WebM → GIF

Vula kulo mdlali, thola isikhathi futhi uqaphele ikhodi lesikhathi, ngoba WebM ayikho i-node ejwayelekile yokukhomba. Chofoza ku-start-time field, ngeza isikhathi, futhi umguquli uthola kuleyo ndawo futhi uthola ikhodi kuphela lendawo oyifunayo. Ukuthola kulungile kwifreyimu, kodwa kungalungile kuphela njengenani elinikezwayo — hlola ngokubheka ngaphambi kokudlulisa kwi-clip ende. WebM ilungile encane noma kuphi ngaphandle kwe-browser - ama-video editors, amafoni 'ama-galleries asekhaya nama-Smart TVs ahlala engaziboni.

A WebM yi-Matroska-family container, futhi le mindeni igcina ibhokisi ne-codec ngokuhlukile—ihele ligcina lokho okuhlobene nento ebhalwe futhi alikho emqoka nge-extension. Umguquli ufaka ikhodi noma yini etholayo emuva ku-frames amnyama kuqala, futhi ama-frames afana nanoma iyiphi i-codec ekhiqiza. Ukufaka ikhodi kuthatha imali engafani: ama-codecs amasha, asebenza kahle kakhulu athatha isikhathi eside ukukhishwa kunalawo adala, ngakho-ke amafayela amabili WebM anesikhathi esifanayo angathatha isikhathi esihlukile ukufinyelela ku-GIF. WebM idinga ukucophelela: VP8 noma VP9 ividiyo (AV1 manje) nge Vorbis noma Opus umsindo, futhi akukho okuthile okuningi.

Yebo, uma unefayela lakho. I WebM yilokho i-web esebenzisayo ngevidiyo engaphakathi kwelayini ngokucacile ngoba iziphequluli zidlala ngaphandle kweplugin, ngakho-ke i-clip edlalayo kwi-tab ivame ukuba yi-WebM elula egcina futhi ikhuphula lapha njengenoma iyiphi enye ifayela. Ukukhishwa kuyisidlali esisakazayo esinikeza iziqephu ezincane ezinamanani ngaphezu kwefayela elilodwa — lezi zidinga ukubuyiselwa emuva ngaphambi kokuba noma yini iguqulwe. Ilungelo liyinto ehlukile efanele ukubheka: ukukwazi ukufaka ividiyo akuyona into efanayo negunya lokushicilela kabusha i-animation eyenziwe kuyo. I-WebM idlala ngokusemthethweni kuwo wonke umsakazi omusha ngaphandle kweplugin, ngaphandle kwelayisense yemali kanye nokungabonisi kwepatent, okuyenza ibe yiphutha levidiyo efakwe kwi-web.

Akukho — a GIF iyifayela lesithombe, ngakho iqala ngesikhathi ikhishwa futhi ayihambisani nokudlala, ukuyeka noma ukulawula okugqwala nganoma yikuphi. Lokhu kuyinto yefomethi ngaphezu kwekhasi elihlala kulo, futhi yilokho okubangela ukuthi ifreyimu yokuqala ibaluleke kakhulu lapha kunalokho okuzokwenzeka kwividiyo: abafundi abacela ukuhamba okuncishisiwe, nabangani be-imeyili abaveza ifreyimu eyodwa kuphela, bona lefreyimu futhi akukho okuningi. Khetha indawo yokuqalisa lapho ifreyimu yokuvala ifunda khona ngokunengqondo.

I-animated GIF isize ama-clip angaphansi kwamasekondi angama-10. Okude kunalokho futhi i-output ikhula ngokushesha — i-GIF ayicindezelwanga-nge-frame, ngakho-ke ngisho nama-clip aphansi asebenza kuma-megabytes amaningi. I-animations ende, i-target animated WebP noma APNG, zombili zicindezela njenge-codecs yevidiyo yamanje.

I-GIF ephilayo ku-480p, imiphumela ejwayelekile yi-2-8 MB ngokuya ngezinkinga zokushaya. I-WebP ephilayo esinqumweni/umgangatho ofanayo, cabanga u-200 KB kuya ku-1 MB — i-WebP ephilayo isebenza kahle kakhulu kune-GIF ngekhwalithi yokubuka efanayo. I-GIF ayilahleki kodwa iphele kumbala we-256-palette ngefremu ngayinye, usebenzisa ukucindezeleka kwe-LZW nombala owodwa ocacile.

Ngephutha sikhuphula isampula ku-15 fps ye-GIF ephilayo (i-GIF isebenza kahle kakhulu ngaphezu kuka-25 fps kulabo ababukeli abaningi) kanye no-24 fps ye-WebP / APNG ephilayo (ephatha ama-rate aphezulu kahle). Ukhetho lwe-frame-rate ludlula iphutha ukuze lugcine i-rate yomsuka kusuka ku WebM yakho uma umbukeli wakho olindelekile uxhasa lokhu.

Akunalutho — amafomethi GIF aphilayo (GIF, WebP, APNG) agcinanga umsindo ngaso sonke isikhathi. Uma ufuna umsindo nge-clip yakho, bheka ibhokisi levidiyo (MP4, WebM, MKV) endaweni ye-GIF. Ama-embeds amaningi emphakathini (Twitter, Discord) aguqula ukuthunyelwa kwe-MP4 zibe ama-loops wokudlala ngokuzenzakalela we-GIF-style, akunika wena okungcono kwezimbili.

Yebo - isinqumo sokubala isixhumi silawula ukuthi ngabe i GIF ixhuma ngokugcwele (iphutha), idlala izikhathi N, noma idlala kabili futhi i stop. Ukubalwa kwesixhumi kugcinwa ku GIF i-metadata yesihlungi futhi kuhlonishwa yinoma iyiphi imbonisi yamanje, isiphequluli sewebhu, kanye ne-embed surface.

Izizathu ezimbili ezivamile: ukuncipha kwesampula yefreyimu-rate (sisusa i-30 fps WebM kuya ku-15 fps GIF ngokuzenzakalela — sicindezela i-freyimu-rate option ukubuyisela ubuhle) kanye ne-palette quantification (i-GIF iphele kuma-256 amamibala ngefreyimu, engeza ama-gradients ngendlela ehlukile ku-WebM okuqala akwenzenga). Guqula isiphetho ku-WebP ephilayo ukuqinisekisa umbala ophelele.

Yebo — ukhetho lokushintsha ubukhulu lukhuphula isingeniso ngezansi ngaphambi kokukhipha ifreyimu, okunciphisa kakhulu ubukhulu besikhathi esidlule GIF. I-480p GIF eyenziwe kusuka ku-4K WebM incane ngama-16x ku-diski kune-4K GIF. Ukunqunywa kuphathwa nge- /trim/ noma /crop/ isikhashana esihlukile sokuqhuba ngaphambi kokuguqulwa.