Canon XL1 3CCD Manual

A SERVICE OF

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‐CanbeeitherNTSCorPAL

CD‐ROMFORMATS

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‐Notsopopularanymorebecauseoftheweb

‐Higherbandwidththanwebvideo

‐CapableofDVDqualityonfastcomputers

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INTERNETFORMATS

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‐Lessbandwidthsoeverybitofdatahastocount

‐Webvideocanuseeitherreal‐timestreamingmodeorprogressive‐downloadmode

‐Real‐timerequiresspecialisedstreamingserversoftwareandarelimitedinqualitybythebandwidth

availablebetweentheserverandtheenduser.

‐Progressive‐downloadfilesloadfromstandardwebservers,andmaytakealongtimetodownload,

butmayalsoprovidehigherandmorereliablevideoandaudioquality.

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MOBILEDEVICES

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‐Thesedeviceshavesmallscreensandslowprocessors,evencomparedtoalaptopcomputer,butthe

abilitytoplayvideobackonextremelysmallandlightweightdevicescanhavegreatvalue.

‐Mostcompressedvideoformatscanbeplayedonsomemobiledevices,includingAdobe®Flash®

Video,MPEG‐4,Microsoft®WindowsMedia,andRealMedia.Dedicatedmobileformats,likeKinoma,

arealsoavailable.

‐Therearenouniversalformatsorsettingsformobiledevices.Instead,contenthastobeoptimized

forasmallclassofdevicesorevenaparticularmodel.Whentheoptimizationissuccessful,theresults

canbegreat.

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TheFundamentals 

HUMANSENSES

‐Limitationsinoursensesofsightandhearingmakecompressionpossible

‐Compressiontechnologiestakeadvantageofthestrengthsandweaknessesofhumansensesby

reducingdatathatisn’tlikelytobeperceived.