JPEXS Free Flash Decompiler
JPEXS Free Flash Decompiler is a resource extractor for Flash files. You can extract a Flash file's vector drawings in multiple formats, as well as extract sound and images. You may be pleased to know you can extract sprites as standalone GIF, Flash, AVI video or HTML5 Canvas animations.
Of all the Flash decompilers I have tried, this allows you to visually view multiple resources at once, and can handle opening large files. In contrast, SWFRIP would crash on opening certain files, crash on exporting multiple files, and the preview area was blank. Sothink SWF Decompiler was my previous program, but it does not work on Windows 10, claiming it does not have the Flash Player ActiveX control, even after installing it.
If you need a simpler program to obtain images and sounds/music only, and don't use vectors, I recommend SWF Extractor
I used JPEXS Free Flash Decompiler program to extract fan-made sheep from Flash preloaders and place them on the Brand Resources page as a collection SVG vectors.
Please only use decompilers for good purposes such as resource retrieval.