HIU NG CHROMA KEYHiu ng Chroma Key c tc dng tch nh nn ca mt
clip. Bn c th dng hiu ng ny i hnh nn, hnh nn c phi tun th mt nguyn
tc l mu nn phi l mu ng nht. Bi v, khi y mu nn b i s sch ht. hiu ng
Chroma Key l mt hiu ng quan trng ca Adobe Premiere Pro. Trong bi tp
ny, cc bn s c hng dn cch p dng hiu ng Chroma Key tch nh nn ca mt
clip, sau ghp i tng cn li vo mt nh nn khc nh hnh di. - M hp thoi
Effects bng cch chn Window Effects. - Hp thoi Effects xut hin vi
nhiu mc, y chn mc Video Effects. - Nhp vo biu tng tam gic bn tri th
mc Video Effects, mt danh sch x xung vi nhiu mc trong c nhm hiu ng
Keying. Nhp tip biu tng tam gic trong mc Keying, danh sch x xung vi
nhiu hiu ng khc nhau, trong c hiu ng Chroma Key. - p dng hiu ng
Chroma Key vo Clip JO81.JPG bng cch: Trong ca s Effects, nhp chn
hiu ng Chroma Key v ko r t clip JO81.JPG trong rnh Video 2 trn ca s
Timeline. - Sau , m hp thoi Effect Controls bng cch chn Window
Effect Controls. - Hp thoi Effects Controls xut hin vi nhiu mc hiu
chnh. Trong c mc chnh hiu ng Chroma Key. Nhp tam gic trong mc
Chroma Key, mt danh sch hiu chnh x xung. Color: Chn mu nn - chn mu
chnh xc vi nn dng cng c ly mu ( biu tng ). - Nhp chn cng c ly mu ri
ko r vo hnh nn, sau nhp vo v tr hnh nn. mu nn ti v tr nhp chut s l
mu b b i. - chn nhanh mu nn, c th nhp vo mu trng k cn biu tng ng
ht. - Khi y, hp thoi Color Picker hin ra, chn mu ging mu nn ca hnh,
nhp cc thng s nh sau: R: 154; G:182; B:212. Chn xong nhp OK.
Similarity: Mc loi b hnh nn, chn gi tr thch hp cho mc ny th hnh nh
s p hn. Blend: Chnh m ton khung hnh. Hnh bn l v d: Threshold v
Cutoff l hai mc chnh sng ti, trong cng c chnh mc thay i hnh nn.
chng ta c th nhp gi tr trc tip vo-
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thng s ca tng mc hoc chnh bng thc o. iu chnh bng cch ko con trt
trn thanh thc o. Mc Smothing l mn ca ng vin ( ng gip ranh gia hnh
nh v nn). mc ny c ba la chn, nn chn High. Mc Mask Only: Khi nh du
kim vo mc ny th nh s chuyn sang mu trng.
HIU NG BEVEL EDGESHiu ng Bevel Edges cng rt p vi nhiu cch hiu
chnh. t bit vi ni ca nn hnh gy cho ta cm gic dng hnh 3D. - Nhp nt
tam gic trong mc Video Effects, mt danh sch x xung vi nhiu mc trong
c mc Perspective vi hiu ng Bevel Edges. - Nhp nt tam gic trong mc
Perspective mt danh sch hiu ng x xung. trong c hiu ng Bevel Edges.
- Hp thoi Effect Controls xut hin vi nhiu mc iu chnh trong c mc iu
chnh hiu ng Bevel Edges. - u tin ta tm hiu v mc Edge Thickness. iu
chnh Edge Thickness l mc lm tng ni ca nn, nhp nt tam gic trong mc
Edge Thickness mt thc o x xung. - C th thay i gi tr ca Edge
Thickness bng cch ko con trt trn thanh thc o hoc nhp thng s trc tip
vo mc ny. - nh bn cho thy kt qu khi Edge Thickness c gi tr 50. Mc
Light Angle l gc chiu nh sng ca n, nhp nt tam gic trong mc Light
Angle x xung vng trn u khin, thay i gc chiu ca mc Light Angle. Nhp
chn vch iu khin lm gc chiu sng thay i. - i vi mc Light Color c tc
dng chn mu cho nh sng chiu. chn mu bng cch nhp vo trng trc biu tng
ng ht, hp thoi Color Picker hin ra. - Khi hp thoi Color Picker hin
ra, bt u chn mu cho n chiu, th chn mu vng c gi tr l R: 255; G: 255;
B: 0. - Cn mc light Intensity l chiu sng ca n cng c mt thanh thc
dng hiu chnh. - Ngoi ra, trong mc hiu chnh hiu ng Bevel Edges cn c
nt Reset, nhp nt ny th cc mc hiu chnh s tr v mc nh. Mt khc, vic t
keyframe cng ging nh cc hiu ng khc.-
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HIU NG LENS DISTORTIONcng nh cc hiu ng khc, hiu ng Lens
Distortion l mt hiu ng hay, to hnh nh p mt cho on video. Hiu ng ny
lm cho khung hnh ca on video co gin v thay i mu mt cch nhp nhng. -
