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<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>
( u! U, ~9 ], s8 B<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>
! Z6 p: {8 [7 K# `: T/ a) Z<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); V1 B' F5 a; D0 Y: @1 h
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="" />8 ^9 e& p) u. n% S
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="" />0 Y/ o& l3 g |7 D5 v4 |
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="" />" |- `- U! ]6 \8 z* u
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="" />
0 z( q5 Z6 L% H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="" />
8 ~6 a' ]4 w( a0 G( g# s% Q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>
, h/ L: H) @3 d& Y# y<P>1.先建立三个Sequence(序列) </P>
# | C' @% z: c8 V [' P2 B5 W" W* ]<P>2.然后在Sequence 01的轨道1中放入背景素材。 </P>9 s. {: @8 U. J3 D
<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>7 `. r4 V/ k) u* M' A) i6 c
<P>4.设置遮罩图形的运动路径。 </P>
) J1 B$ _ v! G/ T+ X! `$ q" O Y( u a<P>5.将制作的遮罩图形片段复制。</P>8 V2 b& r" C# h+ V+ ]' D
<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>6 L* g* B& R8 H4 r! g) p
<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>& L) p, D& N; l- g6 @! 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>) s O5 C/ F+ |4 B: S4 P
<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>* p% J9 y& r/ k$ q$ r4 r
<P>
& ~4 m( Q6 Q" A0 N7 z10.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>3 E, g, [, K) _$ p
<P>
: X- ~% ?9 U3 _' B* 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] 5 b' Q; ~" n- N: m
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