Yeah the problem is that PowerDVD can happily decode x264, but it doesn't natively support the MKV container. It will open x264 in an AVI container though. x264 in an MKV container would work if Haali properly supported handoff to PowerDVD, but it doesn't, so until Haali gets an update or PowerDVD gets a native MKV splitter, you're screwed
