Adobe Flash Professional CS6 Adobe Flash Professional CS6 Classroom In A Book | Page 332

Transparencies in video (called alpha channels) are supported only in the FLV for- mat using the On2 VP6 codec. When encoding a video with an alpha channel from Adobe Media Encoder, be sure to choose Edit > Export Settings, click the Video tab, and then select the Encode Alpha Channel option. You’ll import the video file, which is already in FLV format, into Flash for display with the playback component. importing the video clip Now you’ll use the Import Video wizard to import the Popup.flv file, which has already been encoded with an alpha channel. 1 Insert a new layer called popupvideo. 2 Insert a keyframe at frame 50 and insert another keyframe at frame 86. You’ll place the video of the zoo director at the end of the musical introduction at the same time the stop action appears (frame 50). The keyframe at frame 86 ensures that the video of the zoo director disappears from the Stage when the animal videos appear. 3 Select the keyframe at frame 50. 4 Choose File > Import > Import Video. 5 In the Import Video wizard, select On Your Computer and click Browse. Select the Popup.flv file in the Lesson08/08Start folder and click Open. 6 Select Load external video with playback component. Click Next or Continue. 7 Select the same skin that you’ve been using from the Skin menu and click Next or Continue. Adobe FLAsh ProFessionAL Cs6 CLAssroom in A book 323