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The following table provides information about the Windows Media Encoder features that have specific Microsoft Windows Media Player, operating system, or codec requirements.
Feature | Windows Media Player | Operating systems |
Codecs | ||
6.4 | 7.1/Windows® XP | Corona (code name) | |||
Interlaced output video | X | Microsoft Windows XP |
Windows Media Video 9 |
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Nonsquare pixel output | X | ||||
Multiple-resolution MBR content | X | ||||
DRM support | X | X | X | ||
Multichannel audio | X | Microsoft Windows XP |
Windows Media Audio Professional 9 |
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High-resolution audio (24-bit, 96 kHz)1 | X | Microsoft Windows XP |
Windows Media Audio Professional 9 |
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Dynamic range control | X | Microsoft Windows XP |
Windows Media Audio Professional 9 |
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CBR encoding (one- or two-pass) | X | X | X | See the following table |
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Quality-based VBR | X | X | See the following table |
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Bit rate-based VBR | X | X | See the following table |
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Peak bit rate-based VBR | X | X | See the following table |
1 Earlier players or operating systems will render 16-bit, 48-kHz content
Note that content encoded with the version 9 codecs (except for the Windows Media Audio Standard 9 codec) is not supported in Windows Media Player version 6.4. For Windows Media Player version 7.1 and Windows Media Player for Windows XP, content encoded with any of the codecs requires users to download the codec before playback. Content encoded with the Windows Media Audio Standard 9 codec may have glitches or silence during playback in Windows Media Player version 6.4. For Windows Media Player version 7.1 and Windows Media Player for Windows XP, content encoded with the Windows Media Audio Standard 9 codec does not require a user to download the codec.
The following table lists the supported encoding methods for the codecs that are included with the encoder.
Codec | One-pass CBR | Two-pass CBR | Quality-based VBR | Bit rate-based VBR | Peak bit rate-based VBR |
Windows Media Audio Professional 9 | Yes | Yes | Yes | Yes | Yes |
Windows Media Audio Professional 9, lossless format | No | No | Yes | No | No |
Windows Media Audio Standard 9 |
Yes | Yes | Yes1 | Yes1 | Yes1 |
Windows Media Audio Voice 9 |
Yes | No | No | No | No |
Windows Media Video 9 |
Yes | Yes | Yes | Yes | Yes |
Windows Media Video 8.1 |
Yes | Yes | Yes | Yes | Yes |
Windows Media Video 7 |
Yes | Yes | Yes | Yes | Yes |
Windows Media Screen 9 |
Yes | No | Yes | No | No |
1 Some glitches or silence may occur during playback in Windows Media Player version 6.4.