<P>橘鸭鸭喜欢后期制作,也经常和朋友们讨论后期制作.KK老拉ME来来开个讲座,今天恰好有点时间,稍微过来絮叨两句,不过前提是大家基本掌握Adobe Premiere的简单入门操作(8要太容易哦).现在以橘鸭鸭目前使用的PRO这个版本为例.</P>2 Y" B* |/ g9 w$ x$ h
<P>大家都知道PR是现在市面上后期非编的主流成员之一.做特效的功能虽然不如她的同胞姐妹AE,但是PR目前不断更新,配合各种插件的使用,功能上日益接近AE,剪辑本领自然不同凡响!</P>
5 b: |9 w" a6 \<P>如何能随心所欲地在A视频片段里插上B视频的某个局部画面,同时还可让B视频的这个局部画面随心所欲地在A视频中移动?呵呵,规则的抠像会声会影和SONY VEGAS都有设定好现成的,但是如何随心所欲的抠出你想要的形状,让A和B视频达到尽可能完美的结合(如图四、图五、图六中,做成这样的前景和后景的人物)?这里先简单讲讲如何在PR里面制作动态遮罩,先说一种十分常用而有用的方法,需要ADOBE家族的另外一个成员PHOTOSHOP的帮手.(时间关系,图图稍后送上,此外还有要请某月和KK解决帮手我上传的问题)* j: |. k x* T! g. x) M2 W/ c
图一<img src="attachments/dvbbs/2005-3/200531710271790.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-3/200531710271790.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /> Z" [4 @" X3 l
图二<img src="attachments/dvbbs/2005-3/2005317102941451.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-3/2005317102941451.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
4 o$ E- w: K2 A" |2 N/ f/ [图三<img src="attachments/dvbbs/2005-3/2005317103214890.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-3/2005317103214890.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />9 ^ }1 q4 P z
图四<img src="attachments/dvbbs/2005-3/200531710343061.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-3/200531710343061.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />; ]. H4 V: @ A( V5 G8 R9 J
图五<img src="attachments/dvbbs/2005-3/2005317105131714.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-3/2005317105131714.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />' L& X+ G0 D+ ^9 ^3 ]; R0 I
图六<img src="attachments/dvbbs/2005-3/200531710553307.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-3/200531710553307.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /></P># j! U9 D" @8 ?- K2 A9 e9 D
<P>1.先建立三个Sequence(序列) </P>
! B* }+ D, g% ~6 @1 W<P>2.然后在Sequence 01的轨道1中放入背景素材。 </P>2 N' N5 j2 m4 r6 n
<P>3.在Sequence 02中放入遮罩图形(用PHOTOSHOP做出:要想在A视频片段中显示的B视频的局部画面部分作成透明的,然后其他部分都做成黑色,同时输出GIF格式图片)。 </P>9 r8 m& [$ v- _
<P>4.设置遮罩图形的运动路径。 </P>0 y/ u$ n" J8 z" X3 q
<P>5.将制作的遮罩图形片段复制。</P>- m0 @ R7 {0 V& j" ^
<P>6.将欲随遮罩图形移动的图片放入Sequence 03的轨道1中,并粘贴Sequence 02中的属性。 </P>
& B8 Q# T1 S) V3 p4 M7 y6 L: k# J<P>7.由于图片的大小与遮罩图形的大小不同,所以还要调整图片的缩放比例和位置。 </P>: a {$ N5 G$ q0 I5 Z
<P>8.然后,将sequence 02拖入sequence 01的轨道3中,将sequence 03拖入sequence 01的轨道2中。 </P>
& Y" l6 B# v2 ~0 x; L ~<P>9.打开视频效果keying文件夹,将Alpha Adjust效果拖入sequence 01轨道3的sequence 02中,将Track Matte key效果拖入轨道2的sequence 03中。 </P>; V$ u6 P+ \; u5 W
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10.选中轨道3中的sequence 02,在效果控制窗口中展开效果Alpha Adjust,选中lgnore Alpha和lnvert Alpha选项。 </P>4 B5 D, V6 o% O6 p) @
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11.选中轨道2中的sequence 03,在效果控制窗口中展开效果Track matte key效果,在Matte中选择video 3,在Composite Using中选择Matte Luma。</P># w3 k9 ] j9 ]. g8 n
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/ v: D$ ]0 }$ H0 A7 }) e# n+ }" t[此贴子已经被作者于2005-3-17 10:55:37编辑过]
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