media-video/kdenlive could make use of the following if detected at runtime: virtual/cdrtools media-video/dvdauthor media-video/dvgrab media-video/recordmydesktop You can check this in Kdelive by choosing Settings -> Run Config Wizard. The above applications are listed in 5th window. I'd be nice if Kdenlive depended on these packages through USE flags.
nope, USE flags are mostly for deps that actually change the outcome of the emerge (of kdenlive). if the GUI can gracefully handle the runtime-only deps, like kdenlive does, USE flags have no place here.
OK, thanks for explanation.