MOV → WebP

Ndiko, ndipo ndi njira yofulumira kwambiri kupeza nthawi mukufuna. A MOV kusunga Chapter zilembo mu chonyamula monga anatchedwa timestamps, kotero mndandanda angawerengedwe mosalekeza kuchokera pa fayilo ndi m'mbali-point padded mu start-time nyanja mosiyana ndi kukhala anapha kwa ndi maso. Give it a duration alongside and only that span is decoded, which is why the length of the rest of the MOV makes almost no difference to how long the job takes. MOV ndi mtundu wogwira ntchito olemba akufuna, chifukwa amasangalala anabwereza round-zoyendayenda mwa Final Cut Pro, Premiere ndi DaVinci Resolve popanda kuwonongeka kwa chiyambi.

Kuyambira pakupanga. A MOV ndi fayilo ya media ya ISO, ndipo magulu a banja amalemba kuzungulira ngati chiwonetsero chazithunzi m'chipindacho, osati posintha ma pixels - chifukwa chake clip yojambula yokhala ndi foni imatha kuwona bwino m'modzi mwa osewera ndikukhala pambali pamodzi. Animation imapangidwa kuchokera ku pixels yosinthidwa, kuti chiwonetserocho chiyenera kuvomerezedwa pambuyo polemba chiwonetsero choyamba; ngati chithunzicho chimabwerera kumbuyo, sinthanitsani chiyambi ndikusinthanso. Zonse zina za kamera kapena wolemba wolemba ndi nkhani yothandiza: kanema wa kanema, mzere wokhazikika wa ma frame. A MOV nthawi zambiri amatenga H.264 kapena HEVC kwa kutumiza, kapena ProRes pamene ndi kusintha mtsogoleri, limodzi ndi AAC kapena uncompressed PCM audio.

Chifukwa MOV siyimagwiritsa ntchito masamba a webusaitiyi, ndipo zomwe zimapanga zimasintha kuposa kutsimikizika. Sichisintha chilichonse pazosintha - fayilo imasinthidwa patsamba la seva, choncho chotengera chomwe chimavomereza chimasinthidwa mofanana ndi chomwe chimavomereza, ndipo palibe pakompyuta komwe kuli kofunikira kuti chigwiritsidwe ntchito. Ndikofunika kudziwa momwe malonda amagwira ntchito, ngakhale: animated WebP yomwe imabwerera ndi mtundu womwe umawoneka patsamba lililonse, ndipo izi zimasintha clip kuchokera ku chinthu chomwe webusaitiyi sichidzakhudzana ndi china chomwe chidzachitike. MOV owona ndi lalikulu, ndi kunja kwa Apple ecosystem kusewera thandizo ndi patchier kuposa MP4 - atsopano Android amaumba ndi ena Smart TVs adzakana iwo.

Lossy, kwa chilichonse chomwe chimayamba ngati kanema. Animated WebP ingakongoletse ma frame ake mosiyana: mode ya lossless imasunga ma pixel onse ndipo imagwirizana ndi zithunzi zopanda malire ndi mawu a pazenera, pomwe mode ya lossy imagwiritsa ntchito kuyembekezera kwa block-based monga momwe video codec imagwiritsa ntchito ndipo imagwirizana ndi zithunzi zachilendo. Frames za kamera ndi zokhala ndi ma granules ndi ma gradients omwe lossless compression sapeza mzere, choncho animation ya lossless ya kanemayo imatha kuyendetsa nthawi zambiri kuposa ya lossy yomwe imawoneka ngati yofanana. Ikani ya lossy ngati kuti chiyambi chake chinali kujambula kwa skrini kwa mawu owoneka bwino. WebP ndibe yachiwiri-mtundu kunja kwa browser — kusindikiza workflows, zaka zakale Office zomanga ndi ena foni galleries sakuvomereza izo.

Animated WebP imagwira ntchito bwino kwambiri pazolemba pansi pa 10 masekondi. Kuwonjezera pa zomwe mafayilo amapanga (GIF ndizomwe zimapangidwa ndi frame). Kwa ma animations ochepa, amagwiritsa ntchito WebP kapena APNG, omwe amagwiritsa ntchito kutsitsa kwa video-codec-grade ndi kukula bwino.

GIF yokhala ndi ma animations: 2 mpaka 8 MB pa 480p malinga ndi kuvuta kwa kuyendetsa. WebP yokhala ndi ma animations: 200 KB mpaka 1 MB pamodzi ndi kuwonekera / kudalirika. WebP yokhala ndi ma animations ndi 5 mpaka 10x yothandiza kuposa GIF pokhala ndi kuwala kofanana. WebP amapatsa modes lossy ndi lossless, ndi alpha kuwala ndi animation alipo m'modzi kapena m'modzi.

Mwachidule timalowetsa mpaka 15 fps kwa GIF yoanima (yokhala ndi mavuto owoneka bwino kuposa 25 fps) ndi 24 fps kwa WebP / APNG yoanima (yoyang'anira bwino kwambiri). Chotsani mwa kusankha kwa frame-rate ngati woyang'anira wanu amathandizira kuchuluka kwa chiyambi.

Sichoncho — mavidiyo a WebP (GIF, WebP, APNG) sasunga mawu. Ngati mukufuna mawu, yesani kujambula kanema (MP4, WebM) m'malo mwa kujambula zithunzi zosaoneka.

Yes - njira yowerengera loop-count imawongolera ngati WebP imayenda mopanda malire (default), imasewera nthawi N, kapena imasewera nthawi imodzi. Kuwerengera kwa loop kusungidwira mu metadata ya WebP yonyamula ndipo imalemekeza aliyense woonera wamakono.

Zifukwa ziwiri zofala. Choyamba, kuchepetsa kuchuluka kwa ma frame: 15 fps WebP kuchokera ku 60 fps MOV kumachepetsa 75% ya ma frame; kuchotsa ndi slider ya kuchuluka kwa ma frame. Chachiwiri, kuchepetsa kwa palette: GIF imathamanga mpaka ku 256 colors ndi gradient-heavy MOV dithers.

Ndio — njira yosintha kukula imachepetsa MOV pambuyo pochotsa ma frame, zomwe zimachepetsa kwambiri kukula kwa fayilo ya WebP. 480p WebP kuchokera ku 4K MOV ndi pafupifupi 16x yaying'ono kuposa 4K WebP.