Windows Media Video 7/8 Encoder

The Windows Media Video 7/8 encoder implements previous versions of the Windows Media Video encoder.

Class Identifier

The class identifier (CLSID) for the Windows Media Video 7/8 encoder is CLSID_CWMVXEncMediaObject. You can create an instance of the encoder by calling CoCreateInstance.

Interfaces

A video encoder object exposes the IMediaObject interface so that the object can be used as a DirectX Media Object (DMO), and it exposes the IMFTransform interface so that the object can be used as a Media Foundation Transform (MFT).

A video encoder behaves as a DMO or an MFT depending on which interfaces you obtain and which version of Windows is running. The following table shows the conditions under which a video encoder behaves as a DMO or an MFT.

Operating system	Encoder behavior
Windows XP	A Windows Media video encoder always behaves as a DMO.
Windows Vista and Windows 7	By default, a Windows Media video encoder behaves as a DMO. If you obtain an IMFTransform interface on a video encoder, it behaves as an MFT.

Input Formats

The Windows Media Video encoder supports the following input media subtypes when it is acting as a DMO.

• MEDIASUBTYPE_IYUV
• MEDIASUBTYPE_I420
• MEDIASUBTYPE_YV12
• MEDIASUBTYPE_NV11
• MEDIASUBTYPE_NV12
• MEDIASUBTYPE_YUY2
• MEDIASUBTYPE_UYVY
• MEDIASUBTYPE_YVYU
• MEDIASUBTYPE_RGB32
• MEDIASUBTYPE_RGB24
• MEDIASUBTYPE_RGB565
• MEDIASUBTYPE_RGB555
• MEDIASUBTYPE_RGB8
• MEDIASUBTYPE_PHOTOMOTION

The Windows Media Video encoder supports the following input media subtypes when it is acting as an MFT.

• MFVideoFormat_IYUV
• MFVideoFormat_I420
• MFVideoFormat_YV12
• MFVideoFormat_NV11
• MFVideoFormat_NV12
• MFVideoFormat_YUY2
• MFVideoFormat_UYVY
• MFVideoFormat_YVYU
• MFVideoFormat_RGB32
• MFVideoFormat_RGB24
• MFVideoFormat_RGB565
• MFVideoFormat_RGB555
• MFVideoFormat_RGB8
• MEDIASUBTYPE_PHOTOMOTION

Output Formats

The following table shows the four-character codes (FOURCCs) for the output types supported by the Windows Media Video 7/8 encoder.

Category	FOURCC
Windows Media Video 7	«WMV1»
Windows Media Video 8	«WMV2»

Properties

The Windows Media Video 7/8 encoder supports the following properties.

Windows Media Audio Encoder

The Windows Media Audio encoder encodes audio streams. The encoder supports three categories of encoded output: Windows Media Audio Standard, Windows Media Audio Professional, and Windows Media Audio Lossless.

Class Identifier

The class identifier (CLSID) for the Windows Media Audio Encoder is represented by the constant CLSID_CWMAEncMediaObject. You can create an instance of the audio encoder by calling CoCreateInstance.

Input Formats

The following table shows the audio format tags that represent the input categories supported by the Windows Media Audio encoder. For information about how to set the input and output types for the encoder, see Configuring Audio Encoding.

Format tag constant	Format tag value	Audio format
WAVE_FORMAT_PCM	0x0001	PCM format
WAVE_FORMAT_IEEE_FLOAT	0x0003	IEEE floating point
WAVE_FORMAT_EXTENSIBLE	0xFFFE	PCM/IEEE format in WAVEFORMATEXTENSIBLE structure

Output Formats

The following table shows the audio format tags that represent the output categories supported by the Windows Media Audio encoder.

