Old Flash versions does not support a transparency PNG image files. This utility converts PNG file to SWF file clip to be used as a transparent clip image.JavaSWF project
Here is PNG2SWF.java test program results. It add same image
twice so that they overlap. We can then see how alpha channel works.
image1_result_artifacts.jpg displayes strange artifacts in a result swf file.
ogre1png_result_artifacts.jpg shows how colors are broken.
Images are taken from Ogre3D demos.
This is javaswf.zip CVS dump, where png image support is fixed. See javaswf_readme.rtf in a zip file for more information. Few other small fixes were made as well.