[linux-dvb] DVB-T South Africa
patrick.boettcher at desy.de
Mon May 12 14:22:20 CEST 2008
I'm now 100% sure that this is a DVB-H transport stream.
the appearing/disappearing TS-PIDs in the dvbtraffic are indicating that
timeslicing is active.
The dvbsnoop clearly says that there are only MPE-sections which is
another indicator for that.
I will commit my two little, proof-of-concept-like, tools soon and tell
you where to find and how to try it.
On Mon, 12 May 2008, Rogan Dawes wrote:
> Patrick Boettcher wrote:
>> Hi Rogan,
>> your dvbtraffic output raises a question: What happens when you run it for
>> several seconds ?
>> Are the PIDs always the same? Especially the one with the higher bitrate?
>> I'm asking because if that is the case, it could be that this is a DVB-H
>> I have some tools (which I did not commit yet) which "scan", in a very
>> basic way, for DVB-H services, maybe this could help you.
>> Before that you can try to use dvbsnoop on PID 0x00 and 0x10 to see
>> whether it signals a INT-section.
>> I could also be a pure radio transmission, but in that case scan should
>> detect those channels.
> Hi Patrick,
> Actually, I think you may well be right. Our cell networks are trialling (or
> even deploying) DVB-H, and the content is provided by MultiChoice.
> Unfortunately (for me) that content is almost definitely encrypted.
> I guess I might have to retry w_scan to see if it picks up any other
> frequencies that might have the real DVB-T signals on them. And maybe improve
> my antennae - I am currently using a Technisat DigiFlex TT2, which is just
> sitting on my desk.
> I am attaching the results of "dvbsnoop -s pidscan", as well as a longer
> capture of dvbtraffic (using "dvbtraffic | tee dvbtraffic.txt", then Ctrl-C
> after 6-7 seconds).
> Thanks for your help.
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