[mythtv-commits] Ticket #7449: Unknown ServiceDescriptor 0x16 when scanning SD H.264 DVB channels

[MythTV]

#7449: Unknown ServiceDescriptor 0x16 when scanning SD H.264 DVB channels
----------------------------------------------------+-----------------------
 Reporter:  Steven Ellis <support@…>                |       Owner:  janne  
     Type:  defect                                  |      Status:  new    
 Priority:  minor                                   |   Milestone:  0.22   
Component:  MythTV - DVB                            |     Version:  0.22rc1
 Severity:  medium                                  |     Mlocked:  0      
----------------------------------------------------+-----------------------

Comment(by Steven Ellis <support@…>):

 Here is an example of the critical output from a channel scan. Notice the
 channels with ServiceDescriptor of 0x16 are marked as unknown.
 {{{
 2009-10-17 16:42:03.858 ChannelScanSM(/dev/dvb/adapter0/frontend0): Got a
 Service Description Table for Transport ID 29
 SDT: TSID(0x1d) original_network_id(0x222a) services(3)
   Service # 0 SID(0x516) eit_schd(t) eit_pf(t) encrypted(f)
   Service descriptors length: 42
     ServiceDescriptor: TV3 PLUS1 (Unknown 16)
     DefaultAuthorityDescriptor: Authority(crid://tv3.co.nz)
   Service # 1 SID(0x514) eit_schd(t) eit_pf(t) encrypted(f)
   Service descriptors length: 36
     ServiceDescriptor: TV3 (TV)
     DefaultAuthorityDescriptor: Authority(crid://tv3.co.nz)
   Service # 2 SID(0x515) eit_schd(t) eit_pf(t) encrypted(f)
   Service descriptors length: 36
     ServiceDescriptor: C4 (Unknown 16)
     DefaultAuthorityDescriptor: Authority(crid://c4tv.co.nz)


   Transport descriptors length: 178
     TerrestrialDeliverySystemDescriptor: Frequency: 0
       BW=8k, C=qam_64, HP=3/4, LP=3/4, GI=1/16, TransMode=8k
     ServiceListDescriptor: 3 Services
       Service (1300) Type (TV)
       Service (1301) Type (Unknown 16)
       Service (1302) Type (Unknown 16)
 }}}

 Looking at the transport stream NIT information captured via dvbsnoop
 {{{
     Transport_stream_ID: 29 (0x001d)
     Original_network_ID: 8746 (0x222a)  [= DTT - New Zealand Digital
 Terrestrial Television| TVNZ on behalf of Freeview (NZ)]
     reserved_1: 15 (0x0f)
     Transport_descriptor_length: 178 (0x00b2)

             DVB-DescriptorTag: 90 (0x5a)  [=
 terrestrial_delivery_system_descriptor]
             descriptor_length: 11 (0x0b)
             Center frequency: 0x00000000 (= 0.000 kHz)
             Bandwidth: 0 (0x00)  [= 8 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: 2 (0x02)  [= 3/4]
             Guard_interval: 1 (0x01)  [= 1/16]
             Transmission_mode: 1 (0x01)  [= 8k mode]
             Other_frequency_flag: 1 (0x01)
             reserved_2: 4294967295 (0xffffffff)

             DVB-DescriptorTag: 65 (0x41)  [= service_list_descriptor]
             descriptor_length: 9 (0x09)
                service_ID: 1300 (0x0514)[ --> refers to PMT
 program_number]
                service_type: 25 (0x19)  [= advanced codec HD digital
 television service]

                service_ID: 1301 (0x0515)[ --> refers to PMT
 program_number]
                service_type: 22 (0x16)  [= advanced codec SD digital
 television service]

                service_ID: 1302 (0x0516)[ --> refers to PMT
 program_number]
                service_type: 22 (0x16)  [= advanced codec SD digital
 television service]
 }}}

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/7449#comment:2>
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