Multimedia material

Type

Tomakeapicture,youneedacertaindegreeofcompositionandcolorskills.Themakingofanimationalsorequiresafoundationinart,andtheproductionofvideoandaudiorequiresprofessionalknowledgeandskills.

Typesofmultimediamaterials

Generallyspeaking,accordingtothedifferentfileformatsofthematerialsstoredonthedisk,thematerialscanbedividedintotext,sound,image,animation,video,etc.type.

Multimediamateriallibrarycanmanagestreamingmedia,FLASHanimation,documents,picturesandothermultimediaformatfiles,amongwhichstreamingmediaincludesavi,wav,mpeg,rmandothersounds,Imagefiles,teacherscansubmitvariousmultimediamaterialstotheserverthroughIE,andfillinthetypes,attributesandbriefdescriptionsofthematerialssubmitted.Thesecontentswillplayanimportantroleinfuturematerialsearches.Afterthematerialsaresubmitted,theywillbereviewedbytheadministrator,andthematerialsthathavepassedthereviewwillbepublishedtothemultimediamateriallibraryforeveryonetoretrieveanddownload.Theusercansearchforthematerial'skeywords,nameandmaterialprofileinfulltexttosearchfortherequiredmaterial.

Text

Textreferstoletters,numbers,andsymbols.Comparedwithothermedia,textistheeasiesttohandle,takesuptheleaststoragespace,andisthemostconvenientforcomputerinputandstorage.media.Textdisplayisaveryimportantpartofmultimediateachingsoftware.Inmultimediateachingsoftware,theconcepts,definitions,principles,problemexpressions,titles,menus,buttons,navigation,etc.areallinseparablefromtextinformation.Itisanimportantmediaelementfordisseminatingteachinginformationaccuratelyandeffectively.Textisacommonlyusedmediaelement.

Fileformatandfeatures:

.TXT:TXTtextisaplaintextfileandisunformatted,thatis,thereisnorelevantfont,size,Formattinginformationsuchascolorandlocation.The"Notepad"oftheWindowssystemisaneditingandstoragetoolthatsupportsTXTtext.AlltexteditingsoftwareandmultimediaintegrationtoolsoftwarecandirectlycallTXTtextformatfiles.Notepadisalsoverypowerful,

.DOC:DOCisafileformatusedbyWordwordprocessingsoftware.

.WPS:WPSistheformatofChinesewordprocessingsoftware,whichcontainsuniquelinebreakandtypesettinginformation.TheyarecalledformattedtextandcanonlybeeditedincertainWPSeditingsoftware.Usedin.

.RTF:Describethecontentinplaintext,whichcansavevariousformatsofinformation,andcanbecreatedinwriting,Word,etc.AlsoknownasRichTextFormat(RichTextFormat,generallyreferredtoasRTF)isacross-platformdocumentformatdevelopedbyMicrosoftCorporation.MostwordprocessingsoftwarecanreadandsaveRTFdocuments.

Graphics

Thegraphicsinthecomputeraredigitalandvectorgraphics.Vectorgraphicsaredescribedbyasetofinstructions.Theseinstructionsdescribeallthestraightlines,Theposition,dimension,sizeandshapeofcircles,arcs,rectangles,curves,etc.Whendisplaying,specialsoftwareisrequiredtoreadtheseinstructionsandconvertthemintotheshapeandcolordisplayedonthescreen.ThevectordiagramisgeneratedusingacomputerdrawingprogramcalledDraw.Vectorgraphicsaremainlyusedforlineardrawings,artisticcharacters,engineeringdrawings,etc.

Fileformatandfeatures:

.WMFWindowsmetafileformat.

.JPGCommonlyusedimagefileformat.

TheformatofpicturesisoftenusedinPNGflash.

.TheformatoftenusedinGIFwebpages.

.EMFWindowsenhancedmetafileformat.

.TIFisacommonlyusedmetafileformatintheprintingindustry.

.PSDphotoshopeditsthemetafile.

.CDRCorelDRAWproducedandgenerated.CDRfiles.

.EPSfileformatproducedby.EPSillustrator.

Image

Theimagementionedherereferstoabitmap,whichiscomposedofasetofdigitsthatdescribetheintensityandcolorofeachpixelintheimage.Bitmapimagesaresuitableforimagesthataremoredetailed,richinlevelsandcolors,andcontainalotofdetails.Therearemanywaystogenerateabitmapimage.Themostcommonlyusedistodrawwithasoftwaretoolfordrawing,anddraweachpixelwithaspecifiedcolortogenerateagraphic.

Fileformatandfeatures:

.BMPBMP(abbreviationofBitmap)imagefileisaformatsupportedbyalmostallgraphicssoftwareunderWindowsenvironment.Thiskindofimagefilestoreseachpixelinthedigitalimagecorrespondingly.Generally,nocompressionmethodisused.Therefore,imagefilesinBMPformatarerelativelylarge,especiallytruecolorswith24-bitcolordepth(2tothe24thpower).Theimageisevenmoreso.Duetothenon-compressioncharacteristicsofBMPimagefiles,intheproductionofmultimediaprograms,BMPformatimagefilesareusuallynotuseddirectly,butusedintheintermediateprocessofimageeditingandprocessingtosavethemostrealimageeffects,andconvertthemtootherimagesafterediting.Fileformat,andthenappliedtotheproductionofmultimediaprojects.

.GIFPNG(PortableNetworkGraphics)imagefileformatprovidestransparencyandinterlacingeffectssimilartoGIFfiles.Itsupportstheuseof24-bitcolors,andthecolorindexfunctionofthepalettecanalsobeused.ItcanbesaidthatthePNGformatimagecombinestheadvantagesofthemostcommonlyusedimagefileformats(suchasGIF,JPEG),anditusesalosslesscompressionalgorithmtoretaineverypixelintheoriginalimage.

