Microsoft MPEG-2 Video Decoder
Applies to: desktop apps only
This filter decodes MPEG-1, MPEG-2, H.264 video.
Note Decoding of H.264 video requires Windows 7.
Note This filter is not supported on IA-64-based platforms.
In the registry, the friendly name of this filter is "Microsoft DTV-DVD Video Decoder".
| Filter Information | |
|---|---|
| Filter Interfaces | |
| Input Pin Media Types | Video input pin:
Subpicture input pin:
Starting in Windows 7, the video input pin also supports the following input types:
See H.264 Video Types for more information. The input media type can change dynamically between MPEG2 and H.264 types. |
| Input Pin Interfaces | |
| Output Pin Media Types | Video output pin:
Line-21 output pin:
Subpicture output pin:
|
| Output Pin Interfaces |
IAMVideoAcceleratorNotify (video output pin only) |
| Filter CLSID | CLSID_CMPEG2VidDecoderDS (defined in wmcodecdsp.h) |
| Executable | msmpeg2vdec.dll |
| Merit | MERIT_NORMAL - 1 |
| Filter Category | CLSID_LegacyAmFilterCategory |
Remarks
This filter has two input pins and three output pins.
Input pins:
- Video input
- Subpicture input
Output pins:
- Video output
- Line-21 output
- Subpicture output
The filter does not create the subpicture output pin unless the video input pin is connected with a MEDIATYPE_DVD_ENCRYPTED_PACK media type.
MPEG-1/2 Support
For MPEG-1 and MPEG-2, the decoder supports the following formats:
| Profiles/Levels |
Any combination of the following profiles and levels:
|
| Chroma Formats | 4:2:0 chroma |
| Maximum Resolution | 1920 × 1088 pixels |
| DXVA | The decoder supports DirectX Video Acceleration (DXVA) version 1 and version 2. |
The decoder does not support scalable bitstreams. The input must be an elementary video stream.
The decoder does not support 4:2:2 chroma formats.
H.264 Support
For H.264, the decoder supports the following formats:
| Profiles/Levels | Baseline, Main, and High profiles, up to level 5.1. (See ITU-T H.264 specification for details.) |
| Chroma Formats | 4:2:0 chroma or monochrome |
| Minimum Resolution | 48 × 48 pixels |
| Maximum Resolution | 1920 × 1088 pixels |
| DXVA | The decoder supports DXVA version 2, but not DXVA version 1. DXVA decoding is supported only for Main-compatible Baseline, Main, and High profile bitstreams. (Main-compatible Baseline bitstreams are defined as profile_idc=66 and constrained_set1_flag=1.) |
The decoder does not support Film Grain Technology.
For information about the H.264 media types, see H.264 Video Types.
Codec Properties
The input pins support the following property sets through IKsPropertySet:
- DVD Copy Protection Property Set
- DVD Subpicture Property Set (subpicture pin only)
The input pins support the following properties through ICodecAPI:
| Property | Requires |
|---|---|
| AVDecCommonInputFormat | Windows Vista |
| AVDecVideoInputScanType | Windows Vista |
| AVDecVideoPixelAspectRatio | Windows Vista |
The filter supports the following properties through ICodecAPI:
| Property | Requires |
|---|---|
| AVDecMmcssClass | Windows Vista |
| AVDecVideoAcceleration_H264 | Windows 7 |
| AVDecVideoAcceleration_MPEG2 | Windows 7 |
| AVDecVideoDropPicWithMissingRef | Windows 7 |
| AVDecVideoFastDecodeMode | Windows 7 |
| AVDecVideoImageSize | Windows 7 |
| AVDecVideoSoftwareDeinterlaceMode | Windows 7 |
| AVDecVideoThumbnailGenerationMode | Windows 7 |
Requirements
|
Minimum supported client | Windows Vista Home Premium, Windows Vista Ultimate, Windows 7 Home Premium, Windows 7 Business, Windows 7 Enterprise, Windows 7 Ultimate |
|---|---|
|
Minimum supported server | None supported |
|
Header |
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See also
Send comments about this topic to Microsoft
Build date: 3/6/2012
- 2/15/2012
- Robcris
- 11/12/2011
- uninspired
- 9/21/2011
- Roman Ryltsov
- 1/21/2011
- dshowminion
- 5/29/2011
- Motoyoshi Kawai
