MPEG-2 Demultiplexer
| Microsoft DirectShow 9.0 |
MPEG-2 Demultiplexer
The MPEG-2 Demultiplexer ("demux") filter demultiplexes MPEG-2 transport and program streams that are delivered in push-mode. In Microsoft® Windows® XP, this filter also supports program streams in pull mode (file playback). On earlier platforms, use the MPEG-2 Splitter filter for program streams in pull mode. This filter can be used in any type of filter graph, including a BDA digital TV filter graph.
- **Note **The MPEG-2 Demultiplexer does not support frame-accurate seeking.
| Filter Interfaces | IBaseFilter, ISpecifyPropertyPages
Push mode only: IAMFilterMiscFlags, IMpeg2Demultiplexer, IReferenceClock |
| Input Pin Media Types | Major type: MEDIATYPE_STREAM
Subtype:
For more information, see MPEG-2 Demultiplexer Media Types. |
| Input Pin Interfaces | IMemInputPin, IPin, IQualityControl |
| Output Pin Media Types | Audio and video elementary streams must have a major type of MEDIATYPE_Audio or MEDIATYPE_Video.
For more information, see MPEG-2 Demultiplexer Media Types. |
| Output Pin Interfaces | IPin, IQualityControl
Push mode only: IAMPushSource, IMPEG2PIDMap, IMPEG2StreamIdMap Pull mode only: IMediaSeeking |
| Filter CLSID | CLSID_MPEG2Demultiplexer |
| Property Page CLSID | Available for testing only. Use the ISpecifyPropertyPages interface to access the property pages |
| Executable | mpg2splt.ax |
| Merit | MERIT_NORMAL |
| Filter Category | CLSID_LegacyAmFilterCategory |
Remarks
To output audio and video elementary streams, the demux must receive the PCR and SCR streams. On the input side, this means a transport stream must contain the PAT and PMT tables that define the PID for the PCR stream; and program streams must contain at least one pack header.
See Also