[mythtv-commits] Ticket #5827: Unable to use DVB-T from translator

[MythTV]

#5827: Unable to use DVB-T from translator
--------------------------+-------------------------------------------------
 Reporter:  marcusbrutus  |        Owner:  danielk   
     Type:  defect        |       Status:  new       
 Priority:  major         |    Milestone:  unknown   
Component:  channelscan   |      Version:  0.21-fixes
 Severity:  high          |   Resolution:            
  Mlocked:  0             |  
--------------------------+-------------------------------------------------

Comment(by marcusbrutus):

 for example:
 Tuner tuned to "Southern Cross Television" on the translator:

 #############################################################################################

 # grep SCTV channels.conf
 SCTV
 Hobart:767500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:625:626:2306
 SCTV -
 HD:767500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:3611:0:2338
 SCTV:767500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_3_4:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:625:626:2370

 #############################################################################################

 # tzap -c channels.conf "SCTV"
 using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
 tuning to 767500000 Hz
 video pid 0x0271, audio pid 0x0272
 ...[snip]


 #############################################################################################

 # dvbsnoop -n 1 -nph 0x10 | grep -i Cent[eE][Rr]
             Center frequency: 0x01443fd0 (= 212500.000 kHz)

 #############################################################################################

 # dvbsnoop -n 1 -nph 0x10 | grep -i Cent[eE][Rr]
             Center frequency: 0x01443fd0 (= 212500.000 kHz)
 mythtuner:~# dvbsnoop -n 1 -nph 0x10
 dvbsnoop V1.4.50 -- http://dvbsnoop.sourceforge.net/

 ------------------------------------------------------------
 SECT-Packet: 00000001   PID: 16 (0x0010), Length: 84 (0x0054)
 Time received: Thu 2008-10-16  23:54:46.946
 ------------------------------------------------------------
 PID:  16 (0x0010)  [= assigned for: DVB Network Information Table (NIT),
 Stuffing Table (ST)]

 Guess table from table id...
 NIT-decoding....
 Table_ID: 64 (0x40)  [= Network Information Table (NIT) - actual network]
 section_syntax_indicator: 1 (0x01)
 reserved_1: 1 (0x01)
 reserved_2: 3 (0x03)
 Section_length: 81 (0x0051)
 Network_ID: 12938 (0x328a)  [= --> please lookup at http://www.dvb.org]
 reserved_3: 3 (0x03)
 Version_number: 7 (0x07)
 current_next_indicator: 1 (0x01)  [= valid now]
 Section_number: 0 (0x00)
 Last_Section_number: 0 (0x00)
 reserved_4: 15 (0x0f)
 Network_descriptor_length: 27 (0x001b)

         DVB-DescriptorTag: 64 (0x40)  [= network_name_descriptor]
         descriptor_length: 25 (0x19)
         Network_name: "Southern Cross Television"  -- Charset: Latin
 alphabet


 reserved_5: 15 (0x0f)
 Transport_stream_loop_length: 41 (0x0029)

     Transport_stream_ID: 2306 (0x0902)
     Original_network_ID: 12811 (0x320b)  [= >>ERROR: not (yet) defined...
 Report!<<]
     reserved_1: 15 (0x0f)
     Transport_descriptor_length: 35 (0x0023)

             DVB-DescriptorTag: 65 (0x41)  [= service_list_descriptor]
             descriptor_length: 6 (0x06)
                service_ID: 2306 (0x0902)[ --> refers to PMT
 program_number]
                service_type: 1 (0x01)  [= digital television service]

                service_ID: 2338 (0x0922)[ --> refers to PMT
 program_number]
                service_type: 1 (0x01)  [= digital television service]


             DVB-DescriptorTag: 90 (0x5a)  [=
 terrestrial_delivery_system_descriptor]
             descriptor_length: 11 (0x0b)
             Center frequency: 0x01443fd0 (= 212500.000 kHz)
             Bandwidth: 1 (0x01)  [= 7 MHz]
             priority: 1 (0x01)  [= HP (high priority) or Non-hierarch.]
             Time_Slicing_indicator: 1 (0x01)  [= Time Slicing is not
 used.)]
             MPE-FEC_indicator: 1 (0x01)  [= MPE-FEC is not used.)]
             reserved_1: 3 (0x03)
             Constellation: 2 (0x02)  [= 64-QAM]
             Hierarchy information: 0 (0x00)  [= non-hierarchical (native
 interleaver)]
             Code_rate_HP_stream: 2 (0x02)  [= 3/4]
             Code_rate_LP_stream: 0 (0x00)  [= 1/2]
             Guard_interval: 1 (0x01)  [= 1/16]
             Transmission_mode: 1 (0x01)  [= 8k mode]
             Other_frequency_flag: 1 (0x01)
             reserved_2: 4294967295 (0xffffffff)

             DVB-DescriptorTag: 131 (0x83)  [= User defined/ATSC reserved]
             descriptor_length: 12 (0x0c)
             Descriptor-data:
                  0000:  09 02 fc 06 09 22 fc 3c  09 42 fc 42
 .....".<.B.B

 CRC: 4292949646 (0xffe1368e)
 ==========================================================

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/5827#comment:1>
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