Setting Bitmap Properties Flash

The Bitmap Properties dialog, shown below, has several options that are used to control the quality of your bitmaps.Follow these steps to use the Bitmap Properties dialog:

  1. Open the movie’s library with Window➪Library and select the bitmap.
  2. The Bitmap Properties dialog

    The Bitmap Properties dialog

  3. Double-click the bitmap’s icon, or right-click/Ctrl+click the bitmap’s name and select Properties to open the Bitmap Properties dialog. You can also select Properties from the Library’s Options menu or, with the bitmap highlighted, click the Properties button. Now, set the properties of your bitmap as desired:
    • Preview Window: This displays the bitmap according to the current settings.
    • Name: This is the name of the bitmap, as indicated in the Library. To rename the bitmap, highlight the name and enter a new one.
    • Image Path, Date, Dimensions: Beneath the name Flash lists the local path, dimensions, and date information for the source of the imported image (not available if you pasted the image from the Clipboard).
    • Update: This feature enables you to reimport a bitmap if it’s been altered outside of Flash. Flash tracks the original location of the imported bitmap and will look for the original file in that location when the Update button is clicked.
    • Import: This opens the Import Bitmap dialog. When using this button, the new bitmap will replace the current bitmap (and all instances, if any), while retaining the original’s name.
    • Test: This button updates the file compression information, which appears at the bottom of the Bitmap Properties dialog. Use this information to compare the compressed file size to the original file size.
    • Compression Type drop-down: The compression setting enables you to set the bitmap’s compression to either Photo (.JPEG) or Lossless (.PNG/ .GIF). Photo is good for very complex bitmap images (photographs for example); Lossless is better for bitmap images with areas of flat color. Play around with these settings to see which works best for each particular image.
    • Use imported .JPEG data/Use document default quality: If the imported image is a .JPEG, the first option will appear check this check box to avoid double-JPEG compression. If the image is not a .JPEG, the second option will appear check this check box to retain the original compression of the image.
    • Allow Smoothing (dither): Check this check box to enable Flash to attempt to dither, or smooth, the image. Results may vary according to the image. Generally, this is ill advised because it blurs an image. If you’ve imported and placed a perfectly optimized image, at 100 percent scale, this will noticeably degrade the image quality. It’s better to optimize images outside of Flash and then insist that Flash doesn’t mess with them.
  4. Click OK. All copies of this bitmap used in Flash are updated to the new settings.


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