[premiere pro讲座之一]动态遮罩篇

orangeduck

<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>
9 F0 E+ J3 N/ y' T" o<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>
<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)
* s' W4 ]0 U0 h* E( V5 w: k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="" />
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="" />
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="" />
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="" />
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="" />
2 X+ n% G6 A* @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>
  F" Q8 @) T; c& Q: o8 O9 u<P>1．先建立三个Sequence（序列） </P>
4 X, [  i* D4 v/ O0 V<P>2．然后在Sequence 01的轨道1中放入背景素材。 </P>
- u6 y8 C. p4 R( Q2 o1 |<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>
<P>4．设置遮罩图形的运动路径。 </P>
0 T& Q  f+ O9 G0 x" `: g<P>5．将制作的遮罩图形片段复制。</P>
<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>
  `% A& h$ K2 Q* n3 H' {<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>
% y- f- }& i: \6 l7 O<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>
# j6 y# Y* A' \$ V( K( x<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>
6 H6 Q! {% j3 o& o1 c, A+ |2 u<P>
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>
<P>
. V* l) P+ n( P9 N2 P. T: y% B11．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>
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[此贴子已经被作者于2005-3-17 10:55:37编辑过]

orangeduck

先挖个坑!留着后面用.呵呵

酷酷儿

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…………