GIF Amathuluzi

Guqula GIF kuya futhi kusuka kumafomethi ahlukahlukene

Mayelana GIF

Amafayela e-GIF asekela izithombe ezinyakazayo kanye nemibala elinganiselwe, afaneleka kakhulu izithombe ezilula, ama-meme, kanye nezithonjana.

Ukusetshenziswa Okuvamile

Ukudala izithombe ezinyakazayo zemidiya yezenhlalo
Ukwenza izithombe ezilula zokusabela
Ukubonisa ihluzo ezilula ngokusobala

GIF Imibuzo Evame Ukubuzwa Yokuguqulwa

Yini ihele GIF?

I-GIF (Ifomethi Yokushintshana Kwezithombe) iyifomethi yesithombe se-bitmap esekela izithombe ezinyakazayo kanye nemibala engaphezulu kuka-256.

Ingabe uanimashiyo uhlala uma ngiguqula i GIF?

Kuxhomekeka ngokuphelele kulesi simo. Guqula kufomethi ehlukile ekwaziyo ukudweba futhi amafremu nokulinganisa isikhathi sizohamba; guqula kufomethi ehlala khona futhi uzothola ifremu eyodwa, ngokuvamile ikuqala. Enye indlela ibaluleke kakhulu ekusetshenzisweni: i GIF ukudweba eguqulwe ibe yividiyo engokoqobo ivame ukuba nengxenye yobukhulu esezingeni elingcono, ngoba ama-codecs wevidiyo acindezela umthwalo ngokunembile futhi le fomethi ayisebenzi. I-GIF's 256-colour ceiling ibulala ama-gradients namavidiyo ahlala, futhi i-file sizes yayo ye-animations iyisilungiselelo se-magnitude esibi kuna-WebP noma i-MP4.

Ingabe kukhona okulahlekile uma i-GIF iguqulwa ibe yifomethi engekho emthethweni?

Akukho data ye-pixel. GIF igcina isithombe ngokugcwele ngaphandle kokuyifinyelela, ngakho ukuguqulwa phakathi kwefomethi ezimbili ezingalahleki kuphindeka futhi kungaphinda kuphindeka ngaphandle kokulahlekelwa. Okungakwazi ukulahleka yizinto zonke ezingaphansi kwe-pixels — amaprofayili wemibala, ukubukeka okucacile, ukubukeka, i-metadata efakwe — ngoba usizo lwalezi luhluka kakhulu phakathi kwefomethi kune-pixel storage. I-GIF ayilahleki kodwa iphele kumbala we-256-palette ngefremu ngayinye, usebenzisa ukucindezeleka kwe-LZW nombala owodwa ocacile.

Kungani okuqukethwe kwewebhu kuthunyelwe njenge GIF?

Ngokuba ifakwe ngokukhethekile le misebenzi: amafayela amancane, ukuqala ngokushesha, akukho plug-in futhi akukho layisense lokukhathazeka. Lokhu kwenza kube ngcono ekunikezelweni futhi kungaphawuleka nganoma yini enye - amathuluzi okuhlela, ama-gallery wefoni namadivayisi adala ahlala ekhohlwa. Ukushintsha ifomu elijwayelekile-lomsebenzi yilokho okukwenza okuqukethwe okulayishelwe kusebenziseke ngaphandle kwe-web. Umbukiso we-GIF udlala kuwo wonke ama-imeyili, ama-forum, ama-apps wokuxoxa nama-browser wonke awenza ngaphandle kokuxoxa nge-codec.

Kungani amasekondi ambalwa we GIF animation afana nehele elikhulu?

Ngenxa yokuthi igcina amafreyimu, hhayi ukushayela. Ifreyimu ngayinye icindezelwa ngokwayo ngaphandle kokubhekisa kulowo ongaphambili, ngakho isithombe esincane sizoba nezithombe ezingu-100 ezigcwele emgqeni futhi ifayela lihamba ku-megabytes. I-codec yevidiyo ikhodekisa ushintsho phakathi kwamafreyimu endaweni yalokho futhi ifaka isithombe esifanayo engxenyeni yobukhulu, ngakho-ke ukushintsha umsindo wevidiyo kuyindlela ejwayelekile yokuxazulula ikhasi elishayela kancane.

Kungani ama-gradients ebonakale ebandayo ku GIF?

