<div class="gmail_quote">Ludovic,<br><br>Did you manage to get a fix for issue at the time?<br><br>There's a few differences between both results. I'll try to explain but my knowledge in DVB can mislead me.<br>
<br>You're channel.dump is failing because the descriptors.h -> descl_validate() is returning false due to the descriptor lenght not matching the descriptors section lenght I think. (i.e descriptors_loop_length != from the real descriptors length???)<br>
<br>While in my case the services are duplicated. Refer to sdt.h -> sdt_table_validate()<br><br> /* check that the service is not already in the table */<br> if (sdt_table_find_service(pp_sections, sdtn_get_sid(p_service))<br>
!= p_service)<br> return false;<br><br>This is what happens in my case. For some reason there are duplicate services in the table.<br><br>new SDT actual tsid=1111 version=9 onid=1<br>...<br>
* service sid=7277 running=4<br> - desc 48 service type=0x80 provider="SES ASTRA" service="STB Sandmartin"<br> * service sid=7278 running=4<br> - desc 48 service type=0xab provider="SES ASTRA" service="STB Strong"<br>
* service sid=7279 running=4<br> - desc 48 service type=0xc provider="SES ASTRA" service="tvtv DIGITAL"<br>...<br> * service sid=7278 running=4<br> - desc 48 service type=0x80 provider="SES ASTRA" service="STB Strong"<br>
* service sid=7920 running=4<br> - desc 48 service type=0xc provider="SES ASTRA" service="SatRecord"<br>end SDT<br><br>Regards,<br>Nuno<div><div><br><div class="gmail_extra">
<br><br><div class="gmail_quote">
2012/11/7 Ludovic BOUE <span dir="ltr"><<a href="mailto:ludovic.boue@gmail.com" target="_blank">ludovic.boue@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Nuno,<br>
<br>
I had the same issue few month ago as you can see:<br>
<br>
De: "Georgi Chorbadzhiyski" <<a href="mailto:gf@unixsol.org" target="_blank">gf@unixsol.org</a>><br>
À: "Ludovic BOUÉ" <<a href="mailto:ludovic.boue@gmail.com" target="_blank">ludovic.boue@gmail.com</a>><br>
Envoyé: Mercredi 2 Mai 2012 11:38:41<br>
Objet: Re: [biTStream] Issue invalid_sdt_section<br>
<br>
Around 04/26/2012 10:23 AM, Ludovic BOUÉ scribbled:<br>
> Le 25/04/2012 16:55, Ludovic BOUÉ a écrit :<br>
>> Hello,<br>
>><br>
>> I am facing an issue to print SDT table with dvb_print_si tool. I am<br>
>> analysing a RTP mutlicast stream:<br>
>><br>
>> # dumprtp <a href="tel:239.255.2.32" value="+351239255232" target="_blank">239.255.2.32</a> 1234| ts_filter 17| ./dvb_print_si -x xml -T SDT<br>
>> <?xml version="1.0" encoding="utf-8"?><br>
>> <TS><br>
>> Filtering pid 17<br>
>> Rtp dump<br>
>> Using <a href="http://239.255.2.32:1234" target="_blank">239.255.2.32:1234</a><br>
>> <ERROR type="invalid_sdt_section" pid="17"/><br>
>> <ERROR type="invalid_sdt_section" pid="17"/><br>
>> <ERROR type="invalid_sdt_section" pid="17"/><br>
>> <ERROR type="invalid_sdt_section" pid="17"/><br>
>> <ERROR type="invalid_sdt_section" pid="17"/><br>
>><br>
>> It's working fine for other sections like EIT<br>
>> # dumprtp <a href="tel:239.255.2.32" value="+351239255232" target="_blank">239.255.2.32</a> 1234| ts_filter 18| ./dvb_print_si -x xml -T EIT<br>
>> Rtp dump<br>
>> Using <a href="http://239.255.2.32:1234" target="_blank">239.255.2.32:1234</a><br>
>> Filtering pid 18<br>
>> <?xml version="1.0" encoding="utf-8"?><br>
>> <TS><br>
>> <EIT tableid="0x50" type="actual_schedule" service_id="769"<br>
>> version="3" current_next="1" tsid="3" onid="8442"<br>
