Mai Juyawa AV1 zuwa Image

Maida Naka AV1 zuwa Image fayiloli da wahala

Zaɓi fayilolinku

*An goge fayiloli bayan awanni 24

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Ana lodawa

Yadda ake canzawa AV1 zuwa Image

Mataki na 1: Loda naka AV1 fayiloli ta amfani da maɓallin da ke sama ko ta hanyar ja da sauke su.

Mataki na 2: Danna maɓallin 'Maida' don fara hira.

Mataki na 3: Sauke fayil ɗin da aka canza Image fayiloli

AV1 zuwa Image Tambayoyin da ake yawan yi game da Canzawa

Ta yaya zan fitar da firam na daban daga AV1 kamar Image hotuna?

Ka shigar da fayil AV1 kuma mai maida zai nuna mai zaɓar fitar da firam: kowace firam ta Nth, firam a lokacin da aka ƙayyade, ko firam ɗaya a kowane sakan. An canza alamun shafi na kowace firam da aka zaɓa daga zubin bidiyo na AV1, an alamun shafi a matsayin fayil na daban na Image, kuma an haɗa shi a matsayin ZIP don saukewa. AV1 shi ne free-da-rai video codec da Alliance for Open Media ya fitar a cikin 2018 kamar yadda mai zuwa ga VP9. Image here is a general target: the converter chooses an appropriate raster format for the source rather than forcing one on you.

Shin za'a nuna sassaƙan rubutu cikin Image firam da na fitar?

Ba idan sun kasance wani irin wando na ƙarshe na gaskiya ba. AV1 na riƙe ƙarshen waƙa kamar yadda yake da shi kuma mai wasa yana kwafa su a kan hoton a lokacin wasa, don haka firam ɗin da aka canza shi wanda mai maida ke rubutawa kamar Image yana da pixels masu tsafta a ƙasansa. Ƙarshen waƙa da aka buga cikin bidiyo kafin ya zama AV1 wani abu ne daban — a wannan lokacin su ne ɓangaren hoton kuma duk firam ɗin da aka fitar yana riƙe su.

Shin fitarwa Image tana goyon bayan ɓoyayyiyar haske?

Wannan sifar tana da, amma mai samarwa ba shi da alfa don ya ba shi — firam ɗin bidiyo da shafuka masu nunawa suna da launi mai launi, don haka duk piksel na zuwa da ƙarfi. Shirin alfa yana da amfani a bayan haka: yana nufin zaka iya yanke wani abu daga Image bayan haka ba tare da canja sifar ba. Zaɓin manufar da aka ambata a baya yana nufin za ka samu fayil da za'a buɗe a duk inda kake ba tare da ka yi tunani game da codecs ba.

Mene ne girman fayilolin Image?

Mafi girma fiye da yadda kake tsammani, saboda Image yana riƙe duk pixel daidai ba tare da kusantar ba. 1080p na ci gaba da zama a kusa da 2-5 MB kuma 4K yana ci gaba da zama a kusa da 6-15 MB, don haka wani dogon tafiyar da fitarwa na ƙarawa cikin sauri. Wannan shi ne daidai lokacin da hotunan ke ci gaba da sarrafawa, kuma ba daidai ba lokacin da suke tafiya kai tsaye zuwa wani shafi na yanar gizo. JPG ne diff ɗin maɓuɓɓugar hotuna, PNG ne diff ɗin maɓuɓɓugar da ke da haske ko ƙanƙanta gefe, da kuma maɓuɓɓugar shafuka-da-da yawa suna samar da hoton ɗaya a kowace shafi.

A wane ma'aunin haske ne Image hotunan da aka fitar suke fitowa?

Ma'ana ɗaya da wurin asali AV1: 1080p AV1 na samar da firam 1920x1080 Image, 4K AV1 na samar da firam 3840x2160 Image. Mai musanya ba ya kara girma ko rage girman firam — ana cire girman piksel kai tsaye daga firam ɗin da aka canza girmansa. Yi amfani da /resize-image/ bayan fitarwa idan kana buƙatar hotunan ƙananan.

Shin zan iya fitar da kowace firam na AV1 kamar Image?