Ngenxa yokuthi umbala uvela kwiphaleti elihlobene, hhayi ukuba mahhala. Wonke i-pixel ikhombisa umngenisi kwithebula elincane, ngakho izulu eliqala ngezigidi zamabala licindezelwa zibe ngamakhulu amabili futhi izinyawo phakathi kwazo zibonisa njengezibhamu. Ukufihla ifihla ngezindleko ze-texture emnyama. Ukushintsha umbala ogcwele ususa isikhala, kodwa ngeke ikwazi ukusungula amabala amasha asele akhishwe.

Ingabe i-GIF igcina isizinda esicacile?

Yebo - ifomu ligcina i-alpha channel engokoqobo, ngakho-ke ukucisha izithonjana, izithako ezibomvu kanye nezibopho zigcina ukubukeka kwazo ngaphandle kokufika ku-rectangle emhlophe. Ukushintsha kufomethi ngaphandle kwe-alpha kuyilapho kudlula khona okungalungile: izindawo ezibonakalayo zigcwele umbala oqinile, ngokuvamile omnyama noma obomvu, futhi akukho indlela yokubuyela emuva encane yokufihla isithako futhi.

Ingabe ifreyimu yokuhlela isikhathi kanye nokujikeleza ihlala iguqula i GIF?

Kufomethi enye ekwaziyo ukubukeka, yebo — amaphutha ngefremu ngayinye kanye nokubalwa kwe-loop kugcinwa kwifayela futhi kuthunyelwe. Kufomethi ehlala khona ifremu eyodwa kuphela ephila, ngokuvamile i-first. Kuvidiyo i-loop flag ayikwazi ukubuyela lapho, ngoba umdlali ukhetha ukuthi uphinde. Khangela isivinini sokudlala ngemuva lapho i-frame rate ishintsha: i-rate eqinile ingafinyelela kuphela amaphutha aguqukayo nge-frame.

Ingabe kubaluleke ukuthi GIF ingaphezu kweminyaka engu-30?

Ubudala bukhona akuyona inkinga - amafomethi amaningi onyaka akhona alungile, ngokucacile ngoba konke kudlule iminyaka eminingi ukuwafaka. Okubalulekile ukuthi unyaka uthathe isinqumo: amafayela amancane, amaprosesa aphansi, akukho nethiwekhi, futhi amakhono angeke afune umuntu. lapho amanani ahlala khona, ifomu lilungile. lapho ayikho, lena yisizathu sokushintsha. I-GIF iyifomethi ye-CompuServe ye-1987, futhi isizathu esingenalutho sokuthi ikhulele ukuthi isebenza ngokuzijabulisa.

Ingabe ngisebenzisa GIF ngokuqondile kwikhasi le-web?

Yebo — wonke umsakazi okhona uyenza ngokusemthethweni, ngakho-ke adinga ikhophi engekho futhi adinga ukuguquka ngesikhathi sokushicilela. Imibuzo ekhona isisindo ngaphezu kokuxhasa: isithombe esifanayo kwifomethi yewebhu yamanje sivame ukuba isithathu sobukhulu ngekhwalithi ebonakalayo efanayo, okudinga ukukwenziwa nganoma yini ebonakala phezulu kwe-fold.

Ubani olawula i GIF?

Akukho muntu, futhi lokho kuyinto ebalulekile. Ulwazi oluthile luyimfihlo, umuntu angalisebenzisa ngaphandle kokubuza noma ukukhokha, futhi akukho nkampani engakwazi ukushintsha izimo ngemuva - ngakho-ke amafayela, amaqembu ajwayelekile namaqembu asemthethweni achaza amafomethi afana nalesi sinye sezinto ezikhona ezizovula eminyakeni eyisithupha. Ukuthengiswa akulona ukuhambisana, okulungile; kuyilapho akukho umhlinzeki odinga ukuwabiza uma ezinye izithuluzi zisebenzisa i-spec kahle.

Ingabe ngingenza ngiphinde ngibize isiqephu endaweni yokushintsha GIF?

Kunzima kakhulu, futhi kufanelekile ukuqonda ukuthi kungani: isithonjana siyisihloko, ngenkathi ama-bytes ngaphakathi kufakwe ngefomethi eyodwa ekhethekile. Ukushintsha igama kwenza ihele igama lakhe lithembisa okuthile okuqukethwe kwayo akusho ukunikela, futhi noma yini evula ihele noma liyiphoqa noma liyifunda kabi. Ukuphela kwephutha elincane yifomethi ezimbili ezikhona ngokusemthethweni ibhokisi elifanayo ngaphansi kwezinhlamvu ezahlukene — futhi ngisho lapho ukuphinda ubhale kahle kuphephile kunalokho ukushintsha igama.