Sinthani AV1 ku TIFF

Sinthani Yanu AV1 ku TIFF mafayilo mosavuta

Sankhani mafayilo anu

*Mafayilo achotsedwa patatha maola 24

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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 ndingagwiritse ntchito ma frame kuchokera ku AV1 kanema ngati TIFF zithunzi?

Kutsitsa AV1 ndi wosintha amasonyeza chisankho cha frame-extraction: chilichonse cha Nth frame, ma frame panthawi yofunikira, kapena chiwonetsero chimodzi pasecond. Chosankha chilichonse chimayikidwa ngati fayilo ya TIFF ndipo zonse zimayikidwa mu archive ya ZIP yotsitsa. 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. A AV1 amasunga ma subtitle monga ma stream awo okha ndipo wosewera amawapanga pazithunzi nthawi yosewera, kotero decoded frame yomwe wosintha amalemba ngati TIFF 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 TIFF 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 TIFF 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 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 zosindikiza ndi zosunga zobwezeretsera.

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 bits pa channel, ndi masamba ambiri mu fayilo imodzi.

Kodi ndi pa chisankho chiyani chomwe chimatuluka pa TIFF chiwonetsero chosakira?

Kuwala kofanana ndi AV1 kanema - 1080p AV1 imapanga 1920 × 1080 TIFF ma frame; 4K AV1 imapanga 3840 × 2160 TIFF ma frame. Pezani ntchito yosintha kukula pambuyo pochotsa ngati mukufuna zithunzi zochepa kapena zokongoletsera zazing'ono.

Kodi ndingagwiritse ntchito chilichonse cha AV1 ngati TIFF?

Ndikofunika, koma onetsetsani kuti muwerenge fayilo - 30fps 1-mphindi AV1 imapanga 1,800 TIFF ma frame. Timawapaka m'ma ZIP mosasintha. Kwa ma clip ochepa, kusankha "1 pa mphindi" (ma frame 60) kapena ma timestamps okhudzana ndi nthawi imapatsa zotsatira zoyenera.

Kodi zithunzi zosakira TIFF zidzasunga kujambula kwa AV1?

Ndikoyenera - mtundu umasinthidwa ndi mamatrix omwe chiyambi AV1 chimagwiritsa ntchito (BT.709 kwa HD, BT.2020 kwa 4K HDR). Mafuta a HDR amasinthidwa ku SDR pochotsa ku TIFF chifukwa ambiri a TIFF amtundu (PNG, JPG) sangathe kusungira ma pixel a HDR mwanjira yosadziwika.

Kodi ndi kukula kwa fayilo ya TIFF ya frame?

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, kuchotsa PNG panthawi iliyonse ya 10-mphindi 1080p AV1 kumabweretsa ~ 50 GB pamodzi.

Kodi TIFF yosanduka imasunga metadata ya kamera ya EXIF?

AV1 yokhala ndi AV1 siyimasunga EXIF pa frame momwe kamera ikugwirira ntchito, choncho 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 ma frame 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'miphindi pafupifupi popanda malire a frame count, chifukwa bowa ndi TIFF encoder, osati AV1 demuxer.

Kodi ndingagwiritse ntchito ma frame pa nthawi yoyenera mu AV1?

Ndiyo — njira yophunzirira imavomereza mndandanda wa ma timestamps ogawidwa ndi koma (mwachitsanzo `00:01:23,00:05:00,00:10:42`) ndipo imapanga fayilo imodzi ya TIFF pa timestamp. Ndikothandiza kwa mathumbnails a bokosi, ma shots a scene reference, kapena mathumbnails a 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.