>> seg_last_sec_number="144" last_table_id=<br>
>> "0x50"><br>
>> <EVENT id="6453" start_time="1335507900" start_time_dec="2012-04-27<br>
>> 06:25:00 UTC" duration="300" duration_dec="00:05:00"<br>
>> running_status="0" free_CA_mo<br>
>> de="1"><br>
>> <DESC id="0x4d" length="164"<br>
>> value="6672651505532e412e562e2064657320e96d697373696f6e738a055072e973656e74e920706172204f6d617220657420467265642e20556e20<br>
>> 736b657463682064274f6d617220657420467265642064616e73206c657175656c206c652064756f20e97472696c6c652c206176656320756e2068756d6f757220636f72726f7369662c20<br>
>> 6c65207065746974206d6f6e6465206465206c612074e96ce9766973696f6e2e"><br>
>> <SHORT_EVENT_DESC lang="fre" event_name="S.A.V. des émissions"<br>
>> text="Présenté par Omar et Fred. Un sketch d'Omar et Fred dans<br>
>> lequel le duo étril<br>
>> le, avec un humour corrosif, le petit monde de la télévision."/><br>
>> </DESC><br>
>> </EVENT><br>
>><br>
>> What would you recommend to debug and fix that?<br>
>><br>
>> Regards,<br>
>> Ludovic BOUÉ<br>
><br>
> Hi Georgi,<br>
><br>
> I save a little bit of the stream and run dvb_print_si but I get similar<br>
> errors. You can find the dump here <a href="http://resel.fr/~lboue/canalplus.dump" target="_blank">http://resel.fr/~lboue/canalplus.dump</a><br>
> Could you look at it you a TS analyzer?<br>
><br>
> # cat canalplus.dump| ./dvb_print_si -x xml |grep invalid_sdt_section<br>
> <ERROR type="invalid_sdt_section" pid="17"/><br>
> <ERROR type="invalid_sdt_section" pid="17"/><br>
> <ERROR type="invalid_sdt_section" pid="17"/><br>
<br>
As expected the incoming SDT is buggy. See the attachment.<br>
<br>
--<br>
Georgi Chorbadzhiyski<br>
<a href="http://georgi.unixsol.org/" target="_blank">http://georgi.unixsol.org/</a><br>
----- Mail original -----<br>
<br>
De: "Nuno Mota" <<a href="mailto:ambershaper@gmail.com" target="_blank">ambershaper@gmail.com</a>><br>
À: <a href="mailto:dvblast-devel@videolan.org" target="_blank">dvblast-devel@videolan.org</a><br>
Envoyé: Mercredi 7 Novembre 2012 14:08:34<br>
Objet: [dvblast-devel] warning: invalid SDT received<br>
<div><div><br>
Hi,<br>
<br>
Found this while tuning Astra 19.2°E - 12603.75 H.<br>
<br>
Works fine using Mumudvb.<br>
<br>
debug: setting filter on PID 0<br>
debug: setting filter on PID 16<br>
debug: setting filter on PID 17<br>
debug: setting filter on PID 18<br>
debug: setting filter on PID 19<br>
debug: setting filter on PID 20<br>
debug: frontend has acquired signal<br>
debug: frontend has acquired carrier<br>
debug: frontend has acquired stable FEC<br>
debug: frontend has acquired sync<br>
info: frontend has acquired lock<br>
debug: - Bit error rate: 67108608<br>
debug: - Signal strength: 67074343<br>
debug: - SNR: 67108863<br>
debug: new PAT tsid=1111 version=14<br>
debug: * NIT pid=16<br>
debug: * program number=13 pid=32<br>
debug: * program number=7201 pid=7201<br>
debug: * program number=7203 pid=7203<br>
debug: * program number=7212 pid=7212<br>
debug: * program number=7216 pid=7216<br>
....<br>
debug: * program number=28547 pid=5630<br>
debug: end PAT<br>
warning: invalid SDT received<br>
<br>
I'm not much familiar with this but I guess this has something to do with biTStream parsing.<br>
<br>
Best regards,<br>
Nuno<br>
<br>
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</blockquote></div><br></div>
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