FFDSHOW MPEG-4 Video Decoder is a DirectShow decoding filter for decompressing DivX, XviD, H.264, FLV1, WMV, MPEG-1 and MPEG-2, MPEG-4 movies. It uses libavcodec from ffmpeg project for video decompression, postprocessing code from mplayer to enhance visual quality of low bitrate movies, and is based on original DirectShow filter from XviD, which is GPL’ed educational implementation of MPEG4 encoder.

First of all, the FFDSHOW MPEG-4 Video Decoder consumes way less CPU power than original DivX codecs, even with maximum post-processing. At the same time the post-processing seems to give excellent quality results and allows more configuring than the original DivX 5 codec. It can even automaticly reduce post-processing if your CPU is getting overloaded. The noise filter adds a kind of a rasterising effect to the picture - might be useful in some cases. The alpha version also includes experimental playback for MPEG-1 and MPEG-2 files (such as VCD and SVCD movies), which works pretty damn well. Only problem is that MPEG-2 playback can’t play the SVCD clips directly from the CD, but requires the video to be extracted to the HDD by using VCDGear first.

Developer: FFDShow.info
License: Freeware
OS: Windows All
Size: 3.9 MB
Download FFDShow MPEG-4 Video Decoder 2008-07-05 rev 2033 link

XP Codec Pack is one of the most completed codec packs which helps you to play all major audio and video formats.

And to enjoy your multimedia experience, instead of 3 or 4 different players you get one, simple integrated player that plays almost all audio and video files: Media Player Classic.

XP Codec Pack includes AC3Filter 1.46, AVI Splitter 1.0.0.9, CDXA Reader 1.0.0.2, CoreAAC (AAC DirectShow Decoder) 1.2.0, CoreFlac Decoder 0.4, FFDShow MPEG-4 Video, Decoder 2007.12.24, GPL MPEG-1/2 Decoder 0.1.2.0, Matroska Splitter 1.0.3.0, Media Player Classic 6.4.9.1, OggSplitter/CoreVorbis 1.1.0.79, RadLight APE Filter 1.0.0.4, RadLight MPC Filter 1.0.0.4, RadLight OFR Filter 1.0.0.4, RealMedia Splitter 1.0.1.2, RadLight TTA Filter 1.0.0.2, The Codec Detective 2.0, VSFilter (DirectVobSub) 2.38

Developer: XP Codec Pack
License: Freeware
OS: Windows All
Size: 6,8 MB
Download XP Codec Pack 2.3.8 link