WebM → GIF

Vula kulo mdlali, thola isikhathi bese uqaphela ikhodi lesikhathi, ngoba WebM akufanele ithathe izibonakaliso zesigaba ukuze ihambe. Chofoza kulo mhlaba wesikhathi sokuqala, ngeza isikhathi sokuhlala, futhi umguquli ubheka kuleso sikhathi futhi uqophe kuphela isikhala esicelayo. Ukufuna kulungile kwifreyimu, kodwa kungalungile kuphela njengoba inani linikezwa - hlola ngokubheka ngaphambi kokudlulisa kwividiyo 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 okulodwa kwathathwa njengesinqumo lapho libhalwe khona futhi alikho emqoka ngokungeza. Umguquli ufaka ikhodi noma yini etholayo emuva kuma-frames amnyama kuqala, futhi ama-frames afana nanoma iyiphi i-codec eyenza. Ukufaka ikhodi kuthatha imali engafani: ama-codecs amasha, asebenza kahle kakhulu athatha isikhathi eside ukukhishwa kunalawo adala, ngakho 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 elinye — 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 umsakazo omusha ngaphandle kweplugin, ngaphandle kwelayisense nemali yokuboshwa, okuyenza ibe yiphutha levidiyo efakwe kwi-web.

Akukho — a GIF iyifayela lesithombe, ngakho iqala ngesikhathi i-coded 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 evidiyoni: abafundi abacela ukuhamba okuncishisiwe, nama-imeyili asebenzisanayo abonisa ifreyimu eyodwa kuphela, bona lefreyimu futhi akukho okuningi. Khetha indawo yokuqalisa lapho i-frame yokuvala ifunda ngokunengqondo kuyo.

I-animated GIF isebenza kahle kakhulu kuma-clip angaphansi kwemizuzu engu-10. Ngaphesheya kwalokho ama-balloons wefayela (i-GIF ibalulekile nge-frame ngayinye engacindezelwa). I-animated ede kakhulu idinga i-WebP noma i-APNG esebenza kahle, zombili zisebenzisa ukucindezelwa kwevidiyo-codec-grade futhi zilinganiselwe kahle.

I-GIF ephilayo: 2 kuya ku-8 MB ku-480p ngokuya ngezinkinga zokuhamba. I-WebP ephilayo: 200 KB kuya ku-1 MB ku-resolution / quality efanayo. I-WebP ephilayo i-5 kuya ku-10x ingcono kune-GIF ku-quality ebonakalayo efanayo. I-GIF ayilahleki kodwa iphoqeleke kumbala we-256-palette ngefremu ngayinye, usebenzisa ukucindezeleka kwe-LZW nokucacile kwe-binary ngombala owodwa.

Ngokungajwayelekile sikhuphula isampula ku-15 fps ye-GIF ephilayo (ibhekana nobunzima ngaphezu kuka-25 fps) kanye ne-24 fps ye-WebP / APNG ephilayo (ephatha ama-rate aphezulu ngokucophelela). Nciphisa nge-frame-rate option uma umbukeli wakho uxhasa i-source rate.

Akukho — amafomethi GIF aphilayo (GIF, WebP, APNG) angagcina umsindo. Uma ufuna umsindo, bheka ibhokisi levidiyo (MP4, WebM) endaweni yefomethi yesithombe esiphilayo.

Yebo - isinqumo sokubalwa kwe-loop silawula ukuthi ngabe GIF i-loops iphela (iphutha), idlala izikhathi N, noma idlala ngokugcwele kabili. Ukubalwa kwe-loop kugcinwa ku GIF i-metadata yokuqoqa futhi kuhlonishwa yinoma iyiphi imboniso yamanje.

Izizathu ezimbili ezivamile. Okuqala, ukusatshalaliswa kwefremu-rate: 15 fps GIF kusuka ku-60 fps WebM kususa i-75% yefremu; lungisa nge-frame-rate slider. Okulandelayo, ukusatshalaliswa kwephakeji: i-GIF iphele kuma-256 amamibala futhi i-gradient-heavy WebM i-dithers ngokubonakalayo. Yishintshe ku-WebP ephilayo ukuze kube nombala ogcwele.

Yebo — ukhetho lokushintsha ubukhulu luyinciphisa i WebM ngezansi ngaphambi kokukhipha ifreyimu, okunciphisa kakhulu ubukhulu behele GIF. I-480p GIF kusuka ku-4K WebM incane kakhulu kune-16x 4K GIF. Sebenzisa /video-cutter/ ukugoqa ngenyathelo elilodwa.