Sinthani AV1 ku JPG

Sinthani Yanu AV1 ku JPG mafayilo mosavuta

Sankhani mafayilo anu

*Mafayilo achotsedwa patatha maola 24

Sinthani mafayilo okwana 1 GB kwaulere, ogwiritsa ntchito Pro amatha kusintha mafayilo okwana 100 GB; Lowani tsopano

Kukweza

Momwe mungasinthire AV1 ku JPG

Gawo 1: Kwezani yanu AV1 mafayilo pogwiritsa ntchito batani lomwe lili pamwambapa kapena pokoka ndi kugwetsa.

Gawo 2: Dinani batani la 'Convert' kuti muyambe kusintha.

Gawo 3: Tsitsani pulogalamu yanu yosinthidwa JPG mafayilo

AV1 ku JPG Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingagwiritse ntchito ma frame amodzi kuchokera ku AV1 ngati JPG zithunzi?

Kutsitsa fayilo ya AV1 ndi wosinthira amatulutsa chisankho cha frame-extraction: chilichonse cha Nth frame, ma frame panthawi yofunikira, kapena chiwonetsero chimodzi pasecond.Katundu uliwonse wosankhidwa umasunthidwa kuchokera ku AV1 video stream, amasinthidwa kukhala fayilo ya JPG yosiyana, ndipo imaphatikizidwa ngati ZIP yotsitsa. AV1 ndi royalty-free video codec Alliance for Open Media anatulutsa mu 2018 monga wotsatira wa VP9. JPG ndi JPEG standard kuchokera 1992, ndipo pambuyo zaka zitatu ndibe format ambiri kamera ndi ambiri mawebusaiti kugwiritsa ntchito kwa zithunzi.

Kodi ma subtitle adzawonekera pa JPG ma frame omwe ndimatulutsa?

Sikuti ngati ndi mndandanda wa subtitle wachikhalidwe. A AV1 amasunga ma subtitle monga ma stream awo okha ndipo wosewera amawapanga pazithunzi nthawi yosewera, kotero decoded frame yomwe wosintha amalemba ngati JPG ili ndi pixels oyera pansi. Ma subtitle omwe adasungunuka mu kanemayo asanakhale AV1 ndi nkhani ina - pomwepo ndi gawo la chithunzicho ndipo chilichonse chopangidwa ndi frame chimasunga iwo.

Kodi ndingatenge imodzi mwa JPG kuchokera ku gawo lililonse la AV1?

Si monga batani limodzi, koma AV1 imapangitsa kuti zikhale zosavuta: masamba omarkidwa amasungidwa m'mabokosi monga nthawi yotchedwa, choncho werengani mndandanda wa masamba kuchokera pa fayilo ndi kuika nthawiyo m'malo a nthawi yolemba. Mumapeza JPG imodzi patsamba, m'njira, yomwe ndi njira yodziwika bwino yopanga mathumbnail kwa kujambula kotalika. Mafuta opanda masamba omarkidwa akukupangitsani kusankha mafilimu ndi maso. AV1 amabweretsa pafupifupi 30% yabwino kusamvana kuposa H.264 pa ubwino wofanana ndi kunyamula palibe ndalama latsopano, chifukwa chake YouTube ndi Netflix kunyamula izo.

Kodi ndiyenera kugwiritsa ntchito chiyani pakupanga kwa JPG?

Quality 85 ndi nzeru default ndi amene amagwiritsidwa ntchito ngati inu simungasinthe izo — visually sadzasiyana kuchokera ku zipangizo pa normal kuonera kumbuyo, pa pafupifupi 1/5 ya kukula kwa lossless equivalent. Push kuti 95 kwa chilichonse chimene chidzasinthidwa kapena kusindikizidwa, ndi kugwa kwa 70 kwa thumbnails kumene kukula domine. JPG ndi lossy: chithunzi chimasinthidwa ndi DCT, quantised, ndi entropy-coded, ndi quality knob kuwongolera momwe ambiri ndi kuthyola.

Kodi ndi yankho liti lomwe limatuluka JPG zithunzi zosadziwika?

Kuwala kofanana ndi choyamba AV1: 1080p AV1 kumabweretsa 1920x1080 JPG ma frame, 4K AV1 kumabweretsa 3840x2160 JPG ma frame. Wosinthayo sasintha kapena kuchepetsa - ma pixels amachokera pa frame yosinthidwa. Musanagwiritse ntchito /resize-image/ ngati mukufuna zithunzi zochepa.

Kodi ndingagwiritse ntchito chilichonse cha AV1 ngati JPG?

Ndino, koma ganizirani kuchuluka kwa fayilo - 30 fps 1-mphindi AV1 imapanga 1,800 JPG mafremu. Timawapaka m'chigawo chimodzi cha ZIP mwamsanga. Kwa mavidiyo ochepa, yesani "1 pa mphindi" (60 mafremu pa mphindi) kapena kusankha nthawi yoyenera. Ora la AV1 pa mafremu onse lidzapanga ~100,000 JPG zithunzi.

Kodi JPG ma frame adzasunga AV1 kujambula kwa mtundu?

Ndikoyenera - mtundu umasinthidwa ndi mapangidwe omwewo omwe amapezeka patsamba la AV1 (BT.709 kwa HD, BT.2020 kwa 4K HDR). Mafuta a HDR amasinthidwa ku SDR pamene akugwiritsidwa ntchito ku JPG omwe sangathe kusungira ma pixel a HDR mwanjira yachibadwa (JPG, PNG-8).

Kodi ndi chiyani chosapanga dzimbiri chosapanga dzimbiri JPG pa diski?

Kutengera pa resolution ndi JPG codec kusankhidwa: 1080p PNG frame ndi 2-5 MB yopanda kusowa, 1080p JPG pa 85 quality ndi 200-500 KB. Kuwonjezeka kwa mitengo ya frame kuti muchepetse ZIP - pamapeto pake, kutulutsa kwa PNG kwa 10-1080p AV1 kwa 10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-1

Kodi JPG yosakira imasunga metadata ya EXIF ya kamera?

AV1 chonyamula sichimangokhala ndi EXIF pa frame momwe kamera ikugwirira ntchito, kotero mafayilo a JPG amatuluka ndi ma blocks EXIF opanda pake. Wosintha amagwiritsa ntchito `creation_time` field yomwe imasonyeza nthawi yoyambira ya frame, kuti muthe kubwezeretsa bundle m'njira yoyenera kapena kugwirizana ndi masamba a subtitle / chapter.

Kodi nthawi yayitali bwanji kuti mutenge chiwonetsero cha AV1 mpaka JPG?

Kusintha kwa frame ndi kosavuta - nthawi zambiri 20-30% ya nthawi yochokera. 5-mphindi AV1 -> JPG bundle imatha m'miphindi 1 popanda kutengera kuti ndi mapazi angati omwe mumasankha, chifukwa chingwe ndi JPG encoder kulemba mafayilo ambiri ochepa mofanana, osati AV1 demuxer.

Kodi ndingagwiritse ntchito ma frame panthawi yoyenera m'mavidiyo a AV1?

Ndiyo — njira yowonjezera ya timestamp imavomereza mndandanda wogawidwa ndi koma (mwachitsanzo `00:01:23, 00:05:00, 00:10:42.5`) ndipo imapanga fayilo imodzi JPG pa timestamp. Ndikothandiza kwa thumbnails ya chapter, zithunzi zokhudzana ndi scene, kapena kulenga bokosi la mauthenga kuti lifufutidwe.

Kodi AV1 yanga ndi yapadera panthawi yochotsa bokosi?

Yesani - mtundu wofanana wa privacy monga pazosintha zonse. Choyamba AV1 ndi JPG chosakira chimachitidwa m'mabungwe osiyana ndi omwe amachotsa m'maola angapo a kumaliza.

AV1

AV1 ndi mawonekedwe otseguka, opanda malipiro a kanema opangidwa kuti aziyenda bwino pa intaneti. Amapereka mphamvu yopondereza kwambiri popanda kusokoneza mawonekedwe.