I've done my own search of course and I found "no it cannot" answers. This makes me wary, but the answers are all from 2011 or older. I found some newer answers, around 2013, saying that Compressor could MAKE .ts MPEG2 files, but nothing about importing. Apple's specification page for Compressor is not clear at all. It mentions MPEG2, but many MPEG2 applications will not handle transport streams. So does anyone know definitively if the current version of Compressor can use an MPEG2 transport stream (.ts) file as source?