Support:kb408557 No playback of MPEG-2 and MPEG-4 playback

• kb408557: No playback of MPEG-2 and MPEG-4 playback in CS4 video-enabled applications (Windows)

When you try to view MPEG-2 and MPEG-4 files in Adobe Premiere Pro CS4, Adobe After Effects CS4, or Adobe Encore CS4, nothing is displayed.