cybrsage said:

I get an error when I try to play this file and it will not play. When I try to use tsMuxeR to convert it to a BluRay. I get "Invalid H264 NAL Unit Size; NAL Unit Truncated" error.

I downloaded it from MySpleen.

The NAL error is due to header compression that newer versions of MKVtool kit thus mkvmerge now uses by default.

You simply need to remove it.

Here is how: In mkvmerge, under options [file->options] on the mmg tab look for "Disable header removal compression for audio and video tracks by default" and check the box. Then in main window add your .mkv and "start muxing" it will be somewhat fast as in this case it will just be changing the header not really doing a mux Here is the commandline method: mkvmerge --compression 0:none --compression 1:none -o "path and file name of new .mkv aka output file" "path and file name of the mkv file to be processed aka input file"

BTW: I use mkvmerge 4.70 besides it being rock solid stable, mkv's made from later versions will not fast forward >> or reverse properly << on my Blu-Ray player.