FWIW you can still get Teletext over MPEG TS (DVB or IPTV), it's just already de-modulated, but even error correction bits are still there (and are useless).
In France most IPTV operators still use teletext for live subtitling because it eats much less bandwidth than dvbsub
Ah, my apologies then. My confusion was that I didn't think there was a difference between the current mechanism and the old one.
Re:Teletext on a BBC Computer in 2024
by Doctor_Fegg on Tuesday January 30, 2024 @02:28PM
(#39194498)
The ITV/C4 service was originally Oracle; this was later replaced by “Teletext Ltd”.
The BBC's service was branded "Ceefax", ITV and Channel 4 branded theirs "Teletext".
The current 'red button' service is a completely different protocol running on DVB (Digital Video Broadcast, i.e. digital TV). Text packets are added to the MPEG-2 stream.