VDR's UpdateChannels destroys channel information

List overview All Threads
Download

newer

older

VDR form packages

Audio problem on Channel 4 HD on...

Teemu Suikki

21 Mar 2013 21 Mar '13

9:04 a.m.

Hi!

I have mysterious problem with some channels.. All seem to be on S13.0E, but on different transponders.

According to http://en.kingofsat.net/pos-13E.php page, "Disney Channel HD Italia" is DVB-S2, 8PSK, SR 29900. However, I seem to have DVB-S, QPSK, SR 27500 in my channels.conf.

I have tried editing the channel directly to channels.conf, while vdr stopped. Also I have tried editing it inside vdr, from channel list -> edit.. After the edit, channels shows fine for a few seconds, but then VDR updates it back to old values and channel stops showing!

Mar 21 10:41:53 yavdr vdr: [16964] edited channel 179 Disney Ch. HD;SkyItalia:12207:HC34M5O0S1:S13.0E:29900:164=27:0;416=ita@106,417=eng@106:701: 919,93B,9CD:4128:318:7501:0 Mar 21 10:41:56 yavdr vdr: [16964] switching to channel 179

-- Mar 21 10:41:59 yavdr vdr: [17038] changing transponder data of channel 179 from 12207:HC34M5O0S1:S13.0E:29900 to 12207:HC34M2S0:S13.0E:27500 Mar 21 10:42:00 yavdr vdr: [16964] retuning due to modification of channel 179 Mar 21 10:42:00 yavdr vdr: [16964] switching to channel 179 -- If I set Setup UpdateChannels to 0, vdr will not update the channel and it will show. But I'd like to keep channel updates enabled.. Is the transponder sending incorrect data, or what is going on? Teemu Suikki http://www.z-power.fi/

Show replies by date

Dominic Evans

21 Mar 21 Mar

11:10 a.m.

On 21 March 2013 09:04, Teemu Suikki tsuikki@zuik.org wrote:

...

I have mysterious problem with some channels.. All seem to be on S13.0E, but on different transponders.

According to http://en.kingofsat.net/pos-13E.php page, "Disney Channel HD Italia" is DVB-S2, 8PSK, SR 29900. However, I seem to have DVB-S, QPSK, SR 27500 in my channels.conf.

Is the transponder sending incorrect data, or what is going on?

What card(s) are you using? I have seen problems with TT-S2-3200 on other mailing lists / forums.

Klaus Schmidinger

11:22 a.m.

On 21.03.2013 10:04, Teemu Suikki wrote:

...

Hi!

I have mysterious problem with some channels.. All seem to be on S13.0E, but on different transponders.

According to http://en.kingofsat.net/pos-13E.php page, "Disney Channel HD Italia" is DVB-S2, 8PSK, SR 29900. However, I seem to have DVB-S, QPSK, SR 27500 in my channels.conf.

I have tried editing the channel directly to channels.conf, while vdr stopped. Also I have tried editing it inside vdr, from channel list -> edit.. After the edit, channels shows fine for a few seconds, but then VDR updates it back to old values and channel stops showing!

Mar 21 10:41:53 yavdr vdr: [16964] edited channel 179 Disney Ch. HD;SkyItalia:12207:HC34M5O0S1:S13.0E:29900:164=27:0;416=ita@106,417=eng@106:701: 919,93B,9CD:4128:318:7501:0 Mar 21 10:41:56 yavdr vdr: [16964] switching to channel 179

Here's the result of a test I ran on my VDR (TT S2-6400). I took your original channel entry and set the CA parameter to 0 (since I don't have a CAM/Smartcard for that channel), created a new channel and switched to it:

newc Disney Ch.HD;SkyItalia:12207:HC34M5O0S1:S13.0E:29900:164=27:0;416=ita@106,417=eng@106:701:0:4128:318:7501:0 250 3364 Disney Ch.HD;SkyItalia:12207:HC34M5O0S1:S13.0E:29900:164=27:0;416=ita@106,417=eng@106:701:0:4128:318:7501:0 chan 3364 250 3364 Disney Ch.HD

The PIDs and CA-IDs were changed automatically:

Mar 21 12:11:23 vdr2 vdr: [29620] new channel 3364 Disney Ch.HD;SkyItalia:12207:HC34M5O0S1:S13.0E:29900:164=27:0;416=ita@106,417=eng@106:701:0:4128:318:7501:0 Mar 21 12:11:32 vdr2 vdr: [29620] switching to channel 3364 Mar 21 12:11:34 vdr2 vdr: [29626] changing pids of channel 3364 from 164+164=27:0;416=ita@106,417=eng@106:0:701 to 164+164=27:0;416=ita@106,417=und@106:0:701 Mar 21 12:11:34 vdr2 vdr: [29626] changing caids of channel 3364 from 0 to 919,93B,9CD Mar 21 12:11:34 vdr2 vdr: [29620] retuning due to modification of channel 3364 Mar 21 12:11:34 vdr2 vdr: [29620] switching to channel 3364 Mar 21 12:11:34 vdr2 vdr: [29620] info: Channel not available!

