As with ffmpeg’s mpegtsenc underlying libav has supported both SDT and NIT tables for DVB transmission. GStreamer’s mpeg2 TS mpegtsmux is lacking of to date. Let’s change this.
From SO/IEC 13818-1 MPEG-2
The SDT (Service Description Table) is mandatory under the DVB and DVB-T/T2/S/S2/C broadcasting specifications, but not strictly mandatory under the base ISO/IEC 13818-1 MPEG-2 Systems spec.
I’d like to add both SDT and NIT tables to mpegtsmux plugin to improve DVB transport stream compliance for transmission systems such as DVB-T, DVB-S in the first instance.
Then work towards:-
- Adding EIT for (EPG) which will also need to include the TDT/TOT table for time scheduling and EPG to process at the TV and STB endpoints.
- Proper multiplexing of Teletext as its properly supported to the extend of subtitles is.
- To add the needed addition code, I’d assume as with sub titles, they’ll need to be a plugin developed to pre-process the Teletext PES to satisfy pre TS requirements for multiplexing into mpegtsmux including the updating of both PMT and SDT tables with the Teletext service?
Happy to discuss out-side of discourse, if anyone like to discuss on how to add the necessary tables and Teletext. 