Canon XL1 3CCD Manual

A SERVICE OF

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‐TheSDIformat,technicallyknownasCCIR‐601or601,issuperiorinqualitytocomponentanalog

videoandisthestandardinprofessionalandbroadcasttelevision.

‐Becauseitisdigitalanduncompressed,itcanbeeditedandcopiedmanytimeswithnodetectable

lossofquality.

‐Originallymeantforstandarddefinition,butahigh‐definitionversion,HD‐SDI,isgrowingin

popularityasHDbecomesmorecommon.

‐SDIistypicallyonlysupportedinhigh‐endgearandcanbeexpensive,especiallyforSDIvideo

monitors.

‐Thevideo,andsometimestheaudio,iscarriedinasingleBNCcable.

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•Digitalaudio:

‐Therearemanydifferentdigitalaudioformats.

‐Consumer‐gradedigitalaudioiscarriedonelectronic(suchasS/PDIF)oroptical(suchassquare

TOSlinkorroundMiniplug)connectioncables.

‐Digitalvideocarriesanembeddeddigitalaudiosignalwiththedigitalvideosignal.‐Themost

commonprofessional‐gradedigitalaudioformatisAudioEngineering

Society/EuropeanBroadcastingUnion(AES/EBU).AstereochannelofAES/EBUcanbetransmitted

oversingleBNCorsingleXLRconnectioncables.

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Choosingtherightcapturecodec

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

Whenyoucapturecontent,youmustchooseanappropriatecodec.Thechoicedependsonthecapture

hardwareyou’reusing,theformatfromwhichyou’recapturing,andyourstoragerequirements.

Therearethreebasictypesofcodecstochoosefrom:DV,MotionJPEG,and

uncompressed.

1.DVcodecs:

‐IdealwhencapturingfromaDV25deck.OveraFireWireconnector=perfectcopy.‐Thedatarateof

DV25isn’tquiteenoughforoptimalencodingfromsourcewithanalognoise

‐The4:1:1colorspacealsoentailsalossinquality.

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2.MotionJPeGcodecs

‐Havebeentheleadingformatforhigh‐endvideo‐editingsystemsforsometime.