Axis Communications P5512 Manuel d'utilisateur Page 17
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AXISP5512-EPTZDomeNetworkCamera
Video
Image
ThedefaultimagesettingscanbeconguredunderVideo>VideoStream.SelecttheImagetab.
Thefollowingsettingsareavailable:
•Resolution.Selectthedefaultresolution.
•SelectAspectratiocorrectiontoimprovetheappearanceofimagesinthebrowserwhenthevideostreamhasadifferent
aspectratio.Pixelscomprisingtheimagearerearrangedsoastoprovideamoreaccuraterepresentationoftheimage.
•Compression.Thecompressionlevelaffectstheimagequality,bandwidthandlesizeofsavedimages;thelowerthe
compression,thehighertheimagequalitywithhigherbandwidthrequirementsandlargerlesizes.
•Rotateimage.Ifrequired,theimagecanberotated.
•Maximumframerate.Toavoidbandwidthproblems,theframerateallowedtoeachviewercanbeLimitedtoaxed
amount.Alternatively,theframeratecanbesetasUnlimited,whichmeanstheAxisproductalwaysdeliversthehighest
frameratepossibleunderthecurrentconditions.
•Overlaysettings.SeeOverlay,onpage19.
ClickSavetoapplythenewsettings.
H.264
H.264,alsoknownasMPEG-4Part10/AVC,isavideocompressionstandardthatprovideshighqualityvideostreamsatlowbitrates.
AnH.264videostreamconsistsofdifferenttypesofframessuchasI-framesandP-frames.AnI-frameisacompleteimagewhereas
P-framesonlycontainthedifferencesfrompreviousframes.
TheGOVlengthisthenumberofframesbetweentwoconsecutiveI-frames.IncreasingtheGOVlengthmaysaveconsiderablyon
bandwidthrequirementsinsomecases,butmayalsohaveanadverseaffectonimagequality.
ThebitratecanbesetasVariableBitRate(VBR)orConstantBitRate(CBR).VBRadjuststhebitrateaccordingtotheimage
complexity,usingupmorebandwidthforincreasedactivityintheimage,andlessforlowerimageactivity.CBRallowsyoutoseta
xedTargetbitratethatconsumesapredictableamountofbandwidth.Asthebitratewouldusuallyneedtoincreaseforincreased
imageactivity,butinthiscasecannot,framerateandimagequalityareaffectednegatively.Topartlycompensateforthis,itis
possibletoprioritizeeitherframerateorimagequality.Notsettingaprioritymeansthatframerateandimagequalityareequally
affected.Youmustsaveyoursettingsbeforetheycantakeeffect.
Thecurrentbitratecanbesettoappearastextoverlay.Todothis,selecttheIncludetextcheckboxoptionunderOverlay
Settingsandenterthemodier#bintheeld.
MJPEG
Sometimestheimagesizeislargeduetolowlightorcomplexscenery.Adjustingthemaximumframesizehelpstocontrolthe
bandwidthandstorageusedbytheMotionJPEGvideostreaminthesesituations.SettingtheframesizetotheDefaultsetting
providesconsistentlygoodimagequalityattheexpenseofincreasedbandwidthandstorageusageinlowlight.Limitingtheframe
sizeoptimizesbandwidthandstorageusage,butmaygivepoorimagequality.Topreventincreasedbandwidthandstorageusage,
themaximumframesizeshouldbesettoanoptimalvalue.
StreamProles
Astreamproleisasetofpredenedstreamsettingsincludingresolution,compression,framerateandoverlaysettings.Stream
prolescanbeused:
•Whensettinguprecordingusingactionrules.SeeEvents,onpage30.
•Whensettingupcontinuousrecording.SeeContinuousRecording,onpage34.
•IntheLiveViewpage–selectthestreamprolefromtheStreamproledrop-downlist.
17
- USERMANUAL 1
- TableofContents 4
- HardwareOverview 5
- ConnectorsandButtons 6
- LEDIndicators 6
- AccessfromaBrowser 7
- AccessfromtheInternet 8
- SettheRootPassword 8
- TheLiveViewPage 9
- AccessingtheProduct 10
- MediaStreams 12
- HowtoStreamH.264 12
- AXISMediaControl(AMC) 12
- SettingUptheProduct 15
- BasicSetup 15
- VideoStream 16
- StreamProles 17
- CameraSettings 18
- ImageSettings 19
- OverlayImage 19
- LiveViewCong 21
- PTZ(PanTiltZoom) 23
- PresetPositions 23
- Gatekeeper 24
- GuardTour 24
- OSDIZones 24
- Advanced 25
- ControlQueue 25
- Detectors 26
- MotionDetection 26
- Applications 28
- ApplicationLicenses 28
- InstallApplication 28
- ApplicationConsiderations 28
- SettingUpanActionRule 31
- Recipients 32
- Schedules 33
- Recurrences 33
- Recordings 34
- RecordingList 34
- ContinuousRecording 34
- Languages 35
- SystemOptions 36
- Security 36
- Date&Time 38
- Maintenance 44
- ResettoFactoryDefaultSettings 46
- Troubleshooting 47
- CheckingtheFirmware 47
- UpgradingtheFirmware 47
- EmergencyRecoveryProcedure 48
- TechnicalSpecications 51
- Connectors 53
- PerformanceConsiderations 53
- UserManualVer.M4.3 54
- ©AxisCommunicationsAB,2013 54
- PartNo.54225 54
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