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