Format tag constant	Format tag value	Audio format
WAVE_FORMAT_WMAUDIO2	0x0161	Windows Media Audio Standard
WAVE_FORMAT_WMAUDIO3	0x0162	Windows Media Audio Professional
WAVE_FORMAT_WMAUDIO_LOSSLESS	0x0163	Windows Media Audio Lossless

Interfaces

An audio endoder object exposes the IMediaObject interface so that the object can be used as a DirectX Media Object (DMO), and it exposes the IMFTransform interface so that the object can be used as a Media Foundation Transform (MFT).

A Windows Media Audio encoder behaves as a DMO or an MFT depending on which interfaces you obtain and which version of Windows is running. The following table shows the conditions under which an audio encoder behaves as a DMO or an MFT.

Operating system	Encoder behavior
Windows XP	A Windows Media Audio encoder always behaves as a DMO.
Windows Vista	By default, a Windows Media Audio encoder behaves as a DMO. If you obtain an IMFTransform interface or an IPropertyStore interface on an audio encoder, it behaves as an MFT.
Windows 7	By default, a Windows Media Audio encoder behaves as a DMO. If you obtain an IMFTransform interface on an audio encoder, it behaves as an MFT.

Encoder Properties

The Windows Media Audio encoder supports the following properties.

Windows Media Video 9 Encoder

The Windows Media Video 9 encoder encodes video streams. The encoder supports the following four categories of encoded output.

• Windows Media Video 9 Simple Profile
• Windows Media Video 9 Main Profile
• Windows Media Video 9 Advanced Profile
• Windows Media Video 9.1 Image

Class Identifier

The class identifier (CLSID) for the Windows Media Video encoder is represented by the constant CLSID_CWMV9EncMediaObject. You can create an instance of the video encoder by calling CoCreateInstance.

Interfaces

A video encoder object exposes the IMediaObject interface so that the object can be used as a DirectX Media Object (DMO), and it exposes the IMFTransform interface so that the object can be used as a Media Foundation Transform (MFT).

A video encoder behaves as a DMO or an MFT depending on which interfaces you obtain and which version of Windows is running. The following table shows the conditions under which a video encoder behaves as a DMO or an MFT.

Operating system	Encoder behavior
Windows XP	A Windows Media video encoder always behaves as a DMO.
Windows Vista and Windows 7	By default, a Windows Media video encoder behaves as a DMO. If you obtain an IMFTransform interface on a video encoder, it behaves as an MFT.

Input Formats

The Windows Media Video encoder supports the following input media subtypes when it is acting as a DMO.

• MEDIASUBTYPE_IYUV
• MEDIASUBTYPE_I420
• MEDIASUBTYPE_YV12
• MEDIASUBTYPE_NV11
• MEDIASUBTYPE_NV12
• MEDIASUBTYPE_YUY2
• MEDIASUBTYPE_UYVY
• MEDIASUBTYPE_YVYU
• MEDIASUBTYPE_RGB32
• MEDIASUBTYPE_RGB24
• MEDIASUBTYPE_RGB565
• MEDIASUBTYPE_RGB555
• MEDIASUBTYPE_RGB8
• MEDIASUBTYPE_PHOTOMOTION

The Windows Media Video encoder supports the following input media subtypes when it is acting as an MFT.

• MFVideoFormat_IYUV
• MFVideoFormat_I420
• MFVideoFormat_YV12
• MFVideoFormat_NV11
• MFVideoFormat_NV12
• MFVideoFormat_YUY2
• MFVideoFormat_UYVY
• MFVideoFormat_YVYU
• MFVideoFormat_RGB32
• MFVideoFormat_RGB24
• MFVideoFormat_RGB565
• MFVideoFormat_RGB555
• MFVideoFormat_RGB8
• MEDIASUBTYPE_PHOTOMOTION

Output Formats

The following table shows the four-character codes (FOURCCs) that correspond to the categories of encoded output.

