Yeah, I saw the progress bar cosmetic issue. It only seems to affect the DirectShow engine (only used in the Legacy build, so it doesn't affect the other builds using the wmf backend). As far as which plugins were included, I let the new windeployqt tool make the decisions for me. windeployqt is going to be incorporated into the official build process so we should be good to go there. No more guessing about what needs to be included with the package.
