Manu Abraham wrote: > frankio wrote: >> Manu Abraham wrote: >>> Francesco Schiavarelli wrote: >>> >>>> Johannes Stezenbach wrote: >>>> >>>>> On Sat, Nov 03, 2007, Manu Abraham wrote: >>>>> >>>>>> If you see H.2 and H.3, the difference is between CCM and VCM >>>>>> (Note: that both are cases of multiple "TS's") >>>>>> >>>>>> H.2 (CCM) is applicable for DVB-T muxes. Here there is a HP/LP stream >>>>>> selection in some fashion combined with the merger/slicer where >>>>>> stream id is used. >>>>> What makes you think there is HP/LP involved? All H.2 says >>>>> is that two DVB-T streams are transmitted using one >>>>> DVB-S2 transponder to a DVB-T transmitter. The DVB-T transmitter >>>>> could then transmit them on two different frequencies in >>>>> non-hierarchical mode. >>>>> >>>>> (Indeed H.2 says "two DTT MUXes at 24 Mbit/s each" indicating >>>>> they are not hierarchical because you can't get that >>>>> bitrate in DVB-T hierarchical mode. But even if it were DVB-T >>>>> hierarchical mode it has nothing to do with DVB-S2 backwards >>>>> compatible mode hierarchical modulation.) >>>>> >>>>> >>>> I agree with you, Johannes. >>>> There is no evidence of hierarchical modulation, nevertheless the two >>>> streams I was looking at had the same channel protection that is no >>>> HP/LP, and I was told it was DVB-S2 CCM. >>>> >>>> When the transponder will be up again I'll be able to do more tests. >>>> >>> Yeah, looks more like that, will have a patch soon to do some tests >>> for it. >>> STM's comments confirm that. >>> >>> Manu >>> >>> >> Now the beam is up on 13.0E 11373 H 27500 8PSK 2/3 >> It is made up of 2 DTT muxes (no HP/LP) >> ISI1 16QAM 1/2 1/4 9.953 Mbps >> ISI2 64QAM 5/6 1/4 24.882 Mbps >> >> Unfortunately I don't know how long it will last, so let the tests >> begin! :-) >> I'll wait for the patch. >> > > In the meantime, can you please pull a copy of the multiproto tree > http://jusst.de/hg/multiproto/ > Just try whether you can acquire a lock. > and try to parse the S2 satellite delivery system descriptor ? > dvbsnoop, or even libucsi will be able to do this. > Was too fast about this one. :-( Regards, Manu _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
