Terratec Home Cinema 4.19: recording of subtitles

Release notes of Terratec Home Cinema 4.19 (a 93 kB PDF file – WTF for a PDF?) promises the program has “Recording of subtitles and teletext in .TS files”! I’m posting this before testing it since downloading the update seems to take forever to finish. What are they serving these files with, a 28 kbps modem?

I hope this is going to work with my Cinergy 1200 DVB-C. It should, according to Terratec.