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The Reader object is used to read Windows Media files. The reader can read MPEG-4 versions 1, 2 and 3.
The Reader object supports the following interfaces.
| Interface | Description |
| IWMReader | Used to open, close, start, pause, resume, and unlock the reader, stop reading files, and get and set the output properties. |
| IWMReaderAdvanced | Used to utilize advanced features of the reader, such as specifying a user-driven clock, read buffers, return statistics, receive selection callbacks, and more. |
| IWMReaderCallback | Callback methods for the Start and Open methods of IWMReader. |
| IWMReaderCallbackAdvanced | Callback methods for the IWMReaderAdvanced methods. |
| IWMReaderStreamClock | Used to set and cancel timers on stream clocks, as well as to retrieve the current value of the stream clock. |
See Also
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