AlignmentX Property (VideoBrush)
Gets or sets the horizontal alignment of the video from the VideoBrush.
<object AlignmentX="AlignmentX" .../>
value = object.AlignmentX
object.AlignmentX = value
A value that specifies the horizontal position of the video when applied to the brush.
This property is read/write. The default value is Center.
In addition to AlignmentX and AlignmentY, Stretch also affects which portion of the source will apply to the target region.