References ▼
The LEAD MPEG2 Transport Demultiplexer is a DirectShow filter that can parse the following types of streams:
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), H.264 (ISO/IEC 14496-10) or H.265 (ISO/IEC 23008-2). The audio compression can be MPEG1 (ISO/IEC 11172-3), AC3, LPCM or AAC.
The private data can be retrieved using the ILMMpgDmxCallback interface. The filter will create private data pins, but it is not necessary to render these pins in order to programmatically retrieve the private data packets. The filter also provides the ILMKlvParser interface, which can be used to parse KLV private data conforming to SMPTE 336M-2001. The demultiplexer works in pull mode and will connect to source filters that expose the IAsyncReader interface. The MPEG2 Transport Demultiplexer can play live MPEG2 Transport streams in pull mode (with DVR functionality) or in push mode (without DVR).
Under Windows 7, Media Player uses Windows Media Foundation modules to play MPEG2 Transport files. By default, Media Player will not use LEAD MPEG2 Transport Demultiplexer to play MPEG-2 Transport files. For troubleshooting in Windows 7, see Playing Media Player Files in Windows 7.
Technical details for the demultiplexer are provided in the following table:
| Component | Description |
|---|---|
| Filter Interfaces | ILMMpgDmx |
| ILMKlvParser | |
| Interface ID | IID_ILMMpgDmx |
| 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 | |
| MEDIASUBTYPE_h264 | |
| MEDIASUBTYPE_h265 | |
| MEDIASUBTYPE_MP4V | |
| Type: | |
| MEDIATYPE_Audio | |
| Subtype: | |
| MEDIASUBTYPE_MPEG1AudioPayload | |
| MEDIASUBTYPE_MPEGLAYER3 | |
| MEDIASUBTYPE_DOLBY_AC3 | |
| MEDIASUBTYPE_DVD_LPCM_AUDIO | |
| MEDIASUBTYPE_AAC | |
| MEDIASUBTYPE_SAMR (only for raw files) | |
| Type: | |
| MEDIATYPE_METADATA | |
| Subtypes: | |
| MEDIASUBTYPE_KLVA | |
| MEDIASUBTYPE_PrivateData | |
| Filter CLSID | CLSID_LMMpgDmxT |
| Property Page CLSID | CLSID_LMMpgDmxTPropertyPage (only for files with more than one program) |
| Executable | LMMpgDmxT.dll, DSKernel2.dll |
| Filter category | CLSID_LegacyAmFilterCategory |
| Header | ILMMpgDmxT.h and ILMMpgDmxCommon.h |
This filter is included as part of LEADTOOLS MPEG-2 Transport Module.
Win32, x64, Mobile.