tailieunhanh - Adobe Flash chuyên nghiệp - p 33

where the background of the video is totally transparent and can show weather graphics behind the person. Transparencies in video (called alpha channels) are supported only in the FLV format using the On2VP6 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 file, which has. | where the background of the video is totally transparent and can show weather graphics behind the person. Transparencies in video called alpha channels are supported only in the FLV format using the On2VP6 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 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 file in the Lesson08 08Start folder and click Open. ADOBE FLASH PROFESSIONAL CS5 CLASSROOM IN A BOOK 311 Download from Library of Wow ebook 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. 8 Click Finish to place the video. The video of the zoo director with a transparent background appears on the Stage. 9 Preview the video on the Stage by clicking the play button on the skin. Note If you don t stop one video before navigating to another keyframe containing a second video the audio can overlap. To prevent overlapping sounds use the command SoundMixer. stopAll to stop all sounds before starting a new video. The ActionScript in the first keyframe of the actions layer in your .