AXISQ7401VideoEncoder
VideoandAudio
•Foreachvideoinput75Ohmvideoterminationcanbedisabledbysettingthe75OhmterminationswitchtoOFF.These
terminationsareenabledonfactorydefault.Incaseswheretheproductistobeconnectedinparallelwithotherequipment,
foroptimumvideoquality,itisrecommendedthatterminationbeenabledforonlythelastdeviceinthevideosignalchain.
Overlay
Overlaysareusedtoprovideextrainformation,forexampleforforensicvideoanalysisorduringproductinstallationand
conguration.Overlaysaresuperimposedoverthevideostream.
Anoverlaytextcandisplaythecurrentdateandtime,oratextstring.Whenusingatextstring,modierscanbeusedtodisplay
informationsuchasthecurrentbitrateorthecurrentframerate.Forinformationaboutavailablemodiers,seeFileNaming&
Date/TimeFormatsintheonlinehelp
.
Itisalsopossibletodisplaytextwhenanactionruleistriggered,seeUseOverlayTextinanActionRule.
Toenableoverlays:
1.GotoVideo&Audio>VideoStreamandselecttheImagetab.
2.Toincludeanoverlayimage,selectIncludeoverlayimageatthecoordinates.Theoverlayimagemustrstbeuploadedto
theAxisproduct,seeOverlayImage.
3.Toincludedateandtime,selectIncludedateandIncludetime.
4.Toincludeatextstring,selectIncludetextandenterthetextintheeld.Modierscanbeused,seeFileNaming&
Date/TimeFormatsintheonlinehelp
.
5.Denetextoverlaycharacteristicsintherelevantelds.
6.ClickSave.
Tomodifythedateandtimeformat,gotoSystemOptions>Date&Time.SeeDate&Timeonpage46.
OverlayImage
Anoverlayimageisastaticimagesuperimposedoverthevideostream.Theimage,forexampleacompanylogo,isusedtoprovide
extrainformationortomaskapartoftheimage.
Sinceitisstatic,thepositionandsizeofanoverlayimagewillremainthesameregardlessofresolutionandPan/Tilt/Zoom
movements.Useaprivacymasktosetupadynamicmaskwhichwillalwaysmaskthespeciedpartofmonitoredarea.
Formoreinformationaboutprivacymasks,seePrivacyMaskonpage23.
Touseanoverlayimage,theimagemustrstbeuploadedtotheAxisproduct.TheuploadedimageshouldbeaWindows24-bitBMP
imagewithmaximum250colors.Theimagewidthandheight,inpixels,mustbeexactlydivisibleby4andcannotbelargerthanthe
maximumimageresolution.Ifcombiningtextandimageoverlays,takeintoconsiderationthatthetextoverlayoccupies16or32
pixelsinheight(dependingontheresolution)andhasthesamewidthasthevideoimage.
ToautomaticallyscaletheimagetotheresolutionusedbytheAxisproduct,selecttheoptionScalewithresolutionfromthe
TransparencySettingspagewhichisdisplayedwhenuploadingintheimage.
Touploadanoverlayimage:
1.GotoVideo&Audio>OverlayImage.
2.ClickBrowseandbrowsetothele.
3.ClickUpload.
4.TheTransparencySettingspageisnowdisplayed:
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