M4V to MKV-Remux iTunes M4V videos to MKV format

Question: There's lots of threads on how to remux MKVs into M4Vs, but is there a quick, easy and prefferably free way to remux a M4V to MKV?



I have a purchased (M4V) film which for some strange reason came in two parts and I'd like to stitch them into a single file. I've done this successfully in the past with MKVs using mkvtoolnix, but as I'd ripped all the bits myself, I had easy access to the original MKVs. In this case, I don't...