Microsoft DirectX 9.0


The put_VCRHorizontalLocking method specifies whether the video is a tape source or a broadcast source.


HRESULT put_VCRHorizontalLocking(
  long lVCRHorizontalLocking



[in]  Specifies one of the following values.

Value Description
0 The video is from a broadcast source.
1 The video is from a tape source.

Return Values

Returns an HRESULT value. Possible values include the following.

Value Description
E_PROP_ID_UNSUPPORTED The device does not support this method.
S_OK Success.


The timing accuracy of synchronization pulses is typically poorer from a tape source than from a broadcast source. Setting the value to 1 tells the decoder to relax its standards, which leads to a better chance of maintaining sync.

See Also