After having tested several revs, I have come to the conclusion that ffdshow_rev3945_20110719_xhmikosr.exe is the first rev that misses the OSD item "input colorspace". With ffdshow_rev3940_20110714_clsid.exe you can still select the item, so somewhere between rev3940 and rev3945 this item went missing and I have a hunch http://ffdshow-tryout.svn.sourceforge.net/viewvc/ffdshow-tryout/?pathrev=3943 has something to do with it.
Could you please bring it back?
Can't be fixed without rewriting large parts of code. So unlikely it will get added back.
That's a real pitty! Too bad.
Thanks though.