Category	FOURCC
Windows Media Video 9 Simple Profile	«WMV3»
Windows Media Video 9 Main Profile	«WMV3»
Windows Media Video 9 Advanced Profile	«WVC1»
Windows Media Video 9.1 Image	«WMVP» for 9.1, «WVP2» for 9.1 version 2

To distinguish between Simple Profile and Main Profile, set the MFPKEY_DECODERCOMPLEXITYREQUESTED property.

Properties

The Windows Media Video 9 encoder supports the following properties.

Software » Video Encoders » Windows Media Encoder 9 Advanced Profile Update

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Description

Windows Media Encoder Series is a powerful tool for content producers who want to take advantage of the many innovations in Windows Media 9 Series including high-quality multichannel sound, high-definition video quality, new support for mixed-mode voice and music content, and more. Also Video Streaming, Media Stream Editor(multiplex and demultiplex wmv video streams).

9 Advanced Profile Update (May 26, 2006)

Download

Download old versions

Freeware (Free download and usage!)

Supported operating systems

Windows

Version history / Release notes / Changelog

Sections/Browse similar tools

Video Encoders (AVI/WMV)

Video Encoders / Converters

Video Streaming

Alternative to Windows Media Encoder

Encode360

WMNicEnc

WMV9 VCM

WMVMuxer

Guides and How to’s

AVI to (Xbox 360 compatible) WMV Conversion Guide

How to convert DV to WMV using Windows Media Encoder

How to stream live TV using Windows Media Encoder

Windows Media Encoder video tutorials

Acronyms / Also Known As

WME, WME9, Windows Media Stream Editor, Windows Media File Editor, Windows Media Profile Editor, Windows Media Encoding Script, Windows Media Editor, WM Encoder

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We use this to steam live to an external streaming service and we love it. It is very easy to use and streams good quality. Check it out at www.polr.org.

The command-line version of Windows Media Encoder produces stellar video and audio quality if you know what you’re doing! This encoder makes Windows Media the most underrated codec out there! Most people don’t realize that this is the exact same encoding engine used with HD-DVD and Blu-ray releases. And here it is. free for the taking from Microsoft. Take advantage, people! This is the real McCoy for Windows Media encoding if you can’t drop the coin on the new Expression Encoder with the nice point-n-click GUI.

With a little help from guides it is possible to create very good video from several common sources.

Encode speed for single pass WMV 9 is comparable to TMpeg on Motion Estimate Search for MPEG2 at same resolution input/output and no resizing or filters.

Encode speed for 2 pass is longer (5-6x original movie time on my Athlon 1.33 GHz). However, when compared to TMpeg using resizing and SOME filters, WMV 9 encodes much faster than TMpeg doing MPEG2.

I’ve observed WMV file sizes 30-50% smaller than MPEG2 at comparable bitrates.

Visual quality of the video is noticeably better than MPEG2, even when using filters and highest quality in TMpeg.

On the downside, if you are familiar with MPEG2 encoding, there is a little bit of a learning curve to go into WMV9, but not too much.

On the downside, WMV 9 encoder defaults to a fairly SOFT image quality. Change this to sharp or sharper settings (75-85 or better) to get better image quality.

One preferential note: not as many processing controls as TMpeg, but these can be done using other apps like VirtualDub, TMpeg etc, prior to encoding. Besides, some people prefer this anyway.

This program encodes perfectly fine for me. there are some faster ones out there, but this isn’t a gimp or anything. then again, noting ghostlamp, I’m running an AW =P.

I give this program a D. It is made for the person with a 4 ghz computer. You cant do any large screen output file conversions without a serious system. Windows recommends a 2ghz Dual processors computer. Most people barely have 2 gig systems. I tried it and was watching as I closed all programs and it still sucked up 100% usage for only a 800kbps convert to 640 size. I played it back and it was choppy. Plus you have to do two passes which will take you twice as long as a trial program.
I used AVS Convert to get a smooth 640 size 2mbps video. Sometimes you get what you pay for. Leave this program to those with an alienware system or equivalent.

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