ProRes ndi ukadaulo wa codec wopangidwa ndi Apple mu 2007 kwa pulogalamu yawo ya Final Dulani ovomereza.Poyamba, ProRes inalipo pamakompyuta a Mac okha.Pamodzi ndi chithandizo chokulirapo ndi makamera amakanema ambiri ndi zojambulira, Apple idatulutsa mapulagi a ProRes a Adobe Premiere Pro, After Effects, ndi Media Encoder, kulola ogwiritsa ntchito Microsoft kusintha makanema mumtundu wa ProRes nawonso.
Ubwino wogwiritsa ntchito Apple ProRes codec popanga pambuyo ndi:
Kuchepetsa ntchito zamakompyuta, chifukwa cha kukanika kwa zithunzi
ProRes imakanikiza pang'ono chimango chilichonse cha kanema wojambulidwa, kuchepetsa deta yamavidiyo.Komanso, kompyuta amatha pokonza kanema deta mwamsanga pa decompression ndi kusintha.
Zithunzi zapamwamba
ProRes imagwiritsa ntchito encoding ya 10-bit kuti ipeze chidziwitso chamtundu wabwinoko ndi kupsinjika koyenera.ProRes imathandizanso kusewera makanema apamwamba mumitundu yosiyanasiyana.
Zotsatirazi zikuwonetsa mitundu yosiyanasiyana ya mawonekedwe a Apple ProRes.Kuti mudziwe zambiri za "kuzama kwamitundu" ndi "sampling ya chroma", chonde onani nkhani zathu zam'mbuyomu-8-bit, 10-bit, 12-bit, 4:4:4, 4:2:2 ndi 4:2:0 ndi chiyani?
Apple ProRes 4444 XQ: Mtundu wapamwamba kwambiri wa ProRes umathandizira magwero a zithunzi za 4:4:4:4 (kuphatikiza ma alpha channels) okhala ndi chiwongola dzanja chambiri kuti asunge tsatanetsatane wazithunzi zapamwamba kwambiri zopangidwa ndi digito yapamwamba kwambiri yamakono. masensa zithunzi.Apple ProRes 4444 XQ imasunga magawo osinthika kangapo kuposa mawonekedwe a Rec.709 - ngakhale motsutsana ndi zovuta zakusintha kowoneka bwino, momwe zakuda kapena zowoneka bwino zimatambasulidwa kwambiri.Monga muyezo wa Apple ProRes 4444, codec iyi imathandizira mpaka 12 bits pa chithunzi chilichonse ndi ma bits 16 a alpha channel.Apple ProRes 4444 XQ imakhala ndi chiwongolero chandandanda cha data pafupifupi 500 Mbps kwa 4:4:4 magwero pa 1920 x 1080 ndi 29.97 fps.
Apple ProRes 4444: Mtundu wapamwamba kwambiri wa ProRes wa 4: 4: 4: magwero a zithunzi za 4 (kuphatikiza njira za alpha).Kodeki iyi imakhala ndi kutsimikizika kwathunthu, luso laukadaulo 4:4:4:4 mtundu wa RGBA ndi kukhulupirika kowoneka bwino komwe sikungathe kuzindikirika ndi zinthu zoyambirira.Apple ProRes 4444 ndi njira yabwino kwambiri yosungira ndikusinthana zithunzi zoyenda ndi zophatikizika, zogwira ntchito bwino komanso masamu osatayika a alpha njira mpaka 16 bits.Codec iyi imakhala ndi chiwerengero chochepa kwambiri cha deta poyerekeza ndi 4: 4: 4 HD yosakanizidwa, ndi chiwerengero chandandanda cha data pafupifupi 330 Mbps pa 4: 4: 4 magwero pa 1920 x 1080 ndi 29.97 fps.Imaperekanso ma encoding achindunji ndi ma decoding amitundu yonse ya RGB ndi Y'CBCR.
Apple ProRes 422 HQ: Mtundu wapamwamba wa data wa Apple ProRes 422 womwe umasunga mawonekedwe owoneka bwino pamlingo wofanana ndi Apple ProRes 4444, koma pazithunzi za 4: 2: 2.Ndi kukhazikitsidwa kwachulukidwe pamakampani opanga mavidiyo, Apple ProRes 422 HQ imapereka chitetezo chowoneka bwino cha akatswiri apamwamba kwambiri HD kanema yemwe ulalo umodzi HD-SDI siginecha imatha kunyamula.Kodeki iyi imathandizira makulidwe athunthu, 4:2:2 makanema akuzama ma pixel a 10-bit pomwe akukhalabe osatayika kupyola mibadwo yambiri yojambula ndi kuyikanso.Apple ProRes 422 HQ's target data rate ndi pafupifupi 220 Mbps pa 1920 x 1080 ndi 29.97 fps.
Apple ProRes 422: Codec yapamwamba kwambiri yomwe imapereka pafupifupi mapindu onse a Apple ProRes 422 HQ, koma pa 66 peresenti ya chiwerengero cha deta pakuchita bwino kwambiri komanso nthawi yeniyeni yosintha.Apple ProRes 422's chandamale chandamale ndi pafupifupi 147 Mbps pa 1920 x 1080 ndi 29.97 fps.
Apple ProRes 422 LT: Codec yoponderezedwa kwambiri kuposa
Apple ProRes 422, pafupifupi 70 peresenti ya kuchuluka kwa data ndi
30 peresenti ya mafayilo ang'onoang'ono.Codec iyi ndi yabwino kwa malo omwe mphamvu zosungirako komanso kuchuluka kwa deta ndizofunikira kwambiri.Apple ProRes 422 LT's target data rate ndi pafupifupi 102 Mbps pa 1920 x 1080 ndi 29.97 fps.
Apple ProRes 422 Proxy: Codec yoponderezedwa kwambiri kuposa Apple ProRes 422 LT, yomwe idapangidwira kuti igwiritsidwe ntchito pamayendedwe apaintaneti omwe amafunikira mitengo yotsika ya data koma kanema wa Full HD.Apple ProRes 422 Chandamale chandalama ya data ndi pafupifupi 45 Mbps pa 1920 x 1080 ndi 29.97 fps.
Tchati chomwe chili pansipa chikuwonetsa momwe kuchuluka kwa data ya Apple ProRes kufananizira ndi kusamvana kwa Full HD kosasunthika (1920 x 1080) 4:4:4 12-bit ndi 4:2:2 10-bit kutsatizana kwazithunzi pa 29.97 fps.Malinga ndi tchatichi, ngakhale kutengera mawonekedwe apamwamba kwambiri a ProRes- Apple ProRes 4444 XQ ndi Apple ProRes 4444, imapereka kugwiritsa ntchito kwa data kotsika kwambiri kuposa zithunzi zosakanizidwa.
Nthawi yotumiza: Apr-22-2022