Hi David, I studied these documents but I have still no idea of how to decode the ESG BiM encoded. In your link there are only DVB-H specification and I'm not a technician of this... Is possible to have anything simpler to understand how to solve my trouble?
Thank you Giovanni ---------- Initial Header ----------- >From : "david may" [EMAIL PROTECTED] To : "Giovanni" [EMAIL PROTECTED] Cc : Date : Sat, 31 Mar 2007 04:49:10 +0100 Subject : Re[3]: [linux-dvb] DVB-H and dvbnet / MAC-broadcast address Hello Giovanni, Friday, March 30, 2007, 4:17:20 PM, you wrote: > Hi to everyone > Provided that I managed to receive the ESG bootstrap descriptors, > to identify the multicast address the ESG is transmitted on and to > receive the IP packets on the corresponding PID, I'm not able to > decode the ESG containers carried on it. > The main problem is that the ESG I'm trying to decode is BiM > encoded: could someone tell me how decode it or how to address this problem > in some other way? > I mean, if the .sdp files are carried within ESG containers, is it > absolutely necessary to decode them or there's some way to identify them and > skip the ESG decoding? > Moreover, I've read that .sdp files describing the streaming > sessions could be transmitted directly over FLUTE sessions, without > being encapsulated into ESG containers... Is this true? > And, in case it were, would the .sdp files directly announced in FLUTE FDT > instances? > Thank you > Giovanni > --------------------------------------------------- > ---------- Initial Header ----------- >>From : [EMAIL PROTECTED] > To : [email protected] > Cc : > Date : Fri, 30 Mar 2007 14:38:16 +0200 > Subject : Re: [linux-dvb] DVB-H and dvbnet / MAC-broadcast address > Dietmar Zlabinger wrote: >> Hi, >> >> I am looking for help on receiving DVB-H. >> I get to the point where the encapsulated IP is attached to a network >> interface (as dvb0_0 using dvbnet -p <portnr>). At this stage I am >> able to dump the UDP-packets received using tcpdump. But I am not able >> to get that IP-multicast into VLC. >> >> I believe the problem is related to the fact that normally >> IP-multicast uses the Ethernet broadcast address (ff:ff...) while in >> dvb-h the destination mac is (partly) replaced by the dvb-h time >> slicing information . Therefore the traffic is only received by the >> network interface when it is in promiscuous mode (when using tcpdump), >> but not when a normal program (like vlc) is trying to get multicast >> frames out of it. >> >> My idea then was to modify dvbnet so that it replaces the "broken" >> ethernet destination (is contains timeslicing-infos) by "ff:ff" so >> that it goes through the network interface. But the actual code of >> dvbnet does actually not handle the received data, the only thing that >> program does is some ioctl(fd_net). >> >> Any idea who I could get the ethernet-multicast out even when the >> destination mac is wrong? >> Any idea how I could modify (the kernel) so that I could overwrite the >> faulty mac? >> >> I could not find any description on how to receive dvb-h on the web. >> The are some mailing on how to find SDP files, but that was not such a >> big thing (dvbsnoop -b <pid> ..). >> >> >> Thanks for help, >> >> Dietmar > premitting that I have very little confidence with networking in general... > if you run > $ ifconfig dvb0_0 ip/mask promisc up > $ route add -net 224.0.0.0/4 dev dvb0_0 > you shouldn't need to tamper with the MAC addresses. > You can also use smcrouted to re-route the tuple src_ip->dest_ip from > dvb0_0 to eth0 > (although I find it annoying having to know the source ip). > I ad dvb-h working in both manners. > > > -- > Email.it, the professional e-mail, gratis per te: http://www.email.it/f > > Sponsor: > Refill s.r.l. - Cartucce compatibili e kit di ricarica per >tutti > i modelli di stampante. Acquista al telefono o online: >consegna in tutta > Italia in 48 ore! >> Clicca qui: >http://adv.email.it/cgi-bin/foclick.cgi?mid=5190&d=30-3 > _______________________________________________ > linux-dvb mailing list > [email protected] > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb > ------------------------------------------------------ > Passa a Infostrada. ADSL e Telefono senza limiti e senza canone Telecom > http://click.libero.it/infostrada > _______________________________________________ > linux-dvb mailing list > [email protected] > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb > __________ NOD32 2150 (20070328) Information __________ > This message was checked by NOD32 antivirus system. > http://www.eset.com a silly question but are there no hints in the pdfs here http://www.dvb-h.org/technology.htm -- Best regards, david mailto:[EMAIL PROTECTED] ------------------------------------------------------ Leggi GRATIS le tue mail con il telefonino i-modeĀ di Wind http://click.libero.it/imode _______________________________________________ linux-dvb mailing list [email protected] http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
