I am also really interested in something like this.
I tried adding my TVH recording folder to Kodi as a TV Library source and changed the recording format to that suggested above.
Unfortunately, I am still finding that a few recordings never show up for various reasons.
I am using the tv_grab_zz_sdjson_sqlite grabber for my EPG, so not only do I get full and accurate show information, including Season and Episode, but also a .jpg for the show.
Is there any way that I can take the EPG information that TVH stores with each recording and create a .nfo file with it?