TV tuner cards allow a desktop PC to receive and display broadcast television signals. TUNER (located in \TOOLKIT\SAMPLES\MM\TUNER), provides an example of how to use the media control interface (MCI) string interface to control a tuner card.

When the application is running, the display window can be sized and a TV channel can be selected. The channel can be selected through up/down buttons or a text entry field displayed at the bottom of the window.

Hardware requirements:

• Computer capable of running OS/2 Warp
  
• TV tuner card (such as the WinTV Basic)

Software requirements:

• OS/2 Warp 
  Multimedia support
  
  Appropriate drivers for installed tuner card

  A TV tuner card is handled as a digital video device by the multimedia subsystem. A typical system has one or more digital video devices, with digitalvideo01 assigned to software motion video. By default this sample opens the digitalvideo02 device. If the tuner card is not assigned to digital video 2 an alternate device ordinal must be provided at the command line with the following format:

    /d=digitalvideoxx

  where xx is a two digit number, padded on the left with zero.

  For example:

    /d=digitalvideo03
  

  Most TV tuner cards, such as the Hauppauge WinTV card, support several video sources. The connector number that corresponds to the tuner video source is dependent on the hardware and might not be the same for each tuner card. The connector number is not changed by this sample. Instead, it uses the default connector number that is set by the Multimedia Setup program.

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