WebM → Image

Guqula Eyakho WebM kuya Image amafayela kalula

Khetha amafayela akho

noma cindezela bese ususa amafayela akho lapha

I-Free Plan: 1 Ukushintsha/ihora · Iya ngaphandle komkhawulo →

Tshintsha amafayela mahhala, Pro abasebenzisi bangaguqula amafayela amakhulu kakhulu; Bhala manje

Ukulayisha

Indlela yokuguqula WebM kuya Image

Isinyathelo 1: Layisha eyakho WebM amafayela usebenzisa inkinobho engenhla noma ngokuhudula bese uphonsa.

Isinyathelo 2: Chofoza inkinobho ethi 'Guqula' ukuze uqale ukuguqulwa.

Isinyathelo 3: Landa i-version yakho Image amafayela

WebM kuya Image Imibuzo Evame Ukubuzwa Yokuguqulwa

Ngiyikhipha kanjani ifreyimu kusuka ku WebM ividiyo njenge Image izithombe?

Layisha phezulu i WebM futhi umguquli ubonisa isikhethi sefremu-sokuzisusa: yonke ifremu ye-Nth, amafremu ezikhathini ezikhethekile, noma ifremu eyodwa ngesekondi. Ifremu ngayinye ekhethiwe ikhodwe njengehele Image elilodwa futhi isethulo esigcwele siqoqwe kwi-ZIP archive yokulayisha. I-WebM iyingxenye eqinile ye-Matroska eshicilelwe yi-Google ngo-2010 ekhethekile ekubeni i-HTML5 ividiyo ifakwe ibhokisi elikhululekile. Isithombe lapha siyinjongo ejwayelekile: umguquli ukhetha ifomethi ye-raster efanele umsuka endaweni yokucindezela enye kuwe.

Ingabe izihloko ezingezansi zizovela kuma-Image amafreyimu engikhiphayo?

Akunakwenzeka uma beyi-subtitle track engokoqobo. WebM igcina izihloko ezingezansi njenge-stream yabo futhi umdlali uzobasusa phezu kwesithombe ngesikhathi sokudlala, ngakho ifremu eqoshiwe umguquli ubhala ngaphandle njenge-Image ine-pixels ehlanzekile ngaphansi. Izihloko ezingezansi eziboshwe kwividiyo ngaphambi kokuba ibe yi-WebM ziyinkinga ehlukile - lapho ziyingxenye yesithombe futhi ifremu ngayinye ekhishwayo igcina lezi.

Ingabe i-Image ixhasa ukubukhali?

Ifomethi ikhona, kodwa umsuka awuna-alpha ukuwunika - amafreyimu wevidiyo namakhasi ashicilelwe agcwele ukucasuka, ngakho wonke ama-pixel afika aqinile. Isixhumanisi se-alpha sisebenza ngemuva: kusho ukuthi ungasakaza isiqephu se Image ngemuva ngaphandle kokushintsha ifomethi futhi. Ukukhetha isiphetho ngokuzenzakalela kusho ukuthi uthola ifayela elivula noma kuphi ngaphandle kokucabanga ngamadivaysi angaphambili.

Ingabe amafayela Image azokhula kangako?

Okuningi kunalokho okubonayo, ngoba Image igcina wonke ama-pixel ngokugcwele kungafani nokulinganisela. I-1080p ihlala ifinyelela ku-2-5 MB futhi i-4K ihlala ifinyelela ku-6-15 MB, ngakho-ke ukukhishwa okude kusebenza ngokushesha. Lokhu kuyibhizinisi elilungile uma izithombe zidla ukukhiqizwa okuqhubekayo, futhi okubi uma zihamba ngqo kwikhasi le-web. Iphutha lemithombo yezithombe ku JPG, imithombo ekhanyayo noma eqinile iphutha ku PNG, nama-multi-page sources akhiqiza isithombe esisodwa ngakhasi.

Ngabe usinqumo sinjani uma ifreyimu ngayinye ekhishwayo Image iphuma?

Ukulungiswa okufanayo njenge WebM ividiyo — 1080p WebM ikhiqiza amafreyimu angama-1920×1080 Image; 4K WebM ikhiqiza amafreyimu angama-3840×2160 Image. Sebenzisa ukuguqula usayizi ngemuva kokukhipha uma ufuna amathumbnail amancane noma ama-social-media-size crops.