.JPGJPEGimagefileformatusesamoreadvancedcompressionalgorithm.Thisalgorithmcanmaintainbetterimagefidelityandhighercompressionratiowhencompressingdigitalimages.Thebiggestfeatureofthisformatisthatthefileisverysmall.UserscanchoosethecompressionratioofJPEGfilesaccordingtotheirneeds.Whenthecompressionratiois16:1,thecompressedimageeffectisalmostindistinguishablefromtheoriginalimage;whenthecompressionratioreaches48:At1o'clock,agoodimageeffectcanstillbemaintained,andalessobviousdistortioncanbeseenbycarefullyobservingtheedgeoftheimage.BecauseJPEGimageshaveahighcompressionratio,theyareverysuitableforsituationswherealargenumberofimagesaretobeprocessed.

Animationisatechnologythatgeneratesmotionpicturesthroughaseriesofindividualpicturesthataredifferentfromeachother.Throughacertainspeedofplayback,theeffectofcontinuouschangesintheimageinthepicturecanbeachieved.Torealizeanimation,itfirstneedsaseriesofgraphicsorimageswithslightdifferencesbeforeandafter.Eachpictureiscalledaframeofanimation,whichcanbegeneratedandrecordedbyacomputer.Aslongastheseframesareprojectedatacertainspeed,ananimationcanbeobtained,whichiscalledaframe-by-frameanimation.

Inteaching,itisoftennecessarytouseanimationtosimulatethechangingprocessofthingstoillustratescientificprinciples,especiallytwo-dimensionalanimation,whichisoftenusedinteaching.Inmanyfields,theuseofcomputeranimationtoexpressthingsisevenbetterthanmovies.Therefore,morecompletemultimediateachingsoftwareshouldbeequippedwithanimationtoenhancetheteachingeffect.

Fileformatandcharacteristics

.FLAFlashSourcefilestorageformat.InFlash,alargenumberofgraphicsarevectorgraphics.Therefore,thereisnodistortionintheoperationofzoominginandout,andthevolumeofanimationfilesitproducesissmall.Flash5animationeditingsoftwareispowerful,easytooperate,easytolearnandeasytouse.

.SWFFlashAnimationfileformat.

.GIFGIFformatisacommontwo-dimensionalanimationformat.

.AVIStrictlyspeaking,theAVIformatisnotananimationformat,butavideoformat.Itcontainsnotonlypictureinformation,butalsosoundeffects.Becauseitcontainssoundsynchronizationissues,thisformatismostlybasedontimeastheplaybackunit,sotheplaybackspeedcannotbecontrolledduringplayback.

Sound

Soundusuallyhasthreeforms:voice,soundeffectsandmusic.Voicereferstothesoundofpeopletalking;soundeffectsrefertospecialsoundeffects,suchasrain,ringtones,machinesounds,animalsounds,etc.Itcanberecordedfromnatureorartificiallysimulatedbyspecialmethods;musicisakindofThemostcommonformofsound.

Inmultimediateachingsoftware,languageexplanationandbackgroundmusicareimportantpartsofmultimediateachingsoftware.Themostcommonthreetypesofsoundsarewaveformsounds,MIDIandCDmusic,andwaveformsoundsarethemostcommonlyusedinmultimediateachingsoftware.

Fileformatandcharacteristics

.WAVwavesoundfileformat,wavesound,itisgeneratedbysamplingthesound.Thousandsofindependentdigitalgroupsformedafteranalog-to-digitalconversionarestoredinthesoftware.Thedigitaldatarepresentstheinstantaneousamplitudeofthesoundatdiscretepointsintime.

.MIDMIDIsoundfileformat,MIDI(MusicalInstrumentDigitalInterface)isacommunicationstandardbetweenelectronicmusicequipmentandcomputers.MIDIdataisnotsound,butinstructionsstoredinnumericalform.AMIDIfileisaseriesofcommandstringswithtimecharacteristics.Inessence,itisarecordingofmusicalbehaviors.WhentherecordedMIDIfileistransferredtotheMIDIplaybackdevice,thesoundisformed.MIDIdataisdevicedependent,andthesoundproducedbyMIDImusicfilesdependsontheMIDIdeviceusedforplayback.

.MP3MP3isanaudiofileformatcompressedandencodedbytheMPEGLayer3standard.MPEGencodinghasaveryhighcompressionrate.Wecanknowbycalculationthataone-minuteCDsoundquality(44100Hz,16Bit,2Stereo,60Second)WAVfileneedsabout10megabytesifuncompressedStoragespace.ThecompressionratioofMPEGLayer3isashighas1:12.Inthepast,about1minuteofCDmusicwascompressedandencodedintheMLPEGLayer3format,itcouldbecompressedtoacapacityofabout1megabyte,anditstimbreandsoundqualitycouldremainbasicallycompletewithoutdistortion.

Video

Video(Video),likeanimation,consistsofcontinuouspictures,exceptthatthepicturesaredynamicimagesofnaturalscenery.Videoisgenerallydividedintoanalogvideoanddigitalvideo.TVandvideotapeareanalogvideoinformation.Whentheimageisplayedataspeedofmorethan24framespersecond,duetothepersistenceofthehumaneye,whatweseeisacontinuousvideo.Thevideointhemultimediamaterialreferstothedigitizedmovingimage.VCDdiscsstoredigitalvideoinformationgeneratedbyquantizedsamplingandcompression.Thevideosignalacquisitioncardisadevicethatcompressesanalogvideosignalsintodigitalvideoduringtheconversionprocessandstorestheminthecomputerharddiskintheformoffiles.Afterconnectingthevideoandaudioinputterminalofthevideocapturecardwiththevideoandaudiosignaloutputterminal(suchasacamera,avideorecorder,aDVDplayer,etc.),thecapturedvideoimageandaudioinformationcanbecollected.

Avideofileisamultimediafilecomposedofasetofcontinuouslyplayeddigitalimages(Video)andasectionofdigitalaccompanyingaudioplayedsimultaneouslywiththecontinuousimages.Eachoftheimagesiscalledaframe,andthedigitalaudiothatisplayedsimultaneouslywiththevideoisreferredtoas"accompanyingaudio"forshort.

