[linux-dvb] hi,a very simply ques tion about DVBsnoop

Sigmund Augdal Helberg sigmund at snap.tv
Wed Dec 6 10:36:21 CET 2006


On Wed, 2006-12-06 at 14:21 +0800, allanye at 163.com wrote:
> Dear Christophe,
> 
> I try to get NIT information like below by using DVBsnoop.
> 
> ---------------------------------------------------------------
> PID:  16 (0x0010)
> NIT-decoding....
> Table_ID: 64 (0x40)  [= network_information_section - actual network]
> section_syntax_indicator: 1 (0x01)
> reserved_1: 1 (0x01)
> reserved_2: 3 (0x03)
> Section_length: 279 (0x0117)
> Network_ID: 1 (0x0001)  [= Astra Satellite Network 19.2E / Satellite / SES]
> reserved_3: 3 (0x03)
> Version_number: 20 (0x14)
> Current_next_indicator: 1 (0x01)
> Section_number: 1 (0x01)
> Last_Section_number: 1 (0x01)
> reserved_4: 15 (0x0f)
> Network_descriptor_length: 0 (0x0000)
> 
> reserved_5: 15 (0x0f)
> Transport_stream_loop_length: 266 (0x010a)
>     
>     Transport_stream_ID: 1279 (0x04ff)
>     Original_network_ID: 1 (0x0001)  [= Astra Satellite Network 19,2°E | Société Européenne des Satellites]
>     reserved_1: 15 (0x0f)
>     Transport_descriptor_length: 13 (0x000d)
>         
>         DVB-DescriptorTag: 67 (0x43)  [= satellite_delivery_system_descriptor]
>         Descriptor_length: 11 (0x000b)
>         Frequency: 18453072 (=  11.99250 GHz)
>         Orbital_position: 402 (=  19.2)
>         West_East_flag: 1 (0x01)  [= EAST]
>         Polarisation: 0 (0x00)  [= linear - horizontal]
>         Modulation (Sat): 1 (0x01)  [= QPSK]
>         Symbol_rate: 2576384 (=  27.5000)
>         FEC_inner: 3 (0x03)  [= 3/4 conv. code rate]
> 	
> 	......
>  
> 
> ------------------------------------------------------------------------------------
> I try to use this command as below:
> /dvbsnoop -if test.ts  -n 500 0x10
Try dvbsnoop -s ts -tssubdecode -if test.ts 16

Sigmund

> 
> but I didn't get the similar result like example 
> 
> what kind't command should I input to get the similar result like
> example?
> I can sure that the test.ts file has NIT information.
> 
> Thanks
> Ye Hui
> 
> 
> 
> 
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