BD Ripper (3D Plus) Why fixed bitrate?

[Locutus2k]

I wonder why there is no option for a variable bit-rate when encoding a bluray to mkv.
As a matter of fact VBR gives best results in both video quality and file dimensions.
Is it possible to have this function? Will it be available in future releases?
Thanks

[Guest]

read this thread

http://forum.dvdfab.com/showthread.php?t=13674