Fileformatandfeatures

.AVIAVI(AudioVideoInterleave)isavideofileformatdevelopedbyMicrosoftforcrossrecordingofaudioandvideo.InAVIfiles,audioandvideodataareinterleavedandstored,andcontinuousinformationcanbeobtainedduringplayback.Thiskindofvideofileformatisflexibleandhasnothingtodowithhardware.ItcanbeusedinPCandMicrosoftWindowsenvironment.

.VOBDVDvideofilestorageformat.

.DATVCDvideofilestorageformat.

.wmvMpegencodedvideofiles.

.MPEGisthesameasabove.

.RMreal-timesound(realaudio)andreal-timevideo(realvideo)aremultimediatechnologiesdevelopedincomputernetworkapplications.ItcanProvideuserswithreal-timesoundandvideoeffects.Realusesthereal-timestreaming(streaming)technology,whichdividesthefileintomanysmallpiecestodownloadlikeapipelineinafactory.Usersenjoymusicorvideosonwebpagesusingthistechnology,andcanuseRealPlayertolistenorwatchwhiledownloadingthem,insteadofwaitingfortheentirefiletobedownloadedbeforelisteningorwatching.Realformatmultimediafilesarealsocalledrealmedia(RealMedia)orstreamingformatfiles,andtheirextensionis.RM,.RAor.RAM.Intheproductionofmultimediawebpages,ithasbecomeanimportantmultimediafileformat.Ifyouwanttouse"streaming"technologylikeRealformatfilesinwebpages,notonlythesupportofthebrowserisrequired,butalsoawebserverthatsupportsstreaming.

.MOVMOVisafileformatintroducedbyAppletoapplyvideoonMacintoshcomputers.Atthesametime,ApplealsolaunchedtheQuickTimesoftwaredesignedforMOVvideofileformatapplications.ThissoftwarehastwoversionsusedonMacintoshandPC.Therefore,MOVvideofileformatcanalsobeusedonmultimediaPCs.TheQuickTimesoftwareandMOVvideofileformathavebeenverymatureandhaveawiderangeofapplications.

Collectionandproduction

Basicoverviewofcollection

Thecollectionandproductionofmultimediamaterialsinvolvesmanyequipment,interfaces,mediaandfileformats,whichtakesalongtime.Itisaveryheavyandmeticulouswork.Forsomesimplematerials,suchasrelativelysimplegeometricfigures,youcangenerallyusethegraphicstoolsthatcomewiththemultimediacoursewaretodraw(forexample,youcandrawsimplegraphicsandcommongraphicsbyusingthegraphicstoolsinPowerpointandthebasicgraphicsintheself-selectedgraphicslibrary);therearemanyThematerialscanbefoundinotherplaces(suchasfinishedcourseware,materialCD-ROM,VCD,online,etc.)andcanbeused.Forteachers,thisisanidealshortcut,whichnotonlysavestheirtime,butalsoshortensCoursewareproductioncycle,andyoudon’tneedtoinvestinexpensiveequipment;somematerialsyouneedmustbeproducedbyyourself,whichrequiresmasteringtheuseofsomecommonlyusedtoolsandsoftwareandtheoperationofmultimediaequipment.

Principlesofcollection

1.PrinciplesofauthenticityandscientificityWhenusingmultimediamaterials,payattentiontotheauthenticityandscientificityofthecontent.Theselectionofmaterialshasverystrictrequirementsforauthenticity.Scienceitselfistruth-seekingandaccurate.Itopposesfalsification.Ifitlosesitsauthenticity,itlosesitsscientificity.Multimediateachingsoftwaremustaccuratelyexpresstheknowledgeofthesubject.Therefore,theselectionofmaterialsmustbestrictlycheckedtoensurethecorrectnessofthesubjectcontent.Itmustnotviolatescientificprinciples.Itmustbeaccurateinexplanation,rigorousinexpression,reliableindata,informative,andstandardizedinoperationandperformance.Theselectionofmaterialsmustconformtoobjectiverealityandcanwithstandpracticaltests.Online"grass"materialscannotbeselected.

Second,theprincipleofsystemicitySystemicityisthemainfeatureofareasonableknowledgestructuresystem.Thesystematicprinciplerequiresthattheselectionofmaterialshelpstoformknowledge,skillsandskillssystematically,continuously,andinacertainlogicalsequence.Thesystemicityofteachingcontentismainlyreflectedintheintegrityofsubjectcontentandtheintegrityofknowledge,ratherthanfragmentaryandincompleteknowledge.Secondly,systemicityisalsoreflectedintakingteachingasawholesystem,usingelementanalysismethodstodecomposeitintoindividualelements,furtherdecomposingeachelementintosub-elements,andcombiningtheminanorderlymannertomakeeachknowledgepointorderlyOrderlyandcloselyrelated.

Commonlyusedsoftware

Theformatisrelatedtothecompressionalgorithmused,andthesoftwareopenedandproducedisalsorelatedtothecompressionalgorithm.Herearesometypicalsoftwareformakingmultimediamaterials.

Textsoftware

WindowsNotepad,Word,WPS,Excel,COOL3D,etc.

Imagesoftware

Windowsdrawing,ACDSee,CoreDraw,Photoshop,Fireworks,conew,CDR,etc.

Soundsoftware

Windowsrecorder,CoolEdit,Winamp,herosupersolution,etc.

Animationsoftware

GifAnimator,Flash,Director,3DMAX,etc.

Videosoftware

WindowsMediaPlayer,SuperJieba,Premiere,VideoStudio,etc.

