Can't remember demuxer name -- something like "tsmuxer"

[mmace]

I've recently got a new PC, on my old one I had some software that could demux mkv, m2ts etc x264 files, it's name was similar to tsmuxer but I can't for the life of me remember it, can anyone help?
I have a few m2ts files with x264 video and AC3 audio that I need the elementary streams from

[nm]

And tsMuxeR doesn't work? Then there are TsRemux and eac3to.

[mmace]

duh, course it does, I'm used to using it for remuxing I didn't even notice the other setting, I said it was a stupid question!
<hangs head in shame>