Command line quoting broken
NB: More details given in the forum in http://forum.videolan.org/viewtopic.php?f=14&t=47823
A DirectShow device has a slash in its name: e-g "4-1010 7/8ch". It opens in 0.9.0-test1 with the GUI. But when one tries to do the same on the command line it's broken.
The problem doesn't occur with the stable release 0.8.6h.