File Format Comparison

Comparison of existing DVB file formats.

"Nokia" format.

Example:

:SAT "Astra" 19.2 E
:NET "Canal Sat
:TRP 1074 1189500 275000 1 V 0 3/4
:CHN "Canal Sat
:CHN "Hit List" 29461 R

Can only represent DVBS.
From libdvb - cannot find other examples.
Can be edited in a text editor.
Easy to parse.
Appears to be the format used by an unknown nokia receiver (?)
May not be the same across all nokia devices.

meztler bros' libdvb XML

Example:

<?xml version="1.0"?>
<satellite>
<transponder type="S" freq="11817000" srate="27500000" polarity="V" >
<service id="8001" ca="1">
<description tag="0x48" type="1" provider_name="CANALSATELLITE" service_name="S$
<ca_descriptor tag="0x09" system_id="0x0500" ca_pid="2" />
<ca_descriptor tag="0x09" system_id="0x0500" ca_pid="5" />
<stream type="198" pid="1251">
</stream>
</satellite>

Can represent all FE types.
Extensible
Can be edited in a text editor, but XML reduces clarity.
Easy to parse, but requires XML parser.

meztler bros' libdvb plaintext

Example:

LNB ID 2 TYPE 0 LOF1 9750000 LOF2 10600000 SLOF 11700000 DISEQCNR 2

 SAT ID 3592 NAME "Thor 2,3          " LNBID 2 FMIN 10700000 FMAX 12700000
   TRANSPONDER ID 0001 SATID 3592 TYPE 0 FREQ 11229000 POL H SRATE 24500000 FEC 7/8
     CHANNEL ID 0 SATID 3592 TPID 1 SID ca TYPE 0 VPID 2bc APID 2bd ANAME "eng" TTPID c9 PCRPID 2bc
     CHANNEL ID 1 SATID 3592 TPID 1 SID cb TYPE 0 VPID 200 APID 280 TTPID 240
     CHANNEL ID 2 SATID 3592 TPID 1 SID cd TYPE 0 VPID 258 APID 259 TTPID cb
     CHANNEL ID 3 SATID 3592 TPID 1 SID 196 TYPE 0 VPID 384 APID 385 TTPID 12d

Can represent all FE types. Exact meaning of some values unclear. Extensible. Easy to edit in a text editor. Easy to parse.

satcodx

Example:

SATCODX103PANAMSAT 9 TDIC10037200001USA Amer3020PAN009CA______195103000000000000000030000100001ESP__________ica Latina SATCODX103PANAMSAT 9 TDIC10037200001Cino Lat3020PAN009CA______195103000000000000000040000100001ESP__________ino SATCODX103PANAMSAT 9 TDIC10037200001Exa TV 3020PAN009CA______195103000000000000000050000100001ESP__________ SATCODX103PANAMSAT 9 TDIC10037200001Hallmark3020PAN009CA______195103000000000000000060000100001ESP__________ Channel Mex SATCODX103PANAMSAT 9 TDIC10037200001MVS Empr3020PAN009CA______195103000000000000000070000100001ESP__________esarial

Likely can only be able to represent DVBS. Not easily editable.. or understood :) Easy to parse. Not extensible.

zap

BBC Radio 1:658166670:INVERSION_OFF:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:0:6210:14336 BBC Radio 2:658166670:INVERSION_OFF:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:0:6226:14400 BBC Radio 3:658166670:INVERSION_OFF:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:0:6242:14464 BBC Radio 4:658166670:INVERSION_OFF:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:0:6258:14528

Can represent all FE types - but exact FE type is not encoded in the file. Easily editable and understood. Easy to parse. Not easily extensible - you can keep adding on more stuff at the end, but this reduces clarity a great deal.

File Format Comparison

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