Overview River Past QuickTime DirectShow Filter for WMP let you play QuickTime, MPEG-4(MP4, M4V), DV and 3G (3gp and 3g2) video, MPEG-4(M4A) and AMR audio, animated GIF and FLC animations in Windows Media Player. Compatibility It is implemented as a DirectShow filter, using the native QuickTime codecs. By using QT codecs, it has the compatbility as the regular QT Player. It is compatible with a