## MMPM/2 Device Driver Reference

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### VCAI_TUNERCHANNEL (69h) - Set/Query Tuner Channel

Category:
VIDEO_IOCTL_CAT (140)
Function:
VCAI_TUNERCHANNEL (69h)
Description:
Set/Query Tuner Channel

Select an item:

    Description
    Parameter Packet Format
    Data Packet Format
    Returns

This IOCtl is used to change channel/frequency on the TV tuner or to query the correct tuner frequency. If the device support TV tuner functions, the HasTuner flag should be set to 1 in the VCADEVINFO structure.