Am 27.12.2014 um 11:42 schrieb Klaus Schmidinger:
Does anyone know if these extra PID's are definitely required? Maybe only for DVB-S/2 ?
Sorry, I don't know anything about that.
I programmed/ported a VDR Version to Topfield in 2010[*]. At that time Freesat was broadcasting their EPG using 3841/3842. The Topfield did not have a hardware capability to filter these, so it was necessary to write a stream parser for a recorded TS. In addition on a standard video stream Freesat EPG came in extremely slow. They had a specific radio transponder which was as well dedicated to data broadcasts (11426MHz/27500/H). Performing a recording on PID 3002/3003 revealed the full Freesat EPG extremely fast. When I backported the Topfield stuff into the VDR patch, the only piece of work done has been the conversion of the Huffman tables from file read into a header data structure to make it a bit more efficient and eliminate the need for dynamic memory.
That has been the history.
And the situation today? I dont think they changed 3841/3842 as this might be a problem for installed reception equipment. But somebody would have to do a bit of dvbsnooping to be shure.
So my guess is that it cannot be changed for DVB-S/S2 reception.