[streaming] Streaming whole DVB-T mux with dvblast

jan markus markus.jan at seznam.cz
Wed Jul 28 11:32:57 CEST 2010


Hello,

I am trying to stream whole DVB-T mux over IP with dvblast, but without any success. I use 
following command:

   ./dvblast -u -d 239.255.0.1:1234 -f 586000000 -m qam_64 -b 8

and get this information:

DVBlast 1.3.0-svn
warning: restarting
debug: using linux-dvb API version 5
debug: Frontend "DiBcom 7000PC" type "OFDM (DVB-T)" supports:
debug:  frequency min: 45000000, max: 860000000, stepsize: 62500, tolerance: 0
debug:  symbolrate min: 0, max: 0, tolerance: 0
debug:  capabilities:
debug:   INVERSION_AUTO
debug:   FEC_1_2
debug:   FEC_2_3
debug:   FEC_3_4
debug:   FEC_5_6
debug:   FEC_7_8
debug:   FEC_AUTO
debug:   QPSK
debug:   QAM_16
debug:   QAM_64
debug:   QAM_AUTO
debug:   TRANSMISSION_MODE_AUTO
debug:   GUARD_INTERVAL_AUTO
debug:   HIERARCHY_AUTO
debug:   FE_CAN_RECOVER
debug: tuning OFDM frontend to f=586000000 bandwidth=8 modulation=qam_64
warning: failed opening CAM device /dev/dvb/adapter0/ca0 (No such file or directory)
debug: setting filter on PID 8192
error: no config file
warning: discontinuity for PID 301
warning: discontinuity for PID 101
warning: discontinuity for PID 501
warning: discontinuity for PID 201
warning: discontinuity for PID 401
libdvbpsi error (PSI decoder): TS discontinuity (received 10, expected 0) for PID 0
debug: new PAT ts_id=528 version=2 current_next=1
debug:   * number=0 pid=16
debug:   * number=513 pid=100
debug:   * number=514 pid=400
debug:   * number=769 pid=200
debug:   * number=770 pid=500
debug:   * number=2049 pid=300
debug: frontend has acquired signal
debug: frontend has acquired carrier
debug: frontend has acquired stable FEC
debug: frontend has acquired sync
debug: frontend has acquired lock
debug: - Bit error rate: 0
debug: - Signal strength: 28060
debug: - SNR: 181

But no packet ever leaves my PC.

When I try to get the complete mux with dvbstream:

   dvbstream -i 239.255.0.1 -r 1234 -f 586000000 -qam 64 -gi 4 -I 2 -c 0 -tm 8 8192

everything works just fine. Anyway, dvbstream needs more informations about mux, otherwise 
it does not lock. Dvblast have no problems with that.

I have 2.6.32 kernel, latest v4l-dvb, dvblast from SVN, USB DVB-T Pinnacle PCTV 73e 
(DiBcom 7000PC) and anything else you would need to know.

Please help :)

Thank you very much,
-Jan


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