Historyofdevelopment

TheemergenceofmultimediatechnologymustbeamatteroftheX86era.Ifyoureallywanttoconfirmthetimeforthefulldevelopmentofmultimediatechnologyfromthehardware,itshouldbeexactlyAfterthefirstsoundcardappearedonthePC.Thegraphicscardhadalreadyappearedbeforetherewasnosoundcard,atleastthedisplaychiphadalreadyappeared.Theappearanceofthedisplaychipnaturallyindicatesthatcomputershavebeguntoprocessimages,butthisdoesnotmeanthatcomputersatthattimecandevelopmultimediatechnology.Theappearanceofsoundcardsinthe1980snotonlymarkedthecomputer'sabilitytoprocessaudio,butalsomarkedthedevelopmentofcomputers.Finallybegantoenterabrand-newstage:thestageofmultimediatechnologydevelopment.TheestablishmentofMPEG(MovingPictureExpertGroup)in1988contributedtothedevelopmentofmultimediatechnology.Enteringthe1990s,withtheimprovementofhardwaretechnology,sincethe80486,themultimediaerahasfinallyarrived.

Sincethe1980s,thespeedofmultimediatechnologydevelopmenthasbeenamazing.However,nomatterhowcomplicatedthetechnologyisandhowchaoticthedevelopment,thereseemtobetwomainlinestofollow:oneisthedevelopmentofvideotechnology,andtheotheristhedevelopmentofaudiotechnology.SincetheemergenceofAVI,videotechnologyhasenteredaperiodofvigorousdevelopment.ThethreemajorclimaxesduringthisperiodwereAVI,Stream(streamformat)andMPEG.TheemergenceofAVIistantamounttolayingastandardforcomputervideostorage,whileStreammakesitveryeasytobroadcastvideoontheInternet,andMPEGmaximizesthepopularizationofcomputervideoapplications.Thedevelopmentofaudiotechnologyhasroughlygonethroughtwostages,oneisWAVandMIDI,whicharemainlystand-alonedevices,andtheotheristhedevelopmentofvariousnetworkmusiccompressiontechnologiesthatappearsubsequently.

FromPCspeakerstoinnovativesoundcards.

1.Videoconferencingsystem

Thebreakthroughofmultimediatechnology,thematurityofwideareanetworkandthesupportofdesktopoperatingsystemmakevideoconferencingsystemanewhotspotformultimediatechnologyapplications.Itisanimportantmultimediacommunicationsystemthatintegratestheinteractivityofcomputers,thedistributionofcommunications,andtheauthenticityoftelevision.

2.Virtualreality

Virtualrealityisanedgetechnologycloselyrelatedtomultimediatechnology.Itintegratescomputerimageprocessing,simulationandsimulation,sensortechnology,anddisplaysystem.Technologyandequipment,intheformofsimulation,provideuserswithathree-dimensionalimageenvironmentthattrulyreflectsthechangesandinteractionsofoperatingobjects,therebyformingavirtualworld,andprovidinguserswithavirtualworldthroughspecialequipment(suchashelmetsanddatagloves).Thisvirtualworldinteractswithathree-dimensionalinteractiveuserinterface.

3.Hypertext(Hypertext)

Hypertextisatextprocessingtechnologydevelopedwiththedevelopmentofmultimediacomputers.Atthesametime,apowerfulmeansofcomprehensivelyexpressinginformationisaneffectivetoolformultimediaapplications.

4.Homeaudiovisual

Actually,themostvisibleapplicationofmultimediaistheintroductionofdigitalmusicandvideointothehome.Becausedigitalmultimediahastheadvantagesofconvenienttransmissionandstorageandhighfidelity,itiswidelyfavoredbypersonalcomputerusers,andalargenumberofspecializeddigitalaudio-visualproductshavealsoenteredthehome,suchasCD,VCD,DVDandotherequipment.

Materialformat

Introduction

Inpractice,itoftenhappensthatduetoimproperselectionofthestorageformatofpictures,audio,animationandvideo,multimediacoursewaretakesupalotofspaceandqualityTherefore,balancingtherelationshipbetweenfilesizeandqualityistheprimaryconsiderationformakingcourseware.

Undernormalcircumstances,thelargerthestoragespaceinthecomputer,thebetterthequalityofmaterialsofthesametypeandthesamecontentbutindifferentformats,butthiswilldirectlyleadtolargecourseware,difficulttotransmit,andwasteofsystemresources.Therefore,whenchoosingmaterials,besuretochoosefilesofmoderatequalityandformat.

Regularapplicationofcourseware

Picturematerial:Ifimagesareinvolvedincoursewareproduction,JPGformatisgenerallyused,andthesizeiscontrolledbetween100-200KB;Ifgraphicsareinvolved,GIFformatisgenerallyused,andthesizeiscontrolledwithin100K.

AudioMaterial:GenerallyuseWMAorMP3formataudiofiles,andtheflowrateiscontrolledbetween16~128Kb/s.

Animationmaterial:generallyuseGIFandSWFformatanimationfiles,theformerissuitableforsmallcartoonanimation,thesizeiscontrolledwithin100K,thelatterissuitableforvarioustypesofanimation,interactiveIthasstrongperformance,smoothplayback,andthesizeisgenerallycontrolledwithin10M.

Videomaterial:VideofilesinWMVformatareoftenused,andtheflowrateiscontrolledatabout250KB/S.

Multimediatechnologyisacomputercomprehensivelyprocessinggraphics,images,text,audioandvideoandotherinformationanditsstorageandtransmissiontechnology.Itcanbedividedintotwoparts:multimediahardwaretechnologyandsoftwaretechnology.Thewidespreaduseofcomputershasprovideduswithawealthofimages,musicmaterialsandproductionmethods.Makemultimediaintotheclassroomareality,andallthiscanbedoneeasilywithamultimediacomputer,avideographicscapturecard,somesoftwarewithcapturefunction,adigitalcamera,ascannerandarecorder.Theapplicationofmultimediaenablesstudentstoappreciatemoreandmorebeautifulobjectsintheteachingprocess,andprovidesareliablematerialbasisfortheimprovementoftheiraestheticqualityandthinkingability.

Howtoobtain

Multimediacoursewarematerialscanberoughlydividedintoseveralmainformssuchastext,graphics,images,audio(sound),video,andanimation.

