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I should have maybe clarified that it was killed off here in the UK, I will amend it.

PodgieTar 3y ago
Is that true? I thought the protests in 2020 stopped the shut off? Teletext and BBC Red Button are essentially the same, just with quite a few lick of paints. I think you can still access Red Button to this day?
- jayflux 3y ago
  They’re not the same and I don’t think they’ve ever been synonymous with each other (or at least not by people who work in the Broadcasting industry). Red Button is the service that replaced teletext/ceefax in 2012. Teletext was an analogue service, Red button was a whole new digital service offering similar information, it’s entirely different infrastructure underneath, it’s not just a “lick of paint”.
  - deleted 3y ago
    [deleted]
  - PodgieTar 3y ago
    You're right. My bad. I worked on a modernisation project for the DVB version of this in 2018. Internally we used to refer to it as Teletext, hence my confusion.
  - 15457345234 3y ago
    > Teletext was an analogue service Teletext was a _digital_ service provided over an _analogue_ bearer - the modulation of the signal is continuous, not discrete.
- Symbiote 3y ago
  "Teletext" in this context is a signalling protocol for transmitting text content over PAL TV, for decoding by an appropriate receiver. 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.
  - PodgieTar 3y ago
    Ah, my apologies then. My confusion was that I didn't think there was a difference between the current mechanism and the old one.
  - phh 3y ago
    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
  - Doctor_Fegg 3y ago
    The ITV/C4 service was originally Oracle; this was later replaced by “Teletext Ltd”. https://en.m.wikipedia.org/wiki/ORACLE_(teletext) https://en.m.wikipedia.org/wiki/ORACLE_(teletext)
- razakel 3y ago
  Teletext/Ceefax has been dead since the analog switch-off in 2012. Red Button uses MHEG-5.

Is that true? I thought the protests in 2020 stopped the shut off? Teletext and BBC Red Button are essentially the same, just with quite a few lick of paints. I think you can still access Red Button to this day?

jayflux 3y ago
They’re not the same and I don’t think they’ve ever been synonymous with each other (or at least not by people who work in the Broadcasting industry). Red Button is the service that replaced teletext/ceefax in 2012. Teletext was an analogue service, Red button was a whole new digital service offering similar information, it’s entirely different infrastructure underneath, it’s not just a “lick of paint”.
- deleted 3y ago
  [deleted]
- PodgieTar 3y ago
  You're right. My bad. I worked on a modernisation project for the DVB version of this in 2018. Internally we used to refer to it as Teletext, hence my confusion.
- 15457345234 3y ago
  > Teletext was an analogue service Teletext was a _digital_ service provided over an _analogue_ bearer - the modulation of the signal is continuous, not discrete.
Symbiote 3y ago
"Teletext" in this context is a signalling protocol for transmitting text content over PAL TV, for decoding by an appropriate receiver. 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.
- PodgieTar 3y ago
  Ah, my apologies then. My confusion was that I didn't think there was a difference between the current mechanism and the old one.
- phh 3y ago
  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
- Doctor_Fegg 3y ago
  The ITV/C4 service was originally Oracle; this was later replaced by “Teletext Ltd”. https://en.m.wikipedia.org/wiki/ORACLE_(teletext) https://en.m.wikipedia.org/wiki/ORACLE_(teletext)
razakel 3y ago
Teletext/Ceefax has been dead since the analog switch-off in 2012. Red Button uses MHEG-5.