Hello, BOUWSMA Barry schrieb: > On Sun, 21 Dec 2008, Artem Makhutov wrote: > >> I just checked it out. It looks interesing, but I need UDP streaming, >> as the STB can only receive UDP-Streams. > > What sort of UDP do you need -- an RTP Transport Stream, > an RTP Program Stream, a simple raw Transport stream, or > what? It needs a raw MPEG-TS encapsulated in UDP packets. > Unless you're using a different `dvbstream' than I, it > sends out RTP (partial or not) Transport Streams, with > UDP packet size equal to the TS frame size (I hacked this > to fill as much of an ethernet frame as possible). > > I don't know if your `szap2' program simply sets up the > frontend to the desired frequency, or if it also sets > hardware PID filters on your card -- I've always been able > to use other utilities with bog-standard `t/szap' to work > on the entire TS. It also sets the PID's. > If bandwidth is an issue, a HD H.264 stream is likely to > weigh in around 10 to 20Mbit/sec; a full S2 transport > stream is higher (DVB-S streams from Astra are on the > order of 36Mbit/sec; S2 will likely be slightly more). No, bandwith is not an issue. I have a peak traffic of 20.51 MBit/s and an average traffic of 13.24 MBit/s. > Add the overhead for UDP encapsulation of the 188-byte > packets, and I wouldn't be surprised if you push close > to some hardware limits of a 100Mbit/sec network, given > the unreliable nature of UDP, and that a single dropped > or corrupt packet can appear as a video stream error. > > Although, as you said, your 'Doze works, so the sum of > your hardware should be able to handle the traffic. > > Something I just learned a few seconds ago, dvbstream: > -net ip:prt IP address:port combination to be followed by pids > list. Can be repeated to generate multiple RTP streams > > This will filter your ~50Mbit/sec transponder down to a > manageable size. Be sure to specify all the PIDs for > ASTRA HD or whatever; for the DVB-S Eins Festival that > will start tomorrow (Mo) with non-upscaled 720p content > again, that should be > 0 1600 -v 1601 -a 1602 1603 1606 > (as arguments to standalone `dvbstream') > > > Just some additional things to keep in mind... > > > By the way, I also received some personal mail which I > don't think made it to the list, and this may be of use > to you, so I'll quote from that here, so that others may > benefit: > DUBOST Brice wrote: > ``You can try mumudvb : http://mumudvb.braice.net, I think it will answer > your needs'' I will give it a try later. Thanks, Artem _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
