Matteo Pampolini wrote:
But what about the entire TS? I read about the special
PID 8192, but I did not understood if this is a
dvbstream feature (that doesn't work, at least for me)
or if it's a LinuxDVB one.
hi,
in theory, it's not that difficult to dump a complete stream, BUT you
should pay attention to the signal level because it's easy to get some
continuity errors too if the BER is not zero..
i have a USB DVB-T device called Cinergy T2, and i can share my two
hints. BTW i don't know if your device has the same capability (full ts
dump..):
when i insert it on the USB BUS i get from dmesg:
==
[10511.327179] usb 2-2.2.3: new high speed USB device using ehci_hcd
and address 15
[10511.346586] usb 2-2.2.3: configuration #1 chosen from 1 choice
[10511.543120] DVB: registering new adapter (TerraTec/qanu USB2.0
Highspeed DVB-T Receiver)
[10511.544594] usbcore: registered new interface driver cinergyT2
==
and here it's a sample of a command line for dvbstream (you get La7 in
Bologna) to dump the complete ts stream
[EMAIL PROTECTED]:/opt$ dvbstream -f 714000 -o 8192 /tmp/prova.ts
dvbstream v0.6 - (C) Dave Chapman 2001-2004
Released under the GPL.
Latest version available from http://www.linuxstb.org/
Tuning to 714000 Hz
Using DVB card TerraTec/qanu USB2.0 Highspeed DVB-T Receiver, freq=714000
tuning DVB-T (in United Kingdom) to 71400 Hz, Bandwidth: 8
Getting frontend status
Bit error rate: 0
Signal strength: 54068
SNR: 46260
UNC: 0
FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI
FE_HAS_SYNC
dvbstream will stop after -1 seconds (71582788 minutes)
Output to stdout
Streaming 1 stream
Caught signal 2 - closing cleanly.
=
as i told before, pay attention to the Bit Error Rate line, it should
be zero..
let's see the file has grown a bit
[EMAIL PROTECTED]:/opt$ ls -l /tmp/prova.ts
-rw-r--r-- 1 andrea andrea 17268552 2008-01-03 18:28 /tmp/prova.ts
now it's time to play it with VLC:
running with vlc you get some continuity errors only at the beginning
(just to synchronize from the zero value as default..), if your TS is
good enough.. like here:
[EMAIL PROTECTED]:/opt$ vlc /tmp/prova.ts
VLC media player 0.8.6c Janus
libdvbpsi error (PSI decoder): TS discontinuity (received 8, expected 0)
for PID 0
libdvbpsi error (PSI decoder): TS discontinuity (received 11, expected
0) for PID 269
libdvbpsi error (PSI decoder): TS discontinuity (received 10, expected
0) for PID 256
libdvbpsi error (PSI decoder): TS discontinuity (received 5, expected 0)
for PID 343
libdvbpsi error (PSI decoder): TS discontinuity (received 8, expected 0)
for PID 7042
libdvbpsi error (PSI decoder): TS discontinuity (received 15, expected
0) for PID 283
libdvbpsi error (PSI decoder): TS discontinuity (received 12, expected
0) for PID 279
libdvbpsi error (PSI decoder): TS discontinuity (received 1, expected 0)
for PID 289
libdvbpsi error (PSI decoder): TS discontinuity (received 7, expected 0)
for PID 298
libdvbpsi error (PSI decoder): TS discontinuity (received 9, expected 0)
for PID 295
libdvbpsi error (PSI decoder): TS discontinuity (received 11, expected
0) for PID 292
libdvbpsi error (PSI decoder): TS discontinuity (received 5, expected 0)
for PID 301
libdvbpsi error (PSI decoder): TS discontinuity (received 11, expected
0) for PID 359
libdvbpsi error (PSI decoder): TS discontinuity (received 14, expected
0) for PID 304
libdvbpsi error (PSI decoder): TS discontinuity (received 13, expected
0) for PID 18
libdvbpsi error (PSI decoder): TS discontinuity (received 1, expected 0)
for PID 17
HTH
bye
andrea
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