Textmaterial

Textmaterialisusuallysavedasfiletext.Commonformatsare:txtfile,docfile,rtffile,wpsfile,pdffile,etc.

Theinputofthefileusuallyusesthekeyboard,andcanalsobeinputbyhand.

Usuallytextmaterialscomefromthetextbooksandmaterialslearned,websites,etc.

Undernormalcircumstances,thetextcontentofawebpagecanbecopieddirectly,ordirectlysavedasawebpagefileoratextfile.

Specialfontsorartisticwordscanbecapturedwithacapturetoolandthenprocessedintopicturesbeforeuse.

Graphicimagematerial

Theformatofgraphicimagematerialisgenerally:.jpg,.bmp,.gif,.tiff,.png,etc.,

screencaptureOrscreenhardcopy:

UsingHYPERSNAPorSnagitandotherscreencapturesoftware,youcancaptureanycontentdisplayedonthecurrentscreen.YoucanalsousetheALT+PRINTSCREENprovidedbyWindowstodirectlyputthepicturedisplayedinthecurrentactivewindowintotheclipboard;

Scaninput:

Thisisacommonlyusedimageacquisitionmethod.Ifwewanttoputsomeillustrationsintextbooksorotherbooksinmultimediacourseware,wecanscanandconverttheimagesintocomputerdigitalimagefilesthroughacolorscanner.Fortheseimagefiles,wealsoneedtousePhotoshoptoperformsomethingssuchascolor,brightness,andcontrast.,Sharpness,formatsize,etc.tomakeupforthedefectsleftduringscanning;

Usingadigitalcamera:

Withthecontinuousdevelopmentofdigitalcameras,itissavedtoIntheinternalmemorychipofthecamera,thedataistransmittedtothemultimediacomputerthroughthecommunicationinterfaceofthecomputer,andthenprocessedinthecomputerusingsoftwaresuchasPhotoshopandisee,andthenappliedtothemultimediasoftwaremadebyus.Usingthismethod,youcaneasilyandquicklyproducedigitalimagesofactualobjectssuchastouristattractions,experimentalinstruments,people,etc.,andtheninsertthemintothemultimediacourseware;

Videoframecapture:

UsingvideoplaybacksoftwaresuchasSuperJieba,Kingsoft,etc.,thevideoimagedisplayedonthescreencanbecapturedinasingleframeandstoredasastillimage.(LinktoHeroJiebascreenshotpage)Ifthecomputerhasanimagecapturecardinstalled,wecanuseittocaptureacertainframeofthevideoimagetoobtainadigitalimage.Thismethodisoftenusedwhenitisnecessarytotakeoutthevideoinothermultimediacourseware.Usedinourmultimediasoftware.Thismethodissimpleandflexible,buttheimagequalityproducedisgenerallydifficulttocomparewiththescanningquality;

CDcollection:

Forexample,variousplantpicturelibraries,animalpicturelibraries,officesuppliespicturesLibrary,etc.ThepicturesintheCD-ROMareofhighdefinitionandwell-made,andthesamepictureisalsostoredinmultipleformats.TheseCD-ROMscanbeboughtinbookstores,etc.ItisashortcuttoselectthedesiredimagefromtheCD-ROMinthemateriallibrary;/p>

Onlinedownloadoronlinepicturelibrary:

Thereareavarietyofveryrichresources,especiallyimageresources.Fortheimagesonthewebpage,wecandownloadandstoretheimagesonthewebpageinthelocalmachinebyplacingthemouseonthedesiredimageandpressingtherightbuttononthepop-upmenuandselecttheoptiontosavetheimage;Thewebsiteprovidesimagedownloadtoolssothatwecandirectlydownloadtheimagematerialsinthemateriallibrarytothelocalmachineforuse.

Usespecialgraphicsandimagecreationtools:

Forthosegraphicsmaterialsthatwereallycannotgetthroughtheabovemethods,wehavetousedrawingsoftwaretocreatethem.CommonlyusedareFreeHand,Illustrator,Careldraw,etc.Thesesoftwareallprovidepowerfulgraphicsdrawingtools,coloringtools,specialeffectsfunctions(filters),etc.,andthesetoolscanbeusedtocreatetheimagesweneed.

Audiomaterial

Theaudiointhecoursewareisgenerallybackgroundmusicandeffectmusic,anditsformatismostlyWAV,SWA,MIDI,MP3,CDandotherforms.

Thewaystoobtainaudioare:oneisthematerialCD;theotheristheresourcelibrary;thethirdistheonlinesearch;thefourthisfromCDandVCD;thefifthisfromtheexistingtapes;thesixthisfromthecoursewareGetin.

Therearemanywaystoprocessaudio.Herearesomepracticalmethodsofoperation:(1)Usetheaudiorecorderthatcomeswiththesystemtoeditsoundfiles;(2)UsethesupersolutionofthesupersolutionsoftwareAudiosolutiontyrantseditsoundfiles;(3)Useotheraudioconversionsoftwaretoeditsoundfiles.

Videomaterial

Theformatofvideomaterialisgenerally:.wmv,.avi,.mpg,.rm,flv,rmvb,mpeg,etc.

Theacquisitionofvideomaterialsismainlyfromresourcelibraries,e-books,coursewareandvideos,VCDs,DVDs,andvideofilescanalsobefoundontheInternet.Thevideomaterialsintheresourcelibraryande-bookscanbecalleddirectly,andthevideofilesinthecoursewarearegenerallyplacedoutsidetheexefile,andwillnotbepackagedwiththeexe,andcanalsobecalleddirectly.Thedatainthevideocanbecollectedwithacapturecard.Ifthereisnosuchdevice,itcanbeprocessedinaVCDproductionshop,andthevideodatacanbeconvertedintoMPGEformatorAVIformatandusedafterburning.VCDcanbedirectlyprocessedbySuperJieba,butitshouldbenotedthatDVDformat(MPGE4)cannotbeuseddirectlyinAuthorware.MPGE4conversionsoftwaremustbeinstalledtoconverttheformatbeforeitcanbeusednormally.

