Almost 500,000 football fans across the UK tuned in to S4C's broadcast of the rescheduled FA Cup third round tie.
S4C's Sgorio team will be back to provide live coverage of the replay in the FA Cup competition, sponsored by Eon.
Presenter Gareth Roberts will be joined by ex-Wales international John Hartson and the FAW technical director Osian Roberts in the studio, with Nic Parry and Malcolm Allen providing expert commentary on the match.
The coverage includes English language subtitles and the match will also be available to watch live on the S4C website, s4c.co.uk
S4C is available on all platforms in Wales and on Sky 134 and Freesat 120 in England , Scotland and Northern Ireland .
Cardiff City v Bristol City: FA Cup
Tuesday, 19 January, from 7.35pm
English subtitles available