WebM → GIF

Anyangwe iwe uchida kuisa vhidhiyo yako muvhidhiyo player, tsvaga nguva yacho uye nyora nguva yacho, nekuti WebM hazvina kumbobvira zvave nenyaya dzinoratidzwa. Peta vhidhiyo yako munguva yekutanga, wedzera nguva yacho, uye mushanduri uchatsvaga nguva yacho uye uchadecode nguva yacho. Kutsvaga nguva kunonyatsoenderana neframe, asi kunogona kunge kuri nyore sezvakataurwa — tarisa kuti ndeipi nguva yacho yaunoda kuti uone pakutanga. WebM isiri nyore kuisa chero kupi kunze kwebrowser – vanyori vemavhidhiyo, mafoni ane mavhidhiyo ekunze uye Smart TVs vanoisiya pachena.

Hapana vhidhiyo, chete kumirira. A WebM ndeimwe yeMatroska-family container, uye iyo family inoita kuti container ne codec ive zvakasiyana zvachose — izvo faira rine zvakagadziriswa payakanyorwa uye hazvisi zvakajeka nekuwedzera. Mugadziri anodecoder chero chinhu chinowanazve ku framework yakachena, uye iwo framework akafanana neako akaitwa ne codec. Kudecoder mutengo haufananidzi: matsva, anoshanda codecs anotora nguva yakawanda yekuunza kunze kupfuura ekare, saka maviri WebM mafaera ane imwe nguva inogona kutora nguva dzakasiyana kusvika kune imwe GIF. WebM inonzi yakaoma: VP8 kana VP9 video (AV1 yapfuura) ine Vorbis kana Opus audio, uye hapana chimwe.

Yeah, kana iwe uine faira. A WebM ndiyo iyo web inoshandisa kune inline video nekuti browsers inotamba pasina plugin, saka clip iri kutamba mutab inotora WebM iyo inochengeta uye inowedzera pano seimwe faira. Kunyangwe isiri iyo, mutambo wevhidhiyo unopa ma segments akanyorwa zvishoma kupfuura imwe faira - avo vanofanirwa kuunganidzwazve mushure mekunge chero chinhu chinogona kushandurwa. Rights ndeimwe yezvinhu zvinokosha kuongorora: kukwanisa kurodha pasi video hachisi chinhu chimwe chete nechinogona kuburitswazve animation yakagadzirwa kubva kwaro. WebM inotamba muwebhu browser yese yemazuva ano pasina plugin, pasina mari yechikwereti uye pasina patent exposure, izvo zvinoita kuti ive default yewebhu-yakaiswa video.

Hapana — GIF ndeimwe yemafaira emafaira, saka inotanga nguva iyo inodzokororwa uye haina kutamba, kusvikira kana kubvisa kudzora chero kupi. Iyi ndiyo hunhu hwemufananidzo kupfuura peji iro rinogara, uye ndiyo nei yekutanga frame iri kukosha zvakanyanya pano kupfuura mune video: vaverengi vakakumbira kuderera kwekufamba, uye vatengesi vemaemail vanopa imwe frame chete, vanoona iyo frame uye hapana chimwe. Choose a starting point whose opening frame reads sensibly on its own.

Animated GIF inoita zvakanaka kune mavhidhiyo akaderera pane 10 masekondi. Kunyangwe faira richibuda (GIF inowanzove neframe-per-frame isina kumanikidzwa). Kune zvinyorwa zvirefu, shandisa WebP kana APNG, izvo zvinoda kumanikidzwa kwevideo-codec-grade uye zvinowedzera zvakanyanya.

Animated GIF: 2 to 8 MB at 480p depending on motion complexity. Animated WebP: 200 KB to 1 MB at the same resolution / quality. Animated WebP is 5 to 10x more efficient than GIF for the same visual quality. GIF haina kukuvadza asi ine 256-mavara epalette paframe, ichishandisa LZW compression uye imwe-color binary transparency.

Nekuzvimisikidza tinodzikisa ku 15 fps kune akashongedzwa GIF (anosangana nematambudziko pamusoro pe 25 fps) uye 24 fps kune akashongedzwa WebP / APNG (ayo anosangana nemamiriro ezvinhu akakura). Kuchinja nekushandisa sarudzo yeframe-rate kana muoneri wako achitsigira iyo yekutanga.

Hapana — zvifananidzo zve GIF (GIF, WebP, APNG) hazvina kuchengeta mashoko. Kana uchida mashoko, shandisa video container (MP4, WebM) sezvaungaita nezvifananidzo zvemavhidhiyo.

Yeah - iyo loop-count sarudzo inodzora kana GIF ichiita loops pasina kumbobvira (default), inotamba N nguva, kana inotamba chete kamwe. Iyo loop count inochengetwa mu GIF container metadata uye inozivikanwa neese mamodheru ekuona.

Zvikonzero zviviri zvinozivikanwa. Pakutanga, kuderera kwefremu-rate: 15 fps GIF kubva ku60 fps WebM kunodzikira 75% yefremu; gadzirisa nefremu-rate slider. Pakupedzisira, kuwanda kwepalette: GIF inorambidzwa kune 256 mavara uye gradient-heavy WebM dithers zvakajeka. Tsvaga kune animated WebP yekuvimbika kwese kwese kwevara.

Yeah — resize-resize sarudzo inowedzera WebM pasi pamberi pekubvisa frame, izvo zvinowedzera kuderera kwe GIF faira saizi. A 480p GIF kubva ku4K WebM ndeye 16x yakaderera kupfuura 4K GIF. Usashandisa / video-cutter / kuchera mune imwe nhanho.