Dynamic transcoding feature

[simoncn]

It isn't possible for MinimStreamer to use different transcoding settings based on renderer capabilities. This is because 1) there is no mechanism in UPnP for a server to know anything about the capabilities of the renderer that is requesting the stream and 2) UPnP requires the properties of the stream to be sent to the control point in advance before the control point has selected a renderer to play the stream.