>-------- Оригинално писмо -------- >От: Newsy Paper newspaperman_germany@xxxxxxxxx >Относно: Re: Skystar USB HD + VDR + Astra 23.5E 11817 V / 8psk, fec=5/6 >До: VDR Mailing List <vdr@xxxxxxxxxxx> >Изпратено на: Вторник, 2012, Ноември 27 22:38:10 EET > --- N. D. schrieb am Do, 22.11.2012: > > > Von: N. D. > > Betreff: Re: Skystar USB HD + VDR + Astra 23.5E 11817 V / 8psk, fec=5/6 > > An: "Ales Jurik" > > CC: "VDR Mailing List" > > Datum: Donnerstag, 22. November, 2012 14:31 Uhr > > > > > > >-------- Оригинално писмо -------- > > > > >От: Ales Jurik ajurik@xxxxxxxx > > > > >Относно: Re: Skystar USB HD + VDR + Astra > > 23.5E 11817 V / 8psk,fec=5/6 > > > > >До: VDR Mailing List > > > > >Изпратено на: Сряда, 2012, Юни 13 > > 18:34:55 EEST > > > > > > > > > > > On 06/13/12 10:45, N. D. wrote: > > > > > > > > > > > > > > > > > > Hi, > > > > > > Since recently I have been using Skystar USB HD > > with my vdr > > > > > > box. However I have some strange issues with > > 11817V on Astra 23.5E. > > > > > > Femon reports that there is a lock and sound comes > > but the image is > > > > > > completely garbled. I am starting to suspect that > > there might be > > > > > > something wrong with the driver, because I have no > > trouble with the > > > > > > other transpoders. Maybe it is the combination of > > fec=5/6 and 8psk on > > > > > > the said transponder that is the reason for this. > > Other transponders > > > > > > with fec=3/4 and 8psk are OK. The same setup with > > an HVR-4000 works > > > > > > fine. > > > > > > > > > > > > Kernel: 3.3.4 > > > > > > > > > > > > VDR: 1.7.27 > > > > > > > > > > > > Could someone who owns a Skystar USB HD and has > > access to Astra 23.5E > > > > > > share his experience? Is this a driver issue a > > problem with vdr or is my card faulty? > > > > > > > > > > > > If someone would be kind enough to test this with > > his/hers hardware, there is a FTA channel on the problematic > > transponder: > > > > > > > > > > > > > > > > > > > > > > > > Planeta > > HD;SatelliteBG:11817:VC56M5O35S1:S23.5E:27500:1001=27:1002=@3:0:0:5410:3:3206:0 > > > > > > > > > > > > > > > > > > > > > > > > Any help would be greatly > > appreciated. > > > > > > > > > > > > > > > > > > > > Hi, > > > > > > > > > > few months ago on this transponder was nearly 30% of > > null PID packets > > > > > broadcasted, but now it seems to be much better (less > > than 1Mbps). Also > > > > > multiplexing of this transponder was not equal within > > time - there was > > > > > chunks of packets of PlanetHD multiplexed with chunks > > of other SD > > > > > channels mixed packets. Maybe the buffers for USB are > > not big enough to > > > > > memorize such chunks? But I didn't done measuring for > > some months, so > > > > > the situation may be different now. > > > > > > > > > > You can see bitrates of this transponder at > > > > > http://www.digitalbitrate.com/dtv.php?mux=11817&pid=5410&live=70&lang=en > > . > > > > > > > > > > The bitrate of this channel is nothing special, with > > maximum about 11 > > > > > Mbps, the peak of 20.2Mbps at 22.5. was maybe a joke. > > > > > > > > > > Regards, > > > > > > > > > > Ales > > > > Hi, > > > > Since 20 Nov transponders 12051V and 12207V on the same > > satellite Astra 3B were switched to fec=5/6 and they also > > became unwatchable. Before the change they were 8psk, > > fec=3/4. Now they are 8psk, fec=5/6. > > > > _______________________________________________ > have you tried this patch written by Old_Man? > > http://www.vdr-portal.de/board16-video-disk-recorder/board85-hdtv-dvb-s2/p977938-stb0899-fec-3-4-tester-gesucht/#post977938 > > kind regards > > Newsy > > _______________________________________________ I am running kernel 3.6.2 on that particular machine and as far as I can tell that patch is already included. I also tried reverting it but it didn't help. For me the telling difference can be seen here: http://www.digitalbitrate.com/dtv.php?liste=1&live=70&lang=en&mux=12207 Before the change to fec=5/6 the total bitrate of 12207V and 12051V was below 60Mbps. Now it is over 65Mbps. According to the spec for Technotrend S2-3200 (http://www.tt-downloads.de/update/engl/techspec_tt-budget_s2-3200_en.pdf) 60Mbps is the limit for DVB-S. For DVB-S2 it is stated that the card supports bitrates of up to 90Mbps. So my next guess is that the linux driver implementation somehow precludes the support of bitrates above 90Mbps for DVB-S2, which are technically possible nonetheless. After all I was able to accidentally get proper lock on these transponders a couple of times but it is very hard to reproduce. _______________________________________________ vdr mailing list vdr@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
