Ib qho tseem ceeb uas koj yuav tsum paub yog "Txoj Cai Rate" los kawm cov txheej txheem ntawm kev tsim cov yeeb yaj kiab.Ua ntej tham txog tus ncej tus nqi, peb yuav tsum xub nkag siab lub hauv paus ntsiab lus ntawm animation (video) kev nthuav qhia.Cov yeeb yaj kiab peb saib yog tsim los ntawm cov duab tseem ceeb.Txij li qhov sib txawv ntawm txhua daim duab tseem me me, thaum cov duab saib ntawm qhov nrawm, cov duab nrawm nrawm tseem muab cov tsos ntawm tib neeg lub qhov muag lub retina uas ua rau cov yeeb yaj kiab peb saib.Thiab txhua daim duab no hu ua "thav duab."
"Frame Ib Thib Ob" lossis qhov hu ua "fps" txhais tau tias muaj pes tsawg tus duab tseem nyob hauv ib-thib ob video.Piv txwv li, 60fps txhais tau tias nws muaj 60 ntas ntawm cov duab tseem nyob ib ob.Raws li kev tshawb fawb, tib neeg qhov muag pom kev tuaj yeem ua tiav 10 mus rau 12 cov duab tseem ceeb ib ob, thaum ntau cov thav duab ib ob yog pom tau tias yog cov lus tsa suab.Thaum tus ncej tus nqi siab dua 60fps, nws yog ib qho nyuaj rau tib neeg lub qhov muag kom pom qhov sib txawv me ntsis hauv daim duab.Niaj hnub no, feem ntau cov yeeb yaj kiab tsim siv 24fps.
NTSC System thiab PAL System yog dab tsi?
Thaum TV los txog rau lub ntiaj teb no, lub TV kuj hloov cov video ncej npaum li cas.Txij li thaum lub monitor nthuav tawm cov duab los ntawm teeb pom kev zoo, tus ncej tus nqi ib ob yog txhais los ntawm pes tsawg cov duab tuaj yeem luam tawm hauv ib ob.Muaj ob txoj hauv kev ntawm cov duab scanning- "Progressive Scanning" thiab "Interlaced Scanning."
Progressive scanning kuj tseem hu ua noninterlaced scanning, thiab nws yog ib hom kev nthuav qhia nyob rau hauv uas tag nrho cov kab ntawm txhua tus ncej yog kos nyob rau hauv ib theem zuj zus.Daim ntawv thov ntawm interlaced scanning yog vim muaj kev txwv ntawm lub teeb liab bandwidth.Cov yees duab interlaced siv cov tsoos analog TV systems.Nws yuav tsum luam theej duab cov lej khib ntawm daim duab teb ua ntej thiab tom qab ntawd mus rau cov kab sib npaug ntawm daim duab teb.Los ntawm kev hloov sai sai ntawm ob "ib nrab-thav duab" cov duab ua rau nws zoo li cov duab tiav.
Raws li kev tshawb xav saum toj no, "p" txhais tau tias Kev Tshawb Fawb Txog Kev Tshawb Fawb, thiab "i" sawv cev rau Kev Tshawb Fawb Kev Tshawb Fawb.Lub "1080p 30" txhais tau tias Full HD daws teeb meem (1920 × 1080), uas yog tsim los ntawm 30 "tag nrho thav duab" nce qib scan ib ob.Thiab "1080i 60" txhais tau tias Full HD duab yog tsim los ntawm 60 "ib nrab-thav duab" interlaced scan ib ob.
Txhawm rau kom tsis txhob muaj kev cuam tshuam thiab suab nrov tsim los ntawm cov teeb liab tam sim no thiab TV ntawm ntau zaus, National Television System Committee (NTSC) hauv Tebchaws Meskas tau tsim qhov sib cuam tshuam scanning zaus yog 60Hz, uas yog tib yam li qhov hloov pauv tam sim no (AC) zaus.Qhov no yog li cas 30fps thiab 60fps ncej tus nqi raug tsim.NTSC system siv rau teb chaws USA thiab Canada, Nyiv, Kauslim Teb, Philippines, thiab Taiwan.
Yog tias koj ceev faj, koj puas tau pom qee cov khoom siv yees duab nco 29.97 thiab 59.94 fps ntawm cov specs?Cov lej khib yog vim thaum cov xim TV tau tsim, xim teeb liab tau ntxiv rau cov teeb liab video.Txawm li cas los xij, qhov zaus ntawm cov teeb liab xim sib tshooj nrog lub suab teeb liab.Txhawm rau tiv thaiv kev cuam tshuam ntawm cov teeb liab video thiab suab, American engineers qis 0.1% ntawm 30fps.Yog li, xim TV ncej tus nqi tau hloov kho los ntawm 30fps rau 29.97fps, thiab 60fps tau hloov kho rau 59.94fps.
