This thread is for extracting ITTS data (and audio) from S/PDIF (coaxial or optical does not really matter as converters do exist) as one part of an ITTS box replacement to make it usable somehow. If I don’t have any working 1st or 2nd gen DCC recorders, I can’t work on this part, as 3rd gen DCC recorders don’t output ITTS packets via S/PDIF. S/PDIF is only used for pure audio nowadays; that’s why extracting data from it is very uncommon.
Here you can find the other part that displays the so-called ITTS packets that each contain one line of characters including formatting (except for some even more crazy other logic that was likely never supported by anything): ITTS (DCC text) reimplementation