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[premiere pro讲座之一]动态遮罩篇

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发表于 2005-3-17 10:28:38 | 显示全部楼层 |阅读模式
<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>" R9 m( B4 K! A7 I5 L
<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>
. V4 s; ~( O8 t4 g# _: @9 J<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)
5 m% _; D2 K" A9 I( O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="" />
! _# D, r4 v4 q& C7 q# p% H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="" />
) O3 a) p# g* f2 E" t5 X+ l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="" />
* a$ V. {0 X9 F/ `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="" />/ ?; t" R) M- c2 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="" />
9 M4 W" J  c8 l$ G$ n9 m" k  K) m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>
0 Q$ M+ U4 B) ^& N8 w<P>1.先建立三个Sequence(序列) </P>6 N3 I4 l4 p2 D& G7 A4 w1 w
<P>2.然后在Sequence 01的轨道1中放入背景素材。 </P>6 E; [. K& z& ^  b  V
<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 J/ M6 N( e6 c4 \& f/ ], U<P>4.设置遮罩图形的运动路径。 </P>
3 S* S3 d2 F# u$ W<P>5.将制作的遮罩图形片段复制。</P>
, t: t8 ]6 B3 U+ W<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>% y5 P/ C0 e2 v7 s
<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>7 g' u+ ^2 [! \; o; u
<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>7 x# P; P% l3 [( S
<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>! r1 }! f  k7 R4 s( @# C
<P>
! m, i# v0 \8 F$ }, e' R10.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>
8 ^3 ?+ B, p! _: o! I( @( z% q<P>
) o9 ?  z$ |; v' B; c' q5 k11.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>+ |4 O3 C$ H( A. Q
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[此贴子已经被作者于2005-3-17 10:55:37编辑过]

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 楼主| 发表于 2005-3-17 10:40:27 | 显示全部楼层
先挖个坑!留着后面用.呵呵
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发表于 2005-3-17 12:12:09 | 显示全部楼层
挖哈哈哈……桔鸭说话算话,,,亲亲亲…………偶看到一了,还要有二,三,四………………N哦……哈哈哈…………
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