I've tried to convert a video and I found that the H264 built-in profile encoded file have no hardware accelerated support when play with MPC-BE, and the advance option only have quality. Also the "try maximum compatibility" always fail and ask me to choose the file again, rather annoying. If possible grey out the one not supported so no more "ask and error", and if error occured, it's reasonable to stick with the previous choice of file than ask again, if I need to choose anohter file I'll remove by myself.