Years ago, I was using the 'tv_grab_file' option (which may have been misspelled 'tv_grag_file'. It used a service called zap2xml.pl, if I recall correctly. Anyway, this is apparently now defunct and when I've tried to configure any of the XMLTV grabbers that tvheadend offers out of the box, they prompt me to go create an account online, which asks for payment.
Is there still a method for obtaining non-OTA EPG data that doesn't require a paid account?