One way to discover the "hidden" vpid and apid:
Computer analysis with a DVB card and appropriate software...easy to do.
The first 32 pids are reserved for Transport stream definition,can't use any of those for video or audio or conditional access or other.
This mean all 32 are predefined,as was said
There is a limit of PIDs in the stream = 8191.
One of the most complete analyzers is DVBSNOOP (linux,free)
TSReader or Transedit also works fine..as well as DVBStreamExplorer...DVBSNOOP also seems to give more details than TSREADER, but is MUCH less user friendly. Trying the free version of TSREADER first, before trying other software. TSREADER is a great teaching tool, and it's not easy to use software like dvbsnoop withouth having the knowledge you get from using TSREADER.
Hopefully someone with DVB Card and Software can check if these channels are still available and what the new PIDs are. :thum:
(*info compiled from other sites)