Re:BBC Subtitle Guidelines
by kvm000 on Friday December 23, 2022 @11:43AM
(#34107786)
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].
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
[2] https://www.freetv.com.au/wp-content/uploads/2019/08/OP-42-C...
[3] https://xkcd.com/927