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Download Codec Audio Windows Media Player 9 _VERIFIED_



Windows Media Player 9 Codecs Pack is an update pack for the media player from Microsoft designed for its ninth version. The software was updated partly in response to the European Commission that previous editions of the Microsoft software breached certain laws in Europe. The codecs pack was partly intended to address this by broadening the number of types of audio or video content that would be supported by the Windows Media Player.




download codec audio windows media player 9



A codec is a package that can decode audio streams which have been encoded a certain way in order to save space. The audio files cannot be played successfully unless the media player has the right codec installed. Installation of this code pack from Windows Media Player 9 therefore expands out considerably the types of encoded media content that the player can decode correctly.


Web streaming is also better supported with the pack than without it. There is included support for the Windows Media Video (WMV) format for streamed content. Some of the codecs have been created to help encode or decode video and audio streams automatically as needed. The Corona Windows Media Video Decoder DMO and the Windows Media Audio Decoder are also included. These can deliver a smooth visual and auditory experience.


MP4 is a standardized video file format that almost all devices and video players support MP4s. Yet, sometimes the native Windows Media Player cannot play MP4 file. There can be obscure error codes, audio or video playback issues, corrupted file problems, or invalid file format. The error message often looks like this:


In case the Windows Media Player is not playing MP4 files, or it does not display video, or it plays the video fine but no audio, it's likely that you don't have the proper codec pack on your PC to play that video file. Click here for more information about codecs.


To be clear, according to Microsoft support, older Windows Media Player software doesn't do well with .mp4 formats: WMP 11, WMP 10, WMP 9 Series, WMP for XP, WMP 7; and even Windows Media Player 12 will not play all MP4 Videos, but only those encoded with MPEG-4 video codec and AAC audio codec. You may also experience this WMP 12 & .mp4 playback problem after updating to Windows 10.


If you find that Windows Media Player doesn't open MP4 files, your first stop is check for updates and downloading codecs. Codecs are small programs that allows your computer to recognize MP4 video files and have them play properly.


The program is more powerful than it looks. In addition to converting MP4s to WMV for Windows Media Player, you can effectively extract the audio from the video file, as well as batch-convert multiple files at a time by adding them to the software window. It also gives you the ready-made output profiles so you don't have to fiddle with which codecs are compatible with new file. The preview allows you to play the video in real time. The process:


Windows Media Audio (WMA) is a series of audio codecs and their corresponding audio coding formats developed by Microsoft.WMA is a lossless file format,This means that WMA media doesn't lose as many sonic details during compression. It is a proprietary technology that forms part of the Windows Media framework. WMA consists of four distinct codecs. The original WMA codec, known simply as WMA, was conceived as a competitor to the popular MP3 and RealAudio codecs.[2][3] WMA Pro, a newer and more advanced codec, supports multichannel and high resolution audio.[4] A lossless codec, WMA Lossless, compresses audio data without loss of audio fidelity (the regular WMA format is lossy).[4] WMA Voice, targeted at voice content, applies compression using a range of low bit rates.[4] Microsoft has also developed a digital container format called Advanced Systems Format to store audio encoded by WMA.


The first WMA codec was based on earlier work by Henrique Malvar and his team which was transferred to the Windows Media team at Microsoft.[5] Malvar was a senior researcher and manager of the Signal Processing Group at Microsoft Research,[6] whose team worked on the MSAudio project.[7] The first finalized codec was initially referred to as MSAudio 4.0.[8][9] It was later officially released as Windows Media Audio,[1] as part of Windows Media Technologies 4.0. Microsoft claimed that WMA could produce files that were half the size of equivalent-quality MP3 files;[10] Microsoft also claimed that WMA delivered "near CD-quality" audio at 64 kbit/s.[10] The former claim however was rejected by some audiophiles[11] and both claims have been refuted through publicly-available codec listening tests. RealNetworks also challenged Microsoft's claims regarding WMA's superior audio quality compared to RealAudio.[3]


Newer versions of WMA became available: Windows Media Audio 2 in 1999,[12] Windows Media Audio 7 in 2000,[13] Windows Media Audio 8 in 2001,[14] and Windows Media Audio 9 in 2003.[4] Microsoft first announced its plans to license WMA technology to third parties in 1999.[15] Prior to Windows XP , WMA files were primarily streamed using the Windows Media Source Filter (DirectShow codec), later being removed in Windows Vista with the addition of Media Foundation.[16] Although earlier versions of Windows Media Player played WMA files, support for WMA file creation was not added until the seventh version.[17] In 2003, Microsoft released new audio codecs that were not compatible with the original WMA codec. These codecs were Windows Media Audio 9 Professional,[4] Windows Media Audio 9 Lossless,[4] and Windows Media Audio 9 Voice.[4]


Since 2008 Microsoft has also been using WMA Professional in its Protected Interoperable File Format (PIFF) based on the ISO Base Media File Format and most commonly used for Smooth Streaming, a form of adaptive bitrate streaming over HTTP. Related industry standards such as DECE UltraViolet and MPEG-DASH have not standardized WMA as a supported audio codec, deciding in favor of the more industry-prevalent MPEG and Dolby audio codecs.


Each WMA file features a single audio track in one of the four sub-formats: WMA, WMA Pro, WMA Lossless, or WMA Voice. These formats are implemented differently from one another, such that they are technically distinct and mutually incompatible; that is to say, a device or software compatible with one sub-format does not therefore automatically support any of the other codecs. Each codec is further explained below.


Windows Media Audio (WMA) is the most common codec of the four WMA codecs. The colloquial usage of the term WMA, especially in marketing materials and device specifications, usually refers to this codec only. The first version of the codec released in 1999 is regarded as WMA 1. In the same year, the bit stream syntax, or compression algorithm, was altered in minor ways and became WMA 2.[12] Since then, newer versions of the codec have been released, but the decoding process remained the same, ensuring compatibility between codec versions.[12] WMA is a lossy audio codec based on the study of psychoacoustics. Audio signals that are deemed to be imperceptible to the human ear are encoded with reduced resolution during the compression process.


Certified PlaysForSure devices, as well as a large number of uncertified devices, ranging from portable hand-held music players to set-top DVD players, support the playback of WMA files. Most PlaysForSure-certified online stores distribute content using this codec only. In 2005, Nokia announced its plans to support WMA playback in future Nokia handsets.[20] In the same year, an update was made available for the PlayStation Portable (version 2.60) which allowed WMA files to be played on the device for the first time.[21]


Windows Media Audio Professional (WMA Pro) is an improved