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. thanks, Francesco _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
