Nws yog lub sij hawm los txhim kho tias cov zaub ntsuab greenscreen hauv tsab xov xwm!
Hauv ib feem ntawm cov koob no peb tau pom ib co kev qhia rau kev teeb tsa thiab tuav cov zaub ntsuab greenscreen rau lub ntsiab ntawm qhov tseem ceeb thiab kev sib txuas, lossis tshem tawm thiab hloov qhov tom qab rau peb qhov kev sib tw tshiab ua ntej.
Yuav ua kom tiav txoj cai ntawm kev sib txuas lus peb yuav siv Adobe After Effects, thiab hauv particular, ib qho tseem ceeb hu ua "Keylight". Nws tau tsim los ntawm The Foundry, thiab cov nkoj raws li kev txuam nrog cov teebmeem tom qab.
Nws yog ib qho cuab yeej uas muaj hwj chim, thiab, thaum peb feem coob yuav muaj peb lub tswv yim thiab cov tswv yim, ntawm no yog ob peb yam peb nyiam kev cov tswv yim.
Nws yuav tsum raug sau tseg tias muaj ntau qhov kev xaiv tseem ceeb ntawm qhov no, nrog rau cov cuab yeej muaj zog hauv Premiere, HitFilm thiab lwm yam kev siv, tab sis qhov no yog ib txoj hauv kev zoo rau kev tso tawm qee lub ntsiab ntawm cov keying.
Yuav pib, cia tus kheej teeb tsa kom zoo. Pib ntawm qhov kev qhia no yog ua thawj kauj ruam nrog cov nyhuv keying: siv cov nyhuv rau cov duab, thiab xaiv qhov xim xim nrog xim xim picker. Qhov no yog ib qho ntawm cov kev xaiv thawj zaug nyob rau hauv cov nyhuv vaj huam sib luag rau Keylight, thiab xim uas xav tau xaiv yog keeb kwm ntsuab.
Cia li xaiv ntsuab tom qab nrog Keylight lub xim picker (los yog "xim" picker, raws li UK lub tuam txhab Foundry sau nws) yuav ua ib nrab ntawm txoj hauj lwm. Cov tom qab yuav tsum yog feem ntau pob tshab tam sim no, tab sis nws muaj ntau peb ua tau.
Keyring qhov chaw - ntawm ntau qhov chaw nyob hauv Keylight peb mam li saib ob peb:
1) Screen Pre-blur : qhov chaw no kho ntau npaum li cas tuaj yeem siv rau lub matte ua ntej lub ntsiab tseem ceeb. Qhov no yog muab rau kev tshem tej yam txawv txav ntawm cov duab ntxoo. Tom qab xaiv qhov tshuaj ntsuam xim, qhov no feem ntau yog thawj qhov chaw mus.
2) Screen Matte saib: los ntawm kev ua hauj lwm nyob rau hauv no saib kom kho cov duab matte, nws yog yooj yim mus saib dab tsi peb matte yog saib zoo li. Muaj tsis muaj dab tsi phem dua li muaj duab ntxoov ntxoo los ntawm ib tug tsis-lig-ploj kev tshuaj ntsuam. Kho Clip Dub thiab Clip Dawb kom txog thaum lub ntsiab lus yog dawb thiab qhov chaw hauv cheeb tsam yog dub. Yog tias muaj kab nyob ib ncig ntawm ntug kev, xav kom yoojyim rov qab qhov screen nrog Screen Shrink. Pib nrog -0.5 thiab ua hauj lwm los ntawm muaj. Rov qab mus rau Tshaj Tawm los sis Cov Kawg Ua Tau Zoo Tshaj Plaws.
Muaj ntau ntau qhov chaw, tab sis cov no yuav tau txais koj pib.
Dab tsi ntxiv peb tuaj yeem txhim kho peb qhov tseem ceeb tom qab Teebmeem?
Siv Cov Khoom Siv Khib Nyiab - nyob rau hauv txhua qhov teeb meem tseem ceeb, nws yog kev xyaum zoo los tsim lub khwb ntsej muag, uas yog ib lub npog uas nyob ib ncig ntawm qhov yuav raug tshem tawm ntau dhau keeb kwm ntau tshaj li qhov ua tau. Qhov no tshem tawm cov npoo npog, thiab feem ntau txuag cov keyed lub dag zog uas yuav tsum tau ua kom tiav qhov kev tshuaj ntsuam tag nrho.
Siv Qhov Ncauj Lom Zem Los Kho Kho Daws Teeb - thaum Taws Qhov Teeb Tseem Ceeb tau siv thiab teem rau hauv seem xav tau keyed, duplicate tom qab. Nyob rau hauv qab txheej, tshem tawm cov Keylight siv. Nyob rau hauv qab txheej, teem caij lem matte mus "Alpha Matte" siv cov txheej saum toj kawg nkaus raws li txoj kev ua tiav. Uas yuav siv cov duab uas tsim los ntawm Keylight, tab sis cov duab tsis huv uas tsis yog keyed yog dab tsi yog pom li qhov kawg tshwm sim. Ua ntej ua ke ntawm ob txheej pov tseg ces lawv tuaj yeem cuam tshuam nrog ua ib txheej.
Ua haujlwm ntxiv nyob rau hauv txheej ua ntej yuav siv tej yam xws li matte choker los ntxuav cov npoo, txaug suppressor kom tshem tawm cov kev tua kab ntsuab, los yog siv hawj / saturation rau desaturate ntsuab cheeb tsam ntawm daim duab.
Hauv ib feem peb ntawm no series peb mam li saib cov xim kho me ntsis thiab lwm yam kev hloov uas tuaj yeem ua duab zoo nkauj dua.