A huge compilation of Win32 codecs: Video: - Win32 VfW DLLs: Indeo Video 3.2, 4.1 Microsoft MPEG-4 v1 & v2 beta Microsoft MPEG-4 v3 ( also known as DivX ;-) ) Cinepak Video ATI VCR-2 I263 - Win32 DirectShow filters, decompression-only support: Microsoft MPEG-4 v3 ( this decoder is slower than VfW one, but offers wider range of picture control features ) Windows Media Video 7 Indeo Video 5.0 Motion JPEG ( using Morgan Multimedia shareware codec ) - Open-source plugins: Motion JPEG ( using libjpeg, very slow ) Audio: - Win32 ACM DLLs, decompression-only support: Windows Media Audio ( also known as DivX ;-) Audio ) MS ADPCM Intel Music Codec - Open-source plugins, decompression-only support: PCM AC3 IMA ADPCM MPEG Layer-1,2,3 ( compression into MP3 is also supported ) MSN Audio GSM 6.1 Audio - Win32 DirectShow filters, untested decompression-only support: Voxware Metasound ACELP.net WWW: http://divx.euro.ru/