Inshort,thecollectionandprocessingofmaterialsrequiresmultiplesoftwareandmultipleforms.Thesoftwareandmethodsdonotnecessarilyhavetobeused.Itisnecessarytodecidehowtodealwithitaccordingtothespecificsituationandspecificenvironment,inordertoachievethebestresultswiththemosteconomicalandconvenientmethod.

Media

Themostimportantfeatureofmultimediateachingistotransformabstractpreachingintoimagepresentation.Theproductionofartcoursewaremuststartwiththeteachingmaterialitself,carefullyanalyzeandstudytheteachingmaterial,findoutthebreakthroughsandkeypointsanddifficultiesofteaching,andmakethecoursewareaccordingtotheactualneedsofteaching.Forexample,whenweareteachingthe"CompositioninPainting"lesson,iftheteachercanusemultimediatodesignacoursewarethatdemonstratesthedifferentvisualeffectsofthedrawnobjectindifferentpositionsanddifferentsizesonapainting,thentheteachingeffectwillbeItwillbeingreatcontrasttotheeffectofnocoursewaredemonstration.Theuseofmultimediateachingcoursewarecanvisualizesomeabstractthingssuchasthethinkingprocess,whichisconducivetothedevelopmentofstudents'thinking.Inaddition,intheteachingof"MyMangaPortrait",studentsarerequiredtounderstandthecomicprocessofcomicsandtheprocessoftransformingrealcharactersintocomics.Ifyoucancollectsomephotosofstudentsandyourselfbeforemakingthecourseware,andthenuseAdobePhot0ShopandPhotolmpacttoperformcolorhigh-contrast,stretching,anddeformationprocessing,anduse10-20photosfortheprocessofchangingthephotos(realcharacters)tocomics.Theimageswithslightlychangedimagesaredisplayed,sortedaccordingtotherequirementsoftheteachingandmadeatitle,andthenplayedunderthePhotoImpactAIbum.Duringteaching,studentsareallowedtoobservetherealimagegraduallytransitioningtocomics,withsomeanimationeffects,sothatchildrenwillbedeeplyattracted,theirenthusiasmwillbefullymobilized,andthepurposeofteachingwillberealizedinaverypleasantatmosphere.TeachingTheeffectisverygood.Onthecontrary,ifthetraditionalteachingmethodisadoptedinanotherclassofthesamegrade,thestudentshaveapoorgraspofknowledge.Theuseofmultimediateachingmethodsmakesiteasierforteacherstocreateabeautifulatmosphereandmakesstudentsinfectedbybeauty.Appreciationisanimportantmeansofaestheticeducationforstudents.Inadditiontospecialappreciationclassesinprimaryschoolarttextbooks,therearecontentforstudentstoappreciateintheteachingofeachlesson.IfyoucanusefilmandtelevisionworksrelatedtothecontentoftheworktomakeitintoavCDformatWithappropriatemusicandcommentary,itwilldeepenstudents’understandingofthework.Forexample,whenenjoyingthepaintingof"TheFiveHeroesofLangyaMountain",ifyoucanplaythemovieclipof"TheFiveHeroesofLangyaMountain"withcommentaryfirst,onthescreen,thefiveheroesresolutelyjumpafterfightingtheenemyuntiltheyrunoutofammunitionandfood.Downthecliff.Aftershowingthepaintings,studentswillbeabletounderstandthetragicandmajestyofthepaintingsandthegreatnessofthecharactersmoreeasily.Thescreensdisplayedonthecomputerareveryrich(morethan1.6millioncolors),withanimationeffects,storylines,andbeautifulmusic,sothatthestudents'learningenthusiasmwillbemobilizedtothegreatestextent.Makeartclasstrulyentertainingandeducatingpeoplethroughbeauty.Theseexamplestellusthatthebenefitsofcomputermultimediatechnologytoteachingareobvious.Thenourteachingconcepts,theguidingideologyofteachingdesign,theroleofteachers,etc.willhavetoundergomajorchanges.Weshouldpaymoreandmoreattentiontothemeaningconstructionofstudents'knowledgeofwhattheyhavelearned.Instructionaldesignshouldbetransformedfromknowledge-centeredtoresource-centeredandstudent-centered.Theentireteachingshouldbeopentoresources,learningknowledgeinasubjectYoucanacquireknowledgeofmanyothersubjects,andcompletethecultivationofvariousabilitiesbasedonthepossessionofabundantresources.Studentsshouldbecomethemainbodyoflearning,andteachersshouldbecometheinstructors,helpersandorganizersofstudents'learning.Accordingtotheorderofcultivatingstudents’abilitiesfromhightolow,itfocusesoncultivatingstudents’informationacquisitionandanalysisabilities,informationprocessingabilities,collaborationabilities,andexplorationandinnovationabilities.Theinformationsocietyneedsnewtalentswithinformationability,andinformationabilityreferstotheabilitytoacquire,analyzeandprocessinformation.Withtherapiddevelopmentofnetworktechnology,networkresourcescanbesaidtobevast,howtoquicklyandaccuratelyfindtheresourcesyouneedinthevastoceanofinformation,howtoquicklyjudgethevalueofresourcesandmakechoicesaboutthem,andhowtoreasonablyuseresourcesRecombinationfortheirownuseisrelatedtothesuccessorfailureofteachers'teaching.Theuseofmultimediainformationtechnologytoprovidearesourceenvironmentistobreakthroughthelimitationofbooksasthemainsourceofknowledge,andusevariousrelatedresourcestoenrichclosedandisolatedclassroomteachingtogreatlyexpandTheamountofteachingknowledge.Sohowdoteachersusecomputerstobuildamultimediamateriallibrarythatisconvenientandconducivetotheproductionofcourseware?Infact,weonlyneedtopayattentiontoandaccumulate,payattentiontothecollectionandproductionofmultimediamaterials,thatis,text,images,animation,soundandvideoBycollectingandpreparingvarioustypesofmultimediamaterialssuchasimages,youcanbuildaconvenientandeffectivemateriallibraryformakingundergraduatecoursewarebyyourself.Theconstructionofourmateriallibrarycanbeachievedinthefollowingways:

