MediaMessage.Buffering (gb.media)
Const Buffering As Integer = 32 ' &H20
Constant for a buffering message type.
This message means that the pipeline is buffering.
When the application receives a buffering message in the PLAYING state for a non-live pipeline it must PAUSE the pipeline until the buffering completes, when the percentage field in the message is 100%. For live pipelines, no action must be performed and the buffering percentage can be used to inform the user about the progress.