One thing that I noticed, is that Isobuster does not seem to work with ISOs dumped from BR+ protected discs. After I exported the m2ts files out of the ISO w/ Isobuster, Tsmuxer would not load them (unable to determine stream type error).
To resolve this, I loaded the ISO file in a Nero 8 Virtual Drive. I then used ANYDVD HD's "rip DVD" feature to "fix" the m2ts files. After that, Tsmuxer would open the files, and I could follow the rest of your guide.

*Off topic* Can I ask....what is your favorite video encoder to create h264 compressed video w/ MKV container? Can you point me to a tutorial? Thanks