Na'am, amma ka lura da adadin fayil - 30 fps 1-dakika AV1 na samar da Image firam 1,800. Muna sanya su cikin wata ZIP ta atomatik. Ga bidiyo mai tsawo, ka fi son "1 a kowace sakan" da aka ƙayyade (60 firam a kowace minti) ko ka zaɓi wasu lokaci-da-saita. Wata sa'a ta AV1 a kowace-firam za ta samar da ~100,000 Image hotuna.

Shin firam Image za su kiyaye sakamako na launin AV1?

Na'am — an canza launi da ma'adinai guda da ma'adinan asali AV1 ke nunawa (BT.709 ga HD, BT.2020 ga 4K HDR). An yi ma'adinai na HDR da maɓallin-tone zuwa SDR lokacin da ake fitarwa zuwa Image wanda ba zai iya adana yankuna na piksel na HDR ba (JPG, PNG-8). Yi niyya ga PNG-16 ko TIFF mai girman bita idan kana buƙatar kiyaye yankuna masu sauya-sauya.

Mene ne girman firam Image da aka fitar a cikin diski?

Yana dogara da daidaitacce da kuma zaɓin Image codec: firam na 1080p PNG yana da 2-5 MB ba tare da asara ba, firam na 1080p JPG mai inganci 85 yana da 200-500 KB. Ka riƙa ƙidaya da ƙididdigar firam don girman ZIP — a mafi girma, duk fitarwa ta firam na PNG na minti 10 na 1080p AV1 yana da kusan 50 GB kuma yana samun rarrabawa a cikin ZIP masu yawa.

Shin an fitar da Image yana riƙe da metadata EXIF na kamara?

Wani AV1 mai riƙe da kayan aiki ba ya ɗaukar EXIF na kowane firam kamar yadda kamara mai tsayawa take yi, don haka fayilolin Image suna fitowa da kwalaye EXIF marasa amfani. Mai maida yana ƙunsa wani filin `creation_time` wanda ke nuna zuwa lokacin firam na asali, don haka zaka iya sake-sarrafa ƙuƙumma cikin tsari na lokaci ko kuma danganta da alamomin ƙarshen rubutu / babi.

Da yawa lokaci ake buƙata don fitar da firam daga AV1 zuwa Image?

An yi sauri wajen cire alamun shafi - a kan 20-30% na lokacin da ake amfani da shi. Ɗaya daga cikin AV1 -> Image na minti 5 zai ƙare cikin minti 1 ko da yaushe, ko da yaushe ka zaɓa, saboda matsalar ita ce mai alamun shafi Image yana rubuta fayiloli da yawa masu ƙaranci a cikin daidaito, ba mai alamun shafi AV1 ba.

Shin zan iya fitar da firam a cikin bidiyo AV1?

Na'am — zaɓin lokaci mai zurfi yana karɓar jerin da aka raba da koma (misali `00:01:23, 00:05:00, 00:10:42.5`) kuma yana samar da fayil Image guda a kowace lokacin da aka raba. Yana da amfani ga hotunan ƙananan fannoni, hotunan alaƙa da fuska, ko kuma gina takardar abokin hulɗa don duba.

Shin AV1 na na sirri ne yayin fitar da firam?

Na'am — irin wannan siffar sirri kamar duk canji. An yi aiki da tushen AV1 da kuma Image na bundle da aka fitar a cikin ma'aikata masu tsallakewa kuma an share su cikin mintina na kammalawa.

AV1

AV1 wani buɗaɗɗe ne, tsarin matsi na bidiyo mara sarauta wanda aka ƙera don ingantaccen yawo na bidiyo akan intanet. Yana bayar da ingantaccen matsawa ba tare da lalata ingancin gani ba.

Image

Fayilolin hotuna, kamar JPG, PNG, da GIF, suna adana bayanan gani. Waɗannan fayilolin na iya ƙunsar hotuna, zane-zane, ko zane-zane. Ana amfani da hotuna a cikin aikace-aikace iri-iri, gami da ƙirar yanar gizo, kafofin watsa labarai na dijital, da zane-zanen takardu, don isar da abubuwan gani.