedtobecongured.TheTTL(TimeToLive)valuemayneedtobeincreased.
NomulticastH.264
displayedintheclient
CheckwithyournetworkadministratorthatthemulticastaddressesusedbytheAxisproduct
arevalidforyournetwork.
Checkwithyournetworkadministratortoseeifthereisarewallpreventingviewing.
PoorrenderingofH.264
images
Ensurethatyourgraphicscardisusingthelatestdriver.Thelatestdriverscanusuallybe
downloadedfromthemanufacturer’swebsite.
Colorsaturationisdifferent
inH.264andMotionJPEG
Modifythesettingsforyourgraphicsadapter.Gototheadapter’sdocumentationformore
information.
Lowerframeratethan
expected
•SeePerformanceconsiderationsonpage22.
•Reducethenumberofapplicationsrunningontheclientcomputer.
•Limitthenumberofsimultaneousviewers.
•Checkwiththenetworkadministratorthatthereisenoughbandwidthavailable.
•Lowertheimageresolution.
•Logintotheproduct’swebpageandsetacapturemodethatprioritizesframerate.
Changingthecapturemodetoprioritizeframeratemightlowerthemaximum
resolutiondependingontheproductusedandcapturemodesavailable.
•Themaximumframespersecondisdependentontheutilityfrequency(60/50Hz)of
theAxisproduct.
Performanceconsiderations
Whensettingupyoursystem,itisimportanttoconsiderhowvarioussettingsandsituationsaffecttheperformance.Somefactors
affecttheamountofbandwidth(thebitrate)required,otherscanaffecttheframerate,andsomeaffectboth.Iftheloadonthe
CPUreachesitsmaximum,thisalsoaffectstheframerate.
Thefollowingfactorsarethemostimportanttoconsider:
•Highimageresolutionorlowercompressionlevelsresultinimagescontainingmoredatawhichinturnaffectsthe
bandwidth.
•RotatingthelensmanuallywillresultinbetterperformancecomparedtorotatingtheimagefromtheGUI.
•AccessbylargenumbersofMotionJPEGorunicastH.264clientsaffectsthebandwidth.
•Simultaneousviewingofdifferentstreams(resolution,compression)bydifferentclientsaffectsbothframerateand
bandwidth.
Useidenticalstreamswhereverpossibletomaintainahighframerate.Streamprolescanbeusedtoensurethat
streamsareidentical.
•AccessingMotionJPEGandH.264videostreamssimultaneouslyaffectsbothframerateandbandwidth.
•Heavyusageofeventsettingsaffectstheproduct’sCPUloadwhichinturnaffectstheframerate.
•UsingHTTPSmayreduceframerate,inparticularifstreamingMotionJPEG.
•Heavynetworkutilizationduetopoorinfrastructureaffectsthebandwidth.
•Viewingonpoorlyperformingclientcomputerslowersperceivedperformanceandaffectsframerate.
•RunningmultipleAXISCameraApplicationPlatform(ACAP)applicationssimultaneouslymayaffecttheframerateand
thegeneralperformance.
22