Ok I had better start by saying this is not 100% on topic for this forum, other then the fact I watch the files on my myth box! However I'm at a loss on this one and as I've had so helpful answers from here in the past thought I would make a post.
Basically I recorded Doctor Who off BBC-HD earlier today and want to remux this into to a mkv container with no recompression.
I used tsmuxer (on windows) to demux the streams and then tried mkvmerge (the windows version again but there is a build of this in the ubuntu repository as well) and other software including ffmpeg (via a front-end) but cannot get a mkv file that works on myth, vlc or anything else correctly.
What is confusing is that I managed to remux the last episode of Doctor Who shown earlier in the year, and I'm sure I used the same method.
Any help would be appreciated.