lstc 3364 250 3364 Disney Ch.HD;SkyItalia:12207:HC34M5O0S1:S13.0E:29900:164=27:0;416=ita@106,417=und@106:701:919,93B,9CD:4128:318:7501:0

A few seconds later, the transponder data was changed:

Mar 21 12:11:53 vdr2 vdr: [29626] changing transponder data of channel 3364 from 12207:HC34M5O0S1:S13.0E:29900 to 12207:HC34M2S0:S13.0E:27500 Mar 21 12:11:53 vdr2 vdr: [29620] retuning due to modification of channel 3364 Mar 21 12:11:53 vdr2 vdr: [29620] switching to channel 3364 Mar 21 12:11:53 vdr2 vdr: [29620] info: Channel not available!

lstc 3364 250 3364 Disney Ch.HD;SkyItalia:12207:HC34M2S0:S13.0E:27500:164=27:0;416=ita@106,417=und@106:701:919,93B,9CD:4128:318:7501:0

You may want to use a tool like dvbsnoop and check what is broadcast in the NIT of that provider.

Klaus

Teemu Suikki

12:42 p.m.

2013/3/21 Klaus Schmidinger Klaus.Schmidinger@tvdr.de:

...

Mar 21 12:11:53 vdr2 vdr: [29626] changing transponder data of channel 3364 from 12207:HC34M5O0S1:S13.0E:29900 to 12207:HC34M2S0:S13.0E:27500 Mar 21 12:11:53 vdr2 vdr: [29620] retuning due to modification of channel

Hi,

ok, thanks for the confirmation!

I tried dvbsnoop. It returns correct values (dvb-s2, sr 29900).. See below. Then I tried "scan-s2 -c" from the command line, and interestingly it reports correct SR 29900 but dvb-s, not dvb-s2.. Weird?

-----

Transport_stream_ID: 7500 (0x1d4c) Original_network_ID: 64511 (0xfbff) [= Sky Italia | Sky Italia Spa.] reserved_1: 15 (0x0f) Transport_descriptor_length: 54 (0x0036) (...) DVB-DescriptorTag: 67 (0x43) [= satellite_delivery_system_descriptor] descriptor_length: 11 (0x0b) Frequency: 19007128 (= 12.20698 GHz) Orbital_position: 304 (= 13.0) West_East_flag: 1 (0x01) [= EAST] Polarisation: 0 (0x00) [= linear - horizontal] Kind: 1 (0x01) [= DVB-S2] Roll Off Faktor: 0 (0x00) [= Alpha 0.35] Modulation_type: 2 (0x02) [= 8PSK] Symbol_rate: 2723840 (= 29.9000) FEC_inner: 3 (0x03) [= 3/4 conv. code rate]

-- Teemu Suikki http://www.z-power.fi/

Teemu Suikki

1:07 p.m.

A bit more into this..

I tried dvbsnooping different satellites, I noticed some difference.

This is from Thor, 1.0W:

----------------------- Transport_stream_ID: 4 (0x0004) Original_network_ID: 70 (0x0046) [= 1 degree W | Telenor] reserved_1: 15 (0x0f) Transport_descriptor_length: 191 (0x00bf)

DVB-DescriptorTag: 67 (0x43) [= satellite_delivery_system_descriptor] descriptor_length: 11 (0x0b) Frequency: 17967360 (= 11.22900 GHz) Orbital_position: 16 (= 1.0) West_East_flag: 0 (0x00) [= WEST] Polarisation: 0 (0x00) [= linear - horizontal] Kind: 0 (0x00) [= DVB-S] fixed ('00'): 0 (0x00) Modulation_type: 1 (0x01) [= QPSK] Symbol_rate: 2379776 (= 24.5000) FEC_inner: 5 (0x05) [= 7/8 conv. code rate]

DVB-DescriptorTag: 65 (0x41) [= service_list_descriptor] descriptor_length: 30 (0x1e) service_ID: 418 (0x01a2)[ --> refers to PMT program_number] service_type: 1 (0x01) [= digital television service]

(other sid's follow, cut away for clarity) ----------------------------

But this "faulty" transponder in S13E:

---------------------------- Transport_stream_ID: 7500 (0x1d4c) Original_network_ID: 64511 (0xfbff) [= Sky Italia | Sky Italia Spa.] reserved_1: 15 (0x0f) Transport_descriptor_length: 54 (0x0036)

DVB-DescriptorTag: 65 (0x41) [= service_list_descriptor] descriptor_length: 39 (0x27) service_ID: 4117 (0x1015)[ --> refers to PMT program_number] service_type: 25 (0x19) [= advanced codec HD digital television service]

