Axis Q1645 - Video compression formats

AXISQ16NetworkCameraSeries
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Remotefocusandzoom
Theremotefocusandzoomfunctionalityallowsyoutomakefocusandzoomadjustmentstoyourcamerafromacomputer.Itisa
convenientwaytoensurethatthescene’sfocus,viewingangleandresolutionareoptimizedwithouthavingtovisitthecamera’s
installationlocation.
Privacymasks
Aprivacymaskisauser-denedareathatpreventsusersfromviewingapartofthemonitoredarea.Inthevideostream,privacy
masksappearasblocksofsolidcolor.
You’llseetheprivacymaskonallsnapshots,recordedvideo,andlivestreams.
YoucanusetheVAPIX®applicationprogramminginterface(API)tohidetheprivacymasks.
Important
Ifyouusemultipleprivacymasksitmayaffecttheproduct’sperformance.
Youcancreateseveralprivacymasks.Themaximumnumberofmasksdependsonthecomplexityofallthemaskscombined.The
moreanchorpointsineachmask,thefewermasksyoucancreate.Eachmaskcanhave3to10anchorpoints.
Important
Setthezoomandfocusbeforeyoucreateaprivacymask.
Overlays
Overlaysaresuperimposedoverthevideostream.Theyareusedtoprovideextrainformationduringrecordings,suchasatimestamp,
orduringproductinstallationandconguration.Youcanaddeithertextoranimage.
Streamingandstorage
Videocompressionformats
Decidewhichcompressionmethodtousebasedonyourviewingrequirements,andonthepropertiesofyournetwork.The
availableoptionsare:
MotionJPEG
MotionJPEG,orMJPEG,isadigitalvideosequencethatismadeupofaseriesofindividualJPEGimages.Theseimagesarethen
displayedandupdatedataratesufcienttocreateastreamthatshowsconstantlyupdatedmotion.Fortheviewertoperceivemotion
videotheratemustbeatleast16imageframespersecond.Fullmotionvideoisperceivedat30(NTSC)or25(PAL)framespersecond.
TheMotionJPEGstreamusesconsiderableamountsofbandwidth,butprovidesexcellentimagequalityandaccesstoeveryimage
containedinthestream.
H.264orMPEG-4Part10/AVC
Note
H.264isalicensedtechnology.TheAxisproductincludesoneH.264viewingclientlicense.Toinstalladditionalunlicensed
copiesoftheclientisprohibited.Topurchaseadditionallicenses,contactyourAxisreseller.
H.264can,withoutcompromisingimagequality,reducethesizeofadigitalvideolebymorethan80%comparedtotheMotion
JPEGformatandbyasmuchas50%comparedtoolderMPEGformats.Thismeansthatlessnetworkbandwidthandstoragespace
arerequiredforavideole.Orseenanotherway,highervideoqualitycanbeachievedforagivenbitrate.
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