Piv rau NTSC system, German TV chaw tsim tshuaj paus Telefunken tau tsim PAL system.PAL system txais 25fps thiab 50fps vim tias AC zaus yog 50 Hertz (Hz).Thiab ntau lub tebchaws nyob sab Europe (tshwj tsis yog Fabkis), lub tebchaws Middle East, thiab Tuam Tshoj siv PAL system.
Niaj hnub no, kev tshaj tawm kev lag luam siv 25fps (PAL system) thiab 30fps (NTSC system) raws li tus ncej tus nqi rau kev tsim video.Txij li qhov zaus ntawm AC fais fab sib txawv los ntawm cheeb tsam thiab lub teb chaws, yog li nco ntsoov teeb tsa txoj cai sib raug zoo ua ntej tua cov yeeb yaj kiab.Tua cov yeeb yaj kiab nrog lub kaw lus tsis raug, piv txwv li, yog tias koj tua cov yees duab nrog PAL system ncej tus nqi hauv North America, koj yuav pom tias cov duab flicking.
Shutter thiab Frame Rate
Tus ncej tus nqi yog heev txuam nrog lub shutter ceev.Qhov "Shutter Ceev" yuav tsum yog ob npaug ntawm Ncej Rate, ua rau pom qhov pom zoo tshaj plaws rau tib neeg lub qhov muag.Piv txwv li, thaum cov vis dis aus siv 30fps, nws qhia tias lub koob yees duab shutter ceev yog teem rau 1/60 vib nas this.Yog tias lub koob yees duab tuaj yeem tua ntawm 60fps, qhov ceev ntawm lub koob yees duab yuav tsum yog 1/125 thib ob.
Thaum lub shutter ceev qeeb dhau rau tus ncej tus nqi, piv txwv li, yog tias lub shutter ceev yog teem rau 1/10 thib ob los tua 30fps video, tus saib yuav pom qhov muag plooj txav hauv cov yees duab.Ntawm qhov tsis sib xws, yog tias lub shutter ceev yog siab dhau mus rau tus ncej tus nqi, piv txwv li, yog tias lub shutter ceev tau teem rau 1/120 thib ob rau kev yees duab 30fps, qhov kev txav ntawm cov khoom yuav zoo li cov neeg hlau zoo li yog tias lawv tau kaw cia. tsab ntawv tsa suab.
Yuav Siv Tus Txheej Txheem Zoo Li Cas
Tus ncej tus nqi ntawm ib daim vis dis aus cuam tshuam li cas cov duab zoo li, uas txiav txim siab seb qhov yees duab zoo li cas.Yog hais tias cov ntaub ntawv tsim tawm cov yeeb yaj kiab yog cov ntsiab lus zoo li qub, xws li kev sib tham, kev kaw lus qhuab qhia, thiab kev sib tham video, nws yog ntau tshaj li qhov txaus los tua cov yeeb yaj kiab nrog 30fps.30fps video nthuav tawm cov lus tsa suab zoo li tib neeg pom kev.
Yog tias koj xav kom cov vis dis aus muaj cov duab meej thaum ua si hauv cov suab qeeb, koj tuaj yeem tua cov yees duab nrog 60fps.Ntau tus kws tshaj lij videographers siv tus ncej siab los tua cov yeeb yaj kiab thiab siv qis fps hauv kev tsim khoom tom qab tsim cov yeeb yaj kiab qeeb.Daim ntawv thov saum toj no yog ib txoj hauv kev los tsim kom muaj qhov chaw zoo nkauj romantic los ntawm kev yees duab qeeb.
Yog tias koj xav kom khov cov khoom hauv cov lus tsa suab nrawm, koj yuav tsum tua cov vis dis aus nrog 120fps.Siv cov yeeb yaj kiab "Billy Lynn nyob nruab nrab" piv txwv.Cov yeeb yaj kiab tau ua los ntawm 4K 120fps.Cov yeeb yaj kiab siab daws teeb meem tuaj yeem nthuav tawm cov ntsiab lus ntawm cov duab, xws li cov plua plav thiab tawg ntawm cov khib nyiab hauv cov phom, thiab cov foob pob hluav taws, ua rau cov neeg tuaj saib pom kev pom zoo li lawv tus kheej ntawm qhov chaw.
Thaum kawg, peb xav kom cov neeg nyeem yuav tsum siv tib tus ncej tus nqi los tua cov yeeb yaj kiab hauv tib qhov project.Pab pawg kws tshaj lij yuav tsum kuaj xyuas tias txhua lub koob yees duab siv tib tus ncej tus nqi thaum ua haujlwm EFP.Yog tias Lub Koob Yees Duab A siv 30fps, tab sis Lub Koob Yees Duab B siv 60fps, ces cov neeg tuaj saib ntse yuav pom tias cov yeeb yaj kiab tsis zoo ib yam.
Post lub sij hawm: Apr-22-2022