Nhp nt tam gic trong mc Distort, mt danh sch x xung vi nhiu hiu ng
khc nhau, trong c hiu ng Lens Distortion. - Hp thoi Effects Control
xut hin vi nhiu mc hiu chnh, trong c mc iu chnh hiu ng Lens
Distortion. Nhp tam gic trong mc Lens Distortion, mt danh sch hiu
chnh x xung. - Biu tng ng h bn tri mi mc c tc dng thit t keytrame,
tc l to mc thi gian t hiu chnh. - M cc nt tam gic trong mi mc xung
u l nhng thc iu chnh gi tr ca mi mc. c th ko con chy trn thc o hiu
chnh gi tr ca tng mc. nu khng ta c th nhp gi tr trc tip vo mc gi
tr. - Trong mc iu chnh Lens Distortion c nt Setup kh c bit, rt d
cho vic hiu chnh. Nhp vo nt ny th hp thoi Lens Distortion Setting
hin ra. - Hp thoi Lens Distortion Setting hin ra nh hnh di: - u tin
l khung settings vi y mc hiu chinh cho hiu ng lens distortion c th
hiu chinh v xem mn hnh kim tra k cn - Cn khung sample dung dung kim
tra cc mc hiu chnh .khung fill l dng t mu cho phn nn ,cng c mn hnh
k cn dng cho vic ht mu lm mu nn, a tr chut vo khung nh ,tr chut bin
thnh mt ng ht mu,r ng ht ti ch c mu thch hp, nhp chn mt mu lm mu nn
- Mun t mu cho nn ,nhp vo mu color ,cn mc fill alpa channel nn nh
du kim vo mc ny v khi nh du kim vo th mu t s t ht cc knh alpha. -
Khi nhp vo mu trong mc color th hp thoi color picker hin ra .r tr
chut trn khung mu chn mu thch hp cn t. Hoc c th nhp gi tr vo r,g.b
k bn chn xong ,nhp OK - By gi , n vic t keframe cho on clip. Cc bc
nh sao ;ty on clip di hay ngn m ta t leyframe cho thch hp . y on
clip nhp vo c thi lng l 5 giy thi gian mc nh ca nh tnh, ta s t 3
keyframes. Nhp vo mc timecode trn thanh timeline v nhp gi tr 1 giy
vo. Sao , nhn enter.-
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nh du kim vo mc hiu chnh trong mc lens distortion trng hp thoi
effect controls. - Chnh thng s nh sau;nhp vo mc curvature gi tr 26,
a tr chut vo khung hnh k cn mu color . - Lc , tr chut bin thnh ng
mu ta chn mu thch hp ri nhp chn mu. Sau nhp OK hon thnh keyframe u.
a thi gian hin hnh ln thi im giy th 3. - Nhp cc gi tr sau: -
Curvature: 8 - Vertical Decentering: 46 - Horizontal Decentering: 1
- Vertical Prism FX: -31 - Horizontal Prism FX: -3 - Nhp vo mu
Color hp thoi Color Picker hin ra, nhp tr s nh sau: R: 255; G:255;
B: 0. Chn mu xong, nhn OK. - a thi gian hin hnh ln thi im 4 giy 10
frame - Nhp cc thng s nh sau: - Curvature: -68 - Vertical
Decentering: 4 - Horizontal Decentering: -39 - Nhp xong nhp vo nt
OK. - Sau khi t xong 3 Keyframes, render xem th, bng cch nhn nt
Enter mt hp Rendering Files hin ra c vt en chy t tri sang phi. sau
chy xong mn hnh Monitor s hin th kt qu mt ln, nu ta mun xem li ch
cn nhn phm Enter.-
HIU NG STYLIZE REPLICATECng nh cc chng trnh lm phim khc th Adobe
Premiere Pro c mt th vin hiu ng kh a dng. hiu ng Stylize Replicate
l mt hiu ng rt p mt v hp dn nhng ngi say m v ngnh dng phim. - Nhp
tam gic trong mc video Effects. Mt danh sch x xung vi nhiu mc trong
c mc Stylize vi hiu ng Replicate. - Nhp tam gic trong mc Stylize mt
danh sch hiu ng x xung chn hiu ng Replicate. - Ko hiu ng Replicate
trong ca s Effects v ko r xung t vo on clip FOI.jpg trong rnh Video
1. - Hp thoi Effects Controls xut hin vi nhiu mc iu chnh trong c mc
iu chnh hiu ng Replicate.4
Nhp nt tam gic trong mc Replicate x xung mc hiu chnh Count. Mc
ny ang c gi tr l 2. c th thay i gi tr bng cch a tr chut li gn s 2,
lc tr chut bin thnh mi tn hai chiu nm ngang, c th ko sang tri hay
sang phi ty . iu chnh sang tri gi tr s gim; iu chnh sang phi gi tr
s tng. Gi tr Count s quyt nh i tng sinh ra. - C th iu chnh gi tr
Count bng cch nhp vo nt tam gic mc Count mt thc hin th xut hin v ko
mc o trn thanh trt th gi tr Count thay i. - Ngoi ra, trong mc