Ingabe ngizokhipha ifreyimu ngayinye esuka ku WebM njenge Image?

Yebo, kodwa qaphela ngokubalwa kwefayela — i-30fps 1-minithi WebM ikhiqiza amafreyimu angama-1,800 Image. Siwafaka ngokuzenzakalela ku-ZIP. Ku-clip ezide, "1 ngesekondi" (ifreyimu engu-60) noma ama-timestamps athile anikeza imiphumela elawulwayo.

Ingabe izithombe ezikhishwayo Image zizogcina umbala WebM olinganiselwe?

Yebo — umbala uqokwa nge-matrix esetshenziswa umsuka WebM (BT.709 ku-HD, BT.2020 ku-4K HDR). Umsuka we-HDR u-tone-map ku-SDR uma ukhishwa ku-Image ngoba amafomethi amaningi Image (PNG, JPG) angagcina ama-pixels we-HDR ahlukene ngokusemthethweni.

Yini ubukhulu behele lwesiphequluli esisodwa esikhishwayo Image?

Kuxhomekeka kusinqumo kanye ne Image codec. Ifreyimu ye-1080p PNG ivame ukuba 2 kuya ku-5 MB; i-1080p JPG esezingeni-85 ivame ukuba 200 kuya ku-500 KB; i-4K PNG ivame ukuba 6 kuya ku-15 MB. Kunzima kakhulu, ukukhishwa kwefreyimu ngayinye ye-PNG yemizuzu engu-10 1080p WebM kukhiqiza ~50 GB jikelele.

Ingabe i-Image ekhishwayo igcina i-EXIF camera metadata?

I WebM iqoqo aligcinanga i-EXIF nge-frame ngayinye ngendlela ikhamera ehlala isebenza ngayo, ngakho i Image amafayela aphuma nge-EXIF engenalutho. Sifaka `creation_time` indawo ekhombisa i-source frame timestamp ukuze uphinde uhlanganise i-bundle ngokulandelelana kokuthatha.

Ingabe ithatha isikhathi esingakanani ukukhishwa kwefremu kusuka ku WebM kuya ku Image?

Ukukhishwa kwefremu kushesha — 20 kuya ku-30% yomthombo wesikhathi sokuphila ku-standard pipeline. Iminithi engu-5 WebM → Image iqoqo liphelela ku-minithi eyodwa noma ngabe ifremu ibalwa, ngoba i-bottleneck yi Image encoder, hhayi WebM demuxer.

Ingabe ngizokhipha amafreyimu ezikhathini ezikhethekile ku WebM?

Yebo - ukhetho oluthuthukisiwe luthatha uhlu oluhlukaniswe nge-comma lwesikhathi (isibonelo `00:01:23,00:05:00,00:10:42`) futhi lukhiqiza ihele elinye Image ngesikhathi. Kuhle kuma-thumbnails wesigaba, ama-scene reference shots, noma ukuthumbnailing izifundo ezide.

Ingabe i-WebM yami yevidiyo ifihlakele ngesikhathi sokukhipha ifreyimu?

Yebo — imodeli yobumfihlo efanayo nezo zonke iziguqulo. Ividiyo yomthombo kanye nefreyimu ekhishwayo Image iphathwa abasebenza ngokuzimela futhi isuswa ngaphakathi kwemizuzu; akukho ukuhlolwa komuntu, akukho ukuqeqeshwa kwe-corpus, akukho ukungena kweqembu lesithathu.

WebM

I-WebM yenzelwe iwebhu, inikeza ukusakaza ividiyo ngaphandle kwemali yokukhokha ngama-codec e-VP8/VP9.

Image

Amafayela ezithombe, njenge-JPG, i-PNG, ne-GIF, agcina ulwazi olubonakalayo. Lawa mafayela angaqukatha izithombe, ihluzo, noma imifanekiso. Izithombe zisetshenziswa ezinhlelweni zokusebenza ezahlukahlukene, okuhlanganisa ukwakheka kwewebhu, imidiya yedijithali, kanye nemifanekiso yamadokhumenti, ukudlulisa okuqukethwe okubonakalayo.