2.然后在sequence 01的軌道1中放入背景素材。screen.width-500)this.style.width=screen.width-500;" border=0>
3.在sequence 02中放入遮罩圖形。screen.width-500)this.style.width=screen.width-500;" border=0>
4.設置遮罩圖形的運動路徑。screen.width-500)this.style.width=screen.width-500;" border=0>
5.將制作的遮罩圖形片段復制。screen.width-500)this.style.width=screen.width-500;" border=0>
6.將欲隨遮罩圖形移動的圖片放入sequence 03的軌道1中,并粘貼sequence 02中的屬性。screen.width-500)this.style.width=screen.width-500;" border=0>
7.由于圖片的大小與遮罩圖形的大小不同,所以還要調整圖片的縮放比例和位置。screen.width-500)this.style.width=screen.width-500;" border=0>
8.然后,將sequence 02拖入sequence 01的軌道3中,將sequence 03拖入sequence 01的軌道2中。screen.width-500)this.style.width=screen.width-500;" border=0>
9.打開視頻效果keying文件夾,將alpha adjust效果拖入sequence 01軌道3的sequence 02中,將track matte key效果拖入軌道2的sequence 03中。screen.width-500)this.style.width=screen.width-500;" border=0>
10.選中軌道3中的sequence 02,在效果控制窗口中展開效果alpha adjust,選中lgnore alpha和lnvert alpha選項。screen.width-500)this.style.width=screen.width-500;" border=0>
11.選中軌道2中的sequence 03,在效果控制窗口中展開效果track matte key效果,在matte中選擇video 3,在composite using中選擇matte luma。screen.width-500)this.style.width=screen.width-500;" border=0>
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