[linux-dvb] Re: dvbtune / Nova-T unable to lock on frequencyproblems

[Holger Waechtler <holger@convergence.de>]

Bruno Prior wrote:
> Hi Holger,
>
> Holger Waechtler wrote:
>  >
>  > please use tzap for simple testing, it's output is a little more
>  > informative when looking for problems...
>
> Here's the latest outputs from tzap/dvbtune (you