Media.SeekSnapNearest (gb.media)
Const SeekSnapNearest As Integer = 96 ' &H60
Go to a position near the requested position. With the 
SeekKeyUnit flag, it means the keyframe closest to the requested position. If both keyframes are at an equal distance, behaves like 
SeekSnapBefore.
This flag is an option for the 
MediaPipeline.Seek method.