(other sid's follow, cut away for clarity)

DVB-DescriptorTag: 67 (0x43) [= satellite_delivery_system_descriptor] descriptor_length: 11 (0x0b) Frequency: 19007128 (= 12.20698 GHz) Orbital_position: 304 (= 13.0) West_East_flag: 1 (0x01) [= EAST] Polarisation: 0 (0x00) [= linear - horizontal] Kind: 1 (0x01) [= DVB-S2] Roll Off Faktor: 0 (0x00) [= Alpha 0.35] Modulation_type: 2 (0x02) [= 8PSK] Symbol_rate: 2723840 (= 29.9000) FEC_inner: 3 (0x03) [= 3/4 conv. code rate]

----------------------------

So.. DVB-DescriptorTag's 65 and 67 appear in opposite order! Could it be that VDR has transponder data still uninitialized when it is scanning the service id, because 67 is not arrived yet?

-- Teemu Suikki http://www.z-power.fi/

Klaus Schmidinger

1:17 p.m.

On 21.03.2013 14:07, Teemu Suikki wrote:

...

A bit more into this..

I tried dvbsnooping different satellites, I noticed some difference.

This is from Thor, 1.0W:
 Transport_stream_ID: 4 (0x0004)
 Original_network_ID: 70 (0x0046)  [= 1 degree W | Telenor]
 reserved_1: 15 (0x0f)
 Transport_descriptor_length: 191 (0x00bf)

         DVB-DescriptorTag: 67 (0x43)  [=
satellite_delivery_system_descriptor] descriptor_length: 11 (0x0b) Frequency: 17967360 (= 11.22900 GHz) Orbital_position: 16 (= 1.0) West_East_flag: 0 (0x00) [= WEST] Polarisation: 0 (0x00) [= linear - horizontal] Kind: 0 (0x00) [= DVB-S] fixed ('00'): 0 (0x00) Modulation_type: 1 (0x01) [= QPSK] Symbol_rate: 2379776 (= 24.5000) FEC_inner: 5 (0x05) [= 7/8 conv. code rate]
         DVB-DescriptorTag: 65 (0x41)  [= service_list_descriptor]
         descriptor_length: 30 (0x1e)
            service_ID: 418 (0x01a2)[ --> refers to PMT program_number]
            service_type: 1 (0x01)  [= digital television service]

            (other sid's follow, cut away for clarity)
But this "faulty" transponder in S13E:
Transport_stream_ID: 7500 (0x1d4c)
 Original_network_ID: 64511 (0xfbff)  [= Sky Italia | Sky Italia Spa.]
 reserved_1: 15 (0x0f)
 Transport_descriptor_length: 54 (0x0036)

         DVB-DescriptorTag: 65 (0x41)  [= service_list_descriptor]
         descriptor_length: 39 (0x27)
            service_ID: 4117 (0x1015)[ --> refers to PMT program_number]
            service_type: 25 (0x19)  [= advanced codec HD digital
television service]
            (other sid's follow, cut away for clarity)

         DVB-DescriptorTag: 67 (0x43)  [=
satellite_delivery_system_descriptor] descriptor_length: 11 (0x0b) Frequency: 19007128 (= 12.20698 GHz) Orbital_position: 304 (= 13.0) West_East_flag: 1 (0x01) [= EAST] Polarisation: 0 (0x00) [= linear - horizontal] Kind: 1 (0x01) [= DVB-S2] Roll Off Faktor: 0 (0x00) [= Alpha 0.35] Modulation_type: 2 (0x02) [= 8PSK] Symbol_rate: 2723840 (= 29.9000) FEC_inner: 3 (0x03) [= 3/4 conv. code rate]

So.. DVB-DescriptorTag's 65 and 67 appear in opposite order! Could it be that VDR has transponder data still uninitialized when it is scanning the service id, because 67 is not arrived yet?

I just checked, but VDR doesn't parse the service_list_descriptor. So it shouldn't matter whether it comes before or after the satellite_delivery_system_descriptor.

Klaus

Teemu Suikki

2:16 p.m.

Guess what, problem solved..

My channels config had TID 7501, but the real TID is 7500.. I have no idea how this could have been changed, though? And I thought that the channel wouldn't show at all, if TID is not correct?

Anyway, with TID changed to 7500, I can enable UpdateChannels and vdr won't touch the transponder data anymore.

Still a bit odd that it updated the transponder data.. S13E does not have TID 7501 in any transponder, so where did the updated data come from?

-- Teemu Suikki http://www.z-power.fi/

4317

Age (days ago)

4317

Last active (days ago)

vdr@linuxtv.org

6 comments

3 participants

tags (0)

participants (3)

Dominic Evans
Klaus Schmidinger
Teemu Suikki