[linux-dvb] Re: Reception of raw TS or multiple PIDS

[Nico <sabbi@CS.UniBO.IT>]

Dvbstream (you should use the last cvs version from www.sf.net/projects/dvbtools/) 
will help you to get a TS stream

an example:

dvbstrem -o -f 12480 -p V -s 27500 1791 1792 > SAT1.ts

will tune to Sat1 on Astra and save the transport stream to a file
called SAT1.ts.


You can take up to eight (right?) streams together from a given
transponder.

As far as I know you can do this with budget cards and also with
full-featured cards when you apply a so called 'budget-patch'.

Searching on this list you can find the link to the budget-patch, but I
never used it, so I can't say it for sure.

I totally agree with your complaints regarding the absolute lack of
documentation.


Good luck.

		Nico


> On Fri, Feb 07, 2003 at 01:04:57PM +0100, Marcus Metzler wrote:
> > There is a program called dvbaudio which is part of dvb-mpegtools (
> > http://www.metzlerbros.org/dvb/index.html). You can either use it to
> > get the audio elementary stream and pipe it into mpg123 or similar
> > programs. 
> 
> The docs I could find in the DVB drivers distribution and 
> dvb-mpegtools don't give much information about how to do this. In 
> fact this whole project (linux-dvb) does not have any good docs or 
> HOWTOs. Files included in the distribution or CVS do not give enough 
> information for somebody who starts using it, and does not want to 
> guess some things or spend next couple of days reading the source. 
> There is no place where somebody who wants to RTFM can do it. There 
> are some www sites around, but all of them either have specific 
> information on some small subject, or out of date (0.8.x drivers for 
> example). 
> 
> In the LinixDVB FAQ I found this: 
> http://www.linuxdvb.tv/documentation/faq/cache/50.html
> 
> Can I get the complete TS (Transport Stream) from the DVB card?
> Yes, but this only works with the budget cards (i.e. WinTV NOVA) which 
> has no built-in MPEG decoder.
> 
> But why it doesn'r tell HOW do I get any stream from the DVB card?
> 
> I searched this list archive, and I had some guesses based on the 
> search results. I wanted to get the sound from CNN:
> 
> miernik@tarnica:~$ szap -n47 -r
> zapping to 'CNN Int.':
> sat 0, frequency = 12168 MHz V, symbolrate 27500000, vpid = 0x00a5, apid = 0x0064
> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
> status 1f | signal c3c3 | snr dada | ber 00000000 | unc ffffffff | FE_HAS_LOCK
> status 1f | signal c6c6 | snr d8d8 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
> status 1f | signal c3c3 | snr dada | ber 00000000 | unc 00000000 | FE_HAS_LOCK
> 
> miernik@tarnica:~$ cat /dev/dvb/adapter0/dvr0 > test.ts
> 
> miernik@tarnica:~$ l test.ts
> -rw-r--r--    1 miernik  miernik         0 Feb  7 19:29 test.ts
> miernik@tarnica:~$ 
> 
> miernik@tarnica:~$ ts2ps 0x00a5 0x0064 < /dev/dvb/adapter0/dvr0 | pes2aud_es > s1.mp3
> ts2ps
> pes2aud_es
> 
> miernik@tarnica:~$ l s1.mp3 
> -rw-r--r--    1 miernik  miernik         0 Feb  7 19:31 s1.mp3
> miernik@tarnica:~$ 
> 
> As you can see, I do not get anything useful. 
> 
> I use newstruct divers from the CVS snapshot of 20030201. 
> At the same time I was seeing the CNN video image in tuxview. 
> 
> What do I do wrong?
> 
> Thanks for help. And this project definetly needs a good, up to date 
> HOWTO. There is no simple way of getting to know why there are 
> "normal" and "NEWSTRUCT" drivers and how they differ.
> 
> -- 
>     Miernik          ____________________________________________________
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