Replicate cn c nt Setup, nhp vo nt ny mt hp thoi hin ra. - Hp thoi
Replicate Settings hin ra v trong hp thoi ny cng c thc hin th v mt
mn hnh kim tra, c th thay i gi tr ca Count bng cch dng ko nt trt bn
di thc hin th. V mn hnh mn hnh s kim tra hin ln gi tr . Sau y l hin
gi tr 16 ca Count. Gi tr 16 ny lm trn mn hnh hin ra 256 hnh ( xem
hnh trang sau) Ghi ch: Chng ta cng c th thit t cc Keyframes cho tng
thi im khc nhau ging cc hiu ng khc trong ca s Effects. - Ngoi ra
trong mc Replicate cn c nt Reset nm k nt Setup, trong mc ny c tc
dng a gi tr ca Count v 2 mt cch nhanh chng m khng cn n thanh trt. -
Nh vy, l chng ta tm hiu xong v hiu ng Stylize Replicate.-
HIU NG TINTHiu ng Tint l hiu ng lm m nh vi mt ch mu, to ra mt
hiu ng kh c bit. hiu ng ny rt hay khi p dng vic to ra cc khung hnh
mang tnh cht ngh thut. s dng cc mu khc nhau ha trn vo khung hnh, to
ra mt hiu ng mu c sc, gy ch cho ngi xem. - Ch : Hiu ng ny c gi l
hiu ng p mu vo khung hnh. - Nhp v tam gic trong mc Motion, mt danh
sch x xung vi nhiu mc hiu chnh. Tt du kim trong mc Uniform Scale
Heigh v Scale Width mi c tc dng. sau , nhp vo mc Sacle Height l
66.0 v mc Scale Width l 72.0. - Nhp nt tam gic trong mc Video
Effects, mt danh sch x xung vi nhiu mc trong c mc Image control,
nhp tip nt tam gic trong mc Image control. Trong c hiu ng
Tint.-
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Ko hiu ng Tint trong ca s Effects xung t vo on clip MNTN21.JPG.
- Trong ca s Effect Control, nhp vo nt tam gic trong mc Tint mt
danh sch x xung. - Mc Map Black to l mc mu t mu en n mu t chn, c th
dng biu tng ng ht ht ly mu trn hnh nh. - Nhp vo biu tng ng ht gi
chut r vo hnh khi c mu thch hp th th chut ra. Khi , mu s tr thnh mu
c chn. - Nhp vo mu trng trc biu tng ng ht mu nh hnh di: - Mc Amount
to Tint l mc mu, ko con trt trn thanh thc mu t s mu. - Trong mi mc
hiu chnh k xo c nt Toggle the effect on or off. Nu b biu tng ny th
hiu ng khng c tc dng. khi chnh hiu ng qu mc chng ta c th a v mc nh
ban u bng nt Reset.-
HIU NG TWIRLi vi Adobe Premiere Pro th hiu ng Twirl kh hay, l
hiu ng xoy vng, vi xoy c th iu chnh v thit t Keyframe. - Nhp nt tam
gic trong mc Motion. Mt danh sch x xung vi nhiu mc hiu chnh, nhp vo
mc Scale Height l 72.0. Tt b du kim trong mc Uniform Scale th 2 mc
trn mi c tc dng. - Nhp nt tam gic trong mc Video Effects, mt danh
sch x xung vi nhiu mc trong c mc Distort vi hiu ng Twirl. - Nhp nt
tam gic trong mc Distort, mt danh sch x xung vi nhiu hiu ng khc
nhau, trong c hiu ng Twirl. - Ko hiu ng Twirl trong ca s Effects
xung t vo on clip MNTN21.JPG trn thanh Timeline. - Hp thoi Effects
Control, nhp vo nt tam gic trong mc Twirl, mt danh sch hiu chnh x
xung. - Trong hiu ng ny c 3 mc hiu chnh. u tin nhp vo nt tam gic
trong mc Angle y l mc chnh mc xoy trn ca hnh nh. C th nhp tr s trc
tip vo hoc chnh bng kim trn vng trn. - Cch chnh bng cch nhp gi tr
trc tip, nhp vo thng s trong mc Angle v nhp gi trn mi. sau , nhn
Enter. - Cch chnh bng vng trn, a tr chut vo kim vng trn v ko theo
chiu vng trn.-
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Mc Twirl Radius l bn knh ca vng xoy, nhp tam gic trong mc ny mt
thc o s hin ra, c th chnh trn thc o bng cch ko con chy trn thc o,
gi tr ca mc ny s thay i theo. - Hnh kt qu ca mc Twirl Radius vi gi
tr l 100. - Mc Twirl Center l mc iu khin tm vng xoy ln xung hay qua
li. - Nu chnh khng ng c th nhp vo nt Reset cc mc s tr v mc nh. - Ch
: cc hiu ng ca Adobe Premiere Pro iu c mc Toggle the effect on or
off. Nu khng c biu tng trong mc ny th hiu ng khng c tc dng.-
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