LEAD MPEG2 Program Demultiplexer

The LEAD MPEG2 Program Demultiplexer is a DirectShowÒ filter that can parse the following types of streams:

  1. MPEG-2 Program specified in ISO/IEC 13818-1

  2. MPEG-1 System specified in ISO/IEC 11172-1

  3. Elementary stream data (also known as raw video or raw audio data)

The first two formats are multiplexed formats, and they can contain video, audio and private data streams. The video compression can be MPEG1 (ISO/IEC 11172-2), MPEG2 (ISO/IEC 13818-2), MPEG4 (ISO/IEC 14496-2) or H.264 (ISO/IEC 14496-10). The audio compression can be MPEG1 (ISO/IEC 11172-3), AC3, LPCM or AAC.

This filter does NOT support MPEG-2 Transport streams defined in ISO/IEC 13818-1. This type of file/stream is supported in the LEAD MPEG2 Transport Demultiplexer. This filter does NOT support private data. For private data support, please use the LEAD MPEG2 Transport Demultiplexer.

The demultiplexer works in pull mode, so it will connect to source filters that expose the IAsyncReader interface. IAsyncReader is a standard Microsoft interface. Please consult the Microsoft documentation for more information on IAsyncReader.

Technical details for the demultiplexer are provided in the following table:

 

Filter Interfaces

ILMMpgDmx

Interface ID

IID_ILMMpgDmx

Input Media Types

Type
MEDIATYPE_Stream

Subtypes
MEDIASUBTYPE_NULL
MEDIASUBTYPE_MPEG2_PROGRAM MEDIASUBTYPE_MPEG1Video
MEDIASUBTYPE_MPEG1System
MEDIASUBTYPE_UDPStream
MEDIASUBTYPE_MPEG1Audio

Output Media Types

Depends on the type of data being parsed. The most common output media types are:

Type: MEDIATYPE_Video

Subtypes:
MEDIASUBTYPE_MPEG2_VIDEO
MEDIASUBTYPE_L264

 

Type:
MEDIATYPE_Audio

Subtypes:
MEDIASUBTYPE_MPEG1AudioPayload
MEDIASUBTYPE_MPEGLAYER3
MEDIASUBTYPE_DOLBY_AC3
MEDIASUBTYPE_DVD_LPCM_AUDIO
MEDIASUBTYPE_AAC

Filter CLSID

CLSID_LMMpgDmxP

Property Page CLSID

N/A

Executable

LMMpgDmxP.dll, DSKernel2.dll

Filter category

CLSID_LegacyAmFilterCategory

Header

ILMMpgDmxP.h
ILMMpgDmxCommon.h