Preparationoftext

Thetextinthemultimediamateriallibraryismainlyusedtopresenttitles,buttonnames,menunames,andteachingcontent,etc.,It

isthemaincomponentofthemateriallibrary,andmainlyadoptsthefollowingtwoforms:

Ordinarytext:inputtextcontentdirectlyinthesystemcreationenvironment,orthroughexternaltextEditingsoftware(suchasWPS,WORD,etc.)makestextfilesorRichTextformatfiles(RTEformat),andusesfunctionsinbasicdevelopmenttools(suchasVisualBasic)toreadthepresentationarea.Thetwomethodshavedifferentpurposes.Thetextfileenteredintheauthoringenvironmentismainlyusedforoccasionswheretheamountoftextisnotlargeandtherearenospecialrequirements.Ifalargeamountoftextinputisrequired,andthedisplayofthetextrequirescertainconditionalcontrol,youshouldconsidermakinganexternalfileorRTEfileexternally;

Graphictext:Thegraphicfileisrelativetotheruntimeoftheapplication.Intermsofthetextcontentseenbythemanipulator.

Strictlyspeaking,thistypeoffileshouldactuallybelongtothegraphiccategory,whichiscalledgraphictext.Theamountofmaterialforgraphictextisrelativelylarge,butithasitsownadvantages.Youcanperformspecialeffectsprocessingongraphictext,suchastransparentcharacters,three-dimensionalcharacters,andgradientcharacters.Thegraphictextisnotonlyveryartistic,butalsoveryexpressiveandappealing.ThegraphictextinthemultimediamateriallibrarycanbemadeingraphicsoftwaresuchaspaintbrushorPhotoshop5.0.

Preparationofimages

Theimagesinthemultimediamateriallibraryaremainlyusedforbackgrounds,illustrations,graphicalinteractionareasandgraphicalbuttons,etc.,itcan

throughthefollowingWaystoachieve:(1)Usetheimagesintheimagemateriallibrary.Thebackgroundimages,buttongraphicsandcursorgraphicsinthemultimediamateriallibrarycanbeselectedfromthemateriallibrary.Alargenumberofimagematerialsareprovidedintheimagemateriallibrary,whicharegenerallystoredinharddisksorCD-ROMs.Wecanselectmanyimagessuitableforuseinthemultimediamateriallibrary.(2)Usethescannertoinputtheimage.Thefunctionofthescannercandigitizeexternallydrawngraphics,photosandprintedpicturesandinputthemintothecomputer.Therelevantillustrationsoftheteachingcontentinthemultimediamateriallibraryareobtainedthroughthismethod.(3)Usedrawingsoftwaretomake.UseWindowsPaintbrushorprofessionaldrawingsoftwarePainter,CorelDraw,etc.todrawsimplestrokesinmultimediateachingsoftwaredirectlyonthecomputer.(4)Usescreencapturetoobtainimages.Forsomeicons,buttongraphicsandothermaterials,aspecialapplication(suchasPiazzus)isgenerallyusedtocapturethescreen.(5)Useimagesynthesistoobtainimages.Imagesynthesisreferstotakingoutpartorpartsofmultipleimagesinimageprocessingsoftwareandrecombiningthemintooneimage.ImagesynthesisinthemultimediamateriallibrarycanbeperformedinimagesoftwaresuchasPhotoshopandPhotoStyle.(6)Usegraphicsproductionsoftwaretogenerateimages.Inthemultimediamateriallibrary,youcanuseprofessionalanimationproductionsoftware3DstudioMaxtocreatethree-dimensionalcharactersandsimulatedobjects.

Mediainscription

Preparationofanimation

Animationisasimulationofthemovementandchangeofthings.Theanimationsinthemultimediamateriallibraryarebothtwo-dimensionalandthree-dimensional.Therefore,thetypesofanimationproductioncanbedividedinto:(1)Two-dimensionalanimationproduction.UseAnimatorProandDirectortwosoftwaretoolstoachieve.AnimatorProisaprofessionalanimationproductiontoolthatcangeneratetraditionalanimation,bitmapanimation,filmanimation,deformationanimation,textanimationandcoloranimation.AlthoughDirectorisamultimediaauthoringtool,productsmadeinDirectorcangenerateanimationfiles,suchasMMMandAVIformats,andDirectoritselfhasstronganimationproductioncapabilities.Therefore,youcanuseDirectortomaketwo-dimensionalanimations.(2)Three-dimensionalanimationproduction.Comparedwithtwo-dimensionalanimation,three-dimensionalanimationnotonlyhasthecharacteristicsoftwo-dimensionalanimationXYplane,butalsoaddsdepthdimension.Throughmaterialprocessing,thetextureofmovingobjectsisproduced.Undertheactionoflightandcamera,themotioneffectisverygood.lifelike.The3Danimationinthemultimediamateriallibraryismadein3DstudioMax.3DstudioMaxhasaverypowerfulanimationfunction,andthecoloringoutputspeedisrelativelyfast.Inadditiontothedescriptionofthemotionprocess,thefinalanimationfilealsointegratessoundelementstoenhancetheperformanceoftheanimation.Inaddition,wecanalsodirectlyuseprogramminglanguagetowriteanimationprograms.

Audioproduction

Thesoundtypesofthemultimediamateriallibraryincludesound,musicandeffectsound.Thesoundreferstothedemonstrationsoundandcommentary,themusicreferstothebackgroundmusicandthemainmusic,andtheeffectsoundisusedforthekeys.Theproductionofaudiorequireshardware,thatis,thesupportoftheaudiocard.TheprocessingsoftwarechoosesWaveStudio2.0whichisattachedtoCreative,andmakestheaudioofthemultimediamateriallibrarythroughthefollowingmethods(1)sound.First,recordMandarinonametaltape,andtheninputtheaudiosignalintothecomputerthroughtherecordingdeck,andthendigitizetheaudiosignalforfurtherprocessing.(2)Music.ChooseaCDplayerorarecordingdecktoinputtheaudiosignalintothecomputerfordigitization.(3)Effectsound.ChoosetosavethecontentintheharddiskorCD-ROMsoundeffectlibrary.

