MKV/OGM/MP4 Support in Vista 2.0: Visual Edition
If you have downloaded or installed any other type of codec pack, Now that you’ve done all the above, run Windows Media Player 11 at least once. mp4file.reg - For MP4 files. Be sure to keep a copy of this around if you install
K12 Keynote: How to Open and Play an MP4 file.
Windows Media Player nor Real player nor QuickTime will view MP4 files without a codec installed. A Codec is like a lation service. So, here is how you do that. (It took me 30 minutes to figure it out.)
New Video/Audio Codecs:update 2nd Sept ‘06
MP4 splitter (Haali Media Splitter) [1.6.224.23] Media Player Classic [version 6.4.9.0] - RealMedia Codecs [version 6.0.12.1483] RealMedia Splitter: allows you to play RealNetworks audio/video files using Windows Media Player.
MediaCoder - Free universal Windows Audio Movie Converter
Here is the list of audio/video coder that media coder can support :- RealVideo*, Windows Media; AVI, MPEG/VOB, Matroska, MP4, RealMedia*, ASF/WMV, Quicktime*, utility where it not dependent on any media player, filter or codec,
Media Player 11 is useless
the new version of Windows Media Player does not support m4a files. The Player can’t play iTunes music files with .aac or .m4p (protected AAC) file name My other favourite codec for music is also not supported, the .ogg
MP4 Videos - What Is MPEG 4
The DivX Codec can be quite easily related to the MPEG-4 format as Windows Media Player cannot play MPEG-4 Encoded Files unless the Codec exists Its basically compression but in a quite safe and secure environment. MP4 is a format used
MediaCoder - audio/video batch converter
which puts together lots of excellent audio/video codecs and tools from the open Fully standalone, no dependent on any media player, filter or codec, RealVideo*, Windows Media; AVI, MPEG/VOB, Matroska, MP4, RealMedia*,
Pocket PC Win2003: DivX and Mp4 playback
I don’t have access to a Windows Mobile 5 device or a Palm Treo, I have been able to track down a new media player that will play DivX and even the This will come with the DivX 5 codec and the MP4-SP (not H.264) video codec’s.
Upgrade ur WMP with new codecs 3GP,MP4,AMR,AWB
If u want to upgrade ur windows media player or have problems with some codecs,add this codecs to ur WMP download:
video format
that the higher-version Windows Media Player simply can’t play AVI videos If you happen to be stuck with these tracks, download related codecs to cope. MPEG(MPG), WMV, AVI, DivX, MP4,, PSP among most popular video formats.

Windows Media Player multimedia file formats
To make sure that you can play files that are encoded with this codec, It typically uses the .mp4 extension. Windows Media Player does not support the
K-Lite CodecPack [Download software gratis Freeware Codec Microsoft ]
Scarica K-Lite CodecPack per Windows, Download per Windows Il K-Lite Codec Pack Full comprende: Player: Media Player Classic [version 6.4.9.0 rev. 611]
3ivx D4 4.5 - MPEG-4 Audio and Video Technology - Windows Download
3ivx DirectShow Media Muxer - 3ivx Video for Windows (VfW) Video codec A multimedia player with a similar interface to Microsoft Windows Media Player
Free-Codecs.com : Download 3ivx D4 4.5.1 : 3ivx is an MPEG-4
Audio Codec Tag 5376 may be requested when 3ivx is missing. M4A, MP4 and MOV can now be used in Windows Media Player's Media Library and Playlists.
Find A Codec For Windows Media Player 10 - HERE!
Get that codec for windows media player 10 - here is the information you need If you need the MPEG4 file format (.mp4) then try the Envivo plug-in.

3ivx D4 4.5 - MPEG-4 Audio and Video Technology - Windows Download
3ivx DirectShow Media Muxer - 3ivx Video for Windows (VfW) Video codec A multimedia player with a similar interface to Microsoft Windows Media Player
3ivx D4 4.5 - MPEG-4 Compression
The 3ivx decoder plays back most MPEG-4 files (including MP4, M4A, Philips MPEG-4 and XviD) using Windows Media Player or other compatible players.
Free-Codecs.com : Download 3ivx D4 4.5.1 : 3ivx is an MPEG-4
Audio Codec Tag 5376 may be requested when 3ivx is missing. M4A, MP4 and MOV can now be used in Windows Media Player's Media Library and Playlists.
Find A Codec For Windows Media Player 10 - HERE!
Get that codec for windows media player 10 - here is the information you need If you need the MPEG4 file format (.mp4) then try the Envivo plug-in.
Free DivX Player - play divx,mp3,mp4,mpeg,avi,asf,wmv,cd,dat with
Ace DivX Player is the best Windows Media Player replacement program, If you have DivX Codec installed on your system, Ace DivX Player will
PI Forum: Windows Media Player 11 sfida iTunes
Windows Media Player 11 sfida iTunes mp4! Ovviamente devi installare i codec. Prova a installare k-lite mega codec pack e vedrai che poi legge pure i
K-Lite CodecPack [Download software gratis Freeware Codec Microsoft ]
Il K-Lite Codec Pack Full comprende: Player: Media Player Classic [version 6.4.9.0 rev. 611] MP4 splitter (Haali Media Splitter) [version 1.6.224.23]
Streaming
Apple utilizza un codec MP4 compliant (e il formato mp4 e’ Codifica in formato Windows Media Video o Active Stream Format (.asf). – Windows Media Server