|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.
|0||The video is from a broadcast source.|
|1||The video is from a tape source.|
Returns an HRESULT value. Possible values include the following.
|E_PROP_ID_UNSUPPORTED||The device does not support this method.|
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.