MOV → GIF

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 GIF 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.

Sichoncho — GIF ndi fayilo ya chithunzi, choncho imayamba nthawi yomwe imatha kusinthidwa ndipo siyimakhala ndi kusewera, kuletsa kapena kuwongolera komweko. Izi ndi za mtundu wa fayilo kuposa tsamba lomwe limasungidwa, ndipo ndichifukwa chake chithunzi chachiwiri chimafunika kwambiri pankhaniyi kuposa momwe chimakhalira pavidiyo: owerenga omwe akufuna kuchepetsa kuyendetsa, ndi maimelo omwe amatumiza mauthenga omwe amasonyeza chithunzi chimodzi, amaona chithunzichi ndi chilichonse. Sankhani malo oyamba omwe chithunzi choyamba chimawerenga moyenera pamodzi.

Animated GIF 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. GIF ndi lossless koma ndi 256-color palette pa frame, pogwiritsa ntchito LZW kusamvana ndi imodzi-kolo binary kuwala.

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 GIF (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 GIF imayenda mopanda malire (default), imasewera nthawi N, kapena imasewera nthawi imodzi. Kuwerengera kwa loop kusungidwira mu metadata ya GIF yonyamula ndipo imalemekeza aliyense woonera wamakono.

Zifukwa ziwiri zofala. Choyamba, kuchepetsa kuchuluka kwa ma frame: 15 fps GIF 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 GIF. 480p GIF kuchokera ku 4K MOV ndi pafupifupi 16x yaying'ono kuposa 4K GIF.