Theproductionofvideoimages

Inthemultimediamateriallibrary,theprocessingofvideoimagescanadopthardwarecompressionandsoftwareplaybackmethods.ThismethodistocombinethevideosourceimageUseavideocardtocapture,andthenselectthecorrespondingcompressionstandardforstorage.ThevideocardcanuseCreative'sRT300videocard,andthecompressionstandardusesIntel'sIndeovideoInteractive.VideocompressionandprocessingsoftwareselectsPremiere,VideoStudio,VideoForWindowsAndsoonsoftware.

Inaddition,therearemanyexcellentmultimediamaterialsinsomeelectronicpublications,whichshouldbecollectedandsortedoutatordinarytimes.Thisisalsoaneffectivewaytoimprovetheproductionspeedandthequalityofthemultimediamateriallibrary.Whatwehavesaidaboveisallaboutthecollectionofmaterials.Next,wewillorganizeandeditthematerialssothatwecanoutputthesematerialswhenmakingthecourseware,sothatwecanmakeexquisitecoursewarequicklyandwell.

TheconceptofusingmultimediatomakecoursewarewasintroducedintoChinafromabroadinthelate1970sandearly1980s.Afterthe1990s,themultimediafunctionsofcomputersbecamestrongerandstronger.VariouscoursewaredevelopmenttoolplatformsoftwaresuchasAuthorWareDirector,FounderOrsi,etc.madethecoursewaredevelopmentmoreandmoreconvenient,andtheexpressivenessofthecoursewarebecamemorepowerful.Foraperiodoftime,thedesign,developmentandapplicationofcoursewarehasgraduallybecomethecenteroftheapplicationofeducationaltechnologyinschoolteachinginourcountry.

Butinpractice,wegraduallydiscoveredthatalthoughcoursewarecanassistteachersincreatingteachingscenariosandteachingknowledgeinclassroomteaching,therearetwomoreandmoreobviouslimitationsinthedesignofcourseware.Thefirstisthatinthepast,thecoursewaredesignideasthatweredeterminedinadvancebytheteachingdesign,hadfixedprocedures,stereotypes,closed,andintegratedcoursewaredidnotadapttotheever-changingrealityofclassroomteaching;thesecondwasthatthecoursewarewasoftenbasedonteachingasthecenter.Thedesignthinkingneedstobeadjustedinthetransformationofthelearning-centeredteachingmodel.Aimingatthefirstlimitationofthecoursewarethinking,somepeopleproposedtheintegrablewarethinking,whichistodevelopateachingsoftwaresystemthatteachersandstudentscombineandusemultimediateachinginformationresourcesaccordingtoteachingneeds.Thecoreofintegrablewareishumansubjectivity,elementarynatureofteachingresources,reorganization,opennessandsoon.Aftertheconceptofintegrablewarewasputforward,itwasquicklywelcomedbyfirst-lineteachersinprimaryandsecondaryschools.Moreandmoreteachersandsomeeducationalsoftwarecompanieshavegraduallyshiftedthedesignideasofmakingcoursewareinthepasttoopen,combinable,andmicro-teachingunitsbasedonmateriallibraries.Theideaof​​thelibrary'sintegrablewareteachingsoftware.Theyusetheideaof​​IntegrableWaretodesignauniversalnetworkcoursecombinationframeworkplatform.Theteachingcontentofeachsubjectonlyneedstobedesignedintounitsthatcanbefreelycombinedandfilled,whichimprovestheopennessandcombinationofcoursesandthereusabilityofteachingresources.Andthedynamicupdatefunctionofcoursecontent.Then,asateacher,wemustalsochangeourthinking.Wemusttransferfromcoursewaredesigntoteachingdesigninaninformationenvironment,establishneweducationalconcepts,mastertheuseofinformationtools,andlearntomakefulluseofmoderninformationtechnologyandInformationresources,scientificallyarrangethevariouslinksandelementsoftheteachingprocesstoachievetheoptimizationoftheteachingprocess.

Developmenttrend

Futureresearchonmultimediamainlyincludesthefollowingresearchaspects:datacompression,multimediainformationcharacteristicsandmodeling,multimediainformationorganizationandmanagement,multimediainformationperformanceAndinteraction,multimediacommunicationanddistributedprocessing,multimediahardwareandsoftwareplatform,

high-definitiondisplay

virtualrealitytechnology,multimediaapplicationdevelopment.Lookingforwardtothefuture,interactivemultimediathatblendsnetworkandcomputertechnologywillbecomethedirectionofmultimediadevelopmentinthe21stcentury.Theso-calledinteractivemultimediareferstonotonlyreceivingandselectinginformationfromthenetwork,butalsosendinginformation.Theinformationistransmittedintheformofmultimedia.Usingthistechnology,peoplecanshopathomeandordertheirfavoriteTVprograms.Therealizationofinteractivemultimediatechnologyinthe21stcenturywillbebasedontelevisionsorpersonalcomputers.Itisdifficulttosaywhowilldominatethefuturemarket.

Thefutureofmultimediaisexciting.Theamountofdigitalinformationinourliveswillincreasedramaticallyinthenextfewdecades,andthequalitywillalsobegreatlyimproved.Multimediaisenteringmanyaspectsofpeople'slivesinarapidandunexpectedway.Thegeneraltrendisthatallaspectswilldevelopinthedirectionofintegrationoftoday'snewtechnologies,including:large-capacityCDstorage,theInternet,andinteractiveTV.Thissynthesisisatthecoreofabroadrevolution.Itnotonlyaffectsthewayinformationispackagedandhowweuseit,butitwillalsochangethewaywecommunicatewitheachother.