Kusintha AV1 ku TIFF

Sinthani Yanu AV1 ku TIFF mafayilo mosavuta

Sankhani mafayilo anu

*Mafayilo achotsedwa patatha maola 24

Kusintha owona ufulu, Pro ogwiritsa angakonzekere zambiri zochuluka owona; Kulembetsa Tsopano

Kukweza

Momwe mungasinthire AV1 ku TIFF

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 TIFF mafayilo

AV1 ku TIFF Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingapeze bwanji ma frame kuchokera ku AV1 kanema ngati TIFF zithunzi?

Kutsitsa kwa AV1 ndi wosintha amatulutsa chisankho cha frame-extraction: chilichonse cha Nth frame, ma frame a nthawi yoyenera, kapena chiwonetsero chimodzi pa mphindi. Chosankha chilichonse chimasinthidwa ngati fayilo ya TIFF ndipo zonse zimaphatikizidwa mu ZIP archive kuti mutsitsa. AV1 ndi royalty-free video codec Alliance for Open Media anatulutsa mu 2018 monga wotsatira wa VP9. TIFF ndi Tagged Image File Format kuchokera 1986, ndipo ndi mtundu wa skanning, kufalitsa ndi archiving makampani standardized pa.

Kodi ma subtitle adzawonekera pa TIFF ma frame omwe ndimatulutsa?

Sikuti ngati ndi mndandanda wa subtitle wachikhalidwe. AV1 amasunga subtitle ngati mtsinje wawo wapadera ndipo wosewera amawapanga pazithunzi nthawi yosewera, kotero chiwonetsero chosinthidwa chomwe wosintha amalemba ngati TIFF chili ndi ma pixels oyera pansi. Subtitles omwe adasungunuka mu kanemayo asanakhale AV1 ndi chinthu china - mpaka pamenepo ndi gawo la chithunzicho ndipo chilichonse chopangidwa chimasunga iwo.

Kodi ndingatenge TIFF imodzi 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. Mumapeza TIFF imodzi patsamba, m'njira, yomwe ndi njira yofala yopanga mathumbnail kwa kujambula kotalika. Mafuta osapanga masamba omarkidwa akukupangitsani kusankha zithunzi 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 TIFF imathandizira kuwala?

Format imagwira ntchito, koma chiyambicho sichimakhala ndi alpha kuti ipereke - ma frame a video ndi masamba opangidwa ndi mawonekedwe owoneka bwino, kotero kuti ma pixel onse amafika molimba. Chingwe cha alpha chimakhala chothandiza pambuyo pake: kumatanthauza kuti mutha kuchotsa chinthu kuchokera ku TIFF pambuyo pake popanda kusintha mtundu. TIFF imagwira ntchito ndi CMYK, 16-bit deepness, embedded ICC profiles ndi multi-page documents, zomwe ndi zomwe zimafunikira kusindikiza ndi kusungira ntchito.

Kodi ndi chiyani chofunikira pa TIFF mafayilo?

Kukula kwakukulu kuposa momwe mungayembekezere, chifukwa TIFF imasunga ma pixel onse moyenera kuposa kuyerekezera. 1080p imakhalabe pafupi ndi 2-5 MB ndipo 4K imakhalabe pafupi ndi 6-15 MB, kotero kutulutsa kwanthawi yayitali kumawonjezera mwachangu. Izi ndi malonda abwino pamene zithunzi zimatha kutulutsa kuwongolera, ndipo zoyipa pamene zikuyenda mozungulira patsamba la webusaiti. TIFF ndi chonyamula zambiri kuposa codec: likhoza kunyamula uncompressed, LZW, ZIP kapena ngakhale JPEG deta, pa mpaka 32 mabit pa channel, ndi masamba ambiri mu fayilo imodzi.

Kodi ndi yankho liti lomwe limatuluka pa TIFF ya frame yomwe imatulutsidwa?

Kusintha kwachidziwitso chofanana ndi AV1 kanema - 1080p AV1 imapanga 1920 × 1080 TIFF mafayilo; 4K AV1 imapanga 3840 × 2160 TIFF mafayilo. Pezani ntchito yosintha kukula pambuyo potulutsa ngati mukufuna mathumbnail ochepa kapena masamba amtundu wa media media.

Kodi ndingagwiritse ntchito chilichonse chamatabwa kuchokera ku AV1 ngati TIFF?

Ndikuvomereza, koma onetsetsani kuti muwerenge fayilo - 30fps 1-mphindi AV1 imapanga 1,800 TIFF ma frame. Timawapaka m'manja mwa ZIP mwamsanga. Kwa ma clip ochepa, "1 pa mphindi" (60 ma frame) kapena nthawi yoyenera imapatsa zotsatira zoyenera.

Kodi zithunzi zosakira TIFF zidzasunga AV1 kujambula kwa mtundu?

Ndikoyenera - mtundu umasinthidwa ndi mamatrix omwe amagwiritsa ntchito AV1 (BT.709 kwa HD, BT.2020 kwa 4K HDR). Ma HDR amapangidwa ndi SDR pazotulutsa ku TIFF chifukwa cha TIFF zosiyanasiyana (PNG, JPG) sizingatheke kusungira ma pixels a HDR.

Kodi ndi chiyani kukula kwa fayilo ya chiwonetsero cha TIFF chosatsegulidwa?

Kutengera pa resolution ndi TIFF codec. 1080p PNG frame ndi 2 mpaka 5 MB; 1080p JPG pa quality-85 ndi 200 mpaka 500 KB; 4K PNG ndi 6 mpaka 15 MB. Pamapeto pake, kutulutsa kwa PNG kwa 10-minute 1080p AV1 kumapanga ~ 50 GB pamodzi.

Kodi TIFF yosanduka imasunga metadata ya kamera ya EXIF?

Kuyika kwa AV1 sikungasungire EXIF pa frame momwe kamera ikugwira ntchito, kotero mafayilo a TIFF amatuluka ndi EXIF yopanda pake. Timayika `creation_time` yokhala ndi nthawi yoyambira ya frame kuti muthe kubwezeretsa bundle ndi kujambula.

Kodi nthawi yayitali bwanji kuti mutenge chiwonetsero chazithunzi kuchokera ku AV1 kupita ku TIFF?

Kutulutsa kwa frame ndi kosavuta - nthawi zambiri 20 mpaka 30% ya nthawi yoyambira pa standard pipeline. 5-mphindi AV1 → TIFF bundle imatha m'maola pafupifupi mphindi imodzi popanda kusiyana ndi kusiyana kwa frame, chifukwa choletsa ndi TIFF encoder, si AV1 demuxer.

Kodi ndingagwiritse ntchito ma frame pa nthawi yoyenera mu AV1?

Ndiyo — njira yophunzirira imavomereza mndandanda wa timestamps osiyana ndi koma (mwachitsanzo `00:01:23,00:05:00,00:10:42`) ndipo imapanga fayilo imodzi TIFF pa timestamp. Ndi zothandiza kwa thumbnails za chapter, scene reference shots, kapena thumbnailing ya maphunziro ochepa.

AV1

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

TIFF

Mafayilo a TIFF amathandizira kuzama kwa ma bit ambiri komanso kupsinjika kosataya, komwe ndi koyenera kujambula zithunzi ndi kusindikiza mwaukadaulo.