I was talking about the older PAL-based teletext as well - but you're right, I understand it was different in terms of equipment originally with the full-screen

I was talking about the older PAL-based teletext as well - but you're right, I understand it was different in terms of equipment originally with the full-screen data feeds. Separate from DVB, the old PAL OP42/47 teletext payload gets inserted into the MPEG-TS using SMPTE 2038[1] then when decoded, it would go into regular ancillary data of the uncompressed stream per ITU-R BT.1120-7[2]. The broadcast industry really loves standards[3]. [1] https://ieeexplore.ieee.org/document/7290549 https://ieeexplore.ieee.org/document/7290549 [2] https://www.freetv.com.au/wp-content/uploads/2019/08/OP-42-Closed-Captioning-Issue-5-May-2018.pdf https://www.freetv.com.au/wp-content/uploads/2019/08/OP-42-C... [3] https://xkcd.com/927 https://xkcd.com/927