Axis M32-LVE Series - Page 34

AXISM32-LVENetworkCameraSeries
Thedeviceinterface
Resolution Resolution
Resolution
:Selecttheimageresolutionsuitableforthesurveillancescene.Ahigherresolutionincreasesbandwidth
andstorage.
Frame Frame
Frame
rate rate
rate
:Toavoidbandwidthproblemsonthenetworkorreducestoragesize,youcanlimittheframerateto
axedamount.Ifyouleavetheframerateatzero,theframerateiskeptatthehighestpossiblerateunderthe
currentconditions.Ahigherframeraterequiresmorebandwidthandstoragecapacity.
Compression Compression
Compression
:Usetheslidertoadjusttheimagecompression.Highcompressionresultsinalowerbitrateand
lowerimagequality.Lowcompressionimprovestheimagequality,butusesmorebandwidthandstoragewhen
yourecord.
Signed Signed
Signed
video video
video
:Turnontoaddthesignedvideofeaturetothevideo.Signedvideoprotectsthevideofrom
tamperingbyaddingcryptographicsignaturestothevideo.
H.26x H.26x
H.26x
encoding encoding
encoding
Zipstream Zipstream
Zipstream
:Abitratereductiontechnology,optimizedforvideosurveillance,thatreducestheaveragebitrateinan
H.264orH.265streaminrealtime.AxisZipstreamappliesahighbitrateinsceneswheretherearemultipleregions
ofinterest,forexampleinsceneswithmovingobjects.Whenthesceneismorestatic,Zipstreamappliesalower
bitrate,andtherebyreducestherequiredstorage.Tolearnmore,see
Reducing the bit rate with Axis Zipstream
Selectthedesiredlevelofbitratereduction:
•Off Off
Off
:Nobitratereduction.
•Low Low
Low
:Novisiblequalitydegradationinmostscenes.Thisisthedefaultoptionanditcanbeusedinall
typesofscenestoreducethebitrate.
•Medium Medium
Medium
:Visibleeffectsinsomescenesthroughlessnoiseandaslightlylowerlevelofdetailinregionsof
lowerinterest,forexamplewherethereʼsnomovement.
•High High
High
:Visibleeffectsinsomescenesthroughlessnoiseandalowerlevelofdetailinregionsoflower
interest,forexamplewherethereʼsnomovement.Werecommendthislevelforcloud-connected
devicesanddevicesthatuselocalstorage.
•Higher Higher
Higher
:Visibleeffectsinsomescenesthroughlessnoiseandalowerlevelofdetailinregionsoflower
interest,forexamplewherethereʼsnomovement.
•Extreme Extreme
Extreme
:Visibleeffectsinmostscenes.Thebitrateisoptimizedforsmallestpossiblestorage.
Dynamic Dynamic
Dynamic
FPS FPS
FPS
(framespersecond):Turnontoallowthebandwidthtovarybasedonthelevelofactivityinthe
scene.Moreactivityrequiresmorebandwidth.
Lower Lower
Lower
limit limit
limit
:Enteravaluetoadjusttheframeratebetweenminimalfpsandthestreamdefaultfpsbasedon
scenemotion.Werecommendyoutouselowerlimitinsceneswithverylittlemotion,wherethefpscoulddropto
1orlower.
Dynamic Dynamic
Dynamic
GOP GOP
GOP
(GroupofPictures):TurnontodynamicallyadjusttheintervalbetweenI-framesbasedonthelevel
ofactivityinthescene.
Upper Upper
Upper
limit limit
limit
:EnteramaximumGOPlength,thatis,themaximumnumberofP-framesbetweentwoI-frames.
P P
P
- -
-
frames frames
frames
:EnterthedesirednumberofP-frames.Thehigherthenumber,thelessbandwidthisrequired.However,
iftherearenetworkcongestion,therecouldbeanoticeabledeteriorationinthevideoquality.
H.264 H.264
H.264
prole prole
prole
:
•Baseline Baseline
Baseline
:UseifthevideomanagementclientdoesnʼtsupportCABACentropycoding.
•Main Main
Main
:UseifthevideomanagementclientsupportsCABACentropycoding,toachievehigher
compressionwithmaintainedvideoquality.Itrequiresmoreprocessingpowertodecodecompared
tothebaselineprole.
•High High
High
:UseifthevideomanagementclientsupportsCABACentropycoding,toachieveevenhigher
compressionthanwiththemainprole.Itrequiresmoreprocessingpowertodecodecomparedto
themainprole.
Bitrate Bitrate
Bitrate
control control
control
:
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