Trying to join .mts files

[imrealdumb]

Got some files a buddy filmed on his Panasonic camcorder. They are the original .mts files from his camcorder, but I can't figure out how to join them into one file.

I tried tsmuxer, but if I try joining a few or all of them together, something weird happens and the file is only 2:47 long.

Is there a good program that will solve my problem? I don't need anything fancy - just a simple joined file.

Thanks for any advice out there.

[videobruger]

Perhaps try to append in MKVToolNix GUI