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LEAD MPEG2 Transport Media Source

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The LEAD MPEG2 Transport Media Source is a MediaFoundation transform that can parse the following types of streams:

1.       MPEG-2 Transport specified in ISO/IEC 13818-1
2.       MPEG-2 Program specified in ISO/IEC 13818-1
3.       MPEG-1 System specified in ISO/IEC 11172-1
4.       Elementary stream data (also know 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 13818-1), 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.

The private data can be retrieved using the ILMFMpgSourceCallback interface. The transform will create private data streams, but it is not necessary to render these streams in order to programmatically retrieve the private data packets. The transform also provides the ILMKlvParser interface, which can be used to parse KLV private data conforming to SMPTE 336M-2001.

 

Technical details for the Media Source are provided in the following table:

 

Transform Interfaces

ILMFMpgSource
ILMKlvParser

Interface ID

IID_ILMFMpgSource
IID_ILMKlvParser

Input Media Types

Type:
MEDIATYPE_Stream

Subtypes:
MEDIASUBTYPE_NULL
MEDIASUBTYPE_MPEG2_PROGRAM
MEDIASUBTYPE_MPEG1Video
MEDIASUBTYPE_MPEG1System
MEDIASUBTYPE_UDPStream
MEDIASUBTYPE_MPEG1Audio
MEDIASUBTYPE_MPEG2_TRANSPORT

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

Subtype:
MEDIASUBTYPE_MPEG1AudioPayload
MEDIASUBTYPE_MPEGLAYER3
MEDIASUBTYPE_DOLBY_AC3
MEDIASUBTYPE_DVD_LPCM_AUDIO
MEDIASUBTYPE_AAC

Type:
MEDIATYPE_METADATA

Subtypes:
MEDIASUBTYPE_KLVA
MEDIASUBTYPE_PrivateData

Media Source ByteStream Handler CLSID

CLSID_MFMPEG2ByteStreamHandlerT

Property Page CLSID

N/A

Executable

LMMFMpgSourceT.dll

Header

ILMFMpgSourceT.h
ILMFMpgSourceCommon.h

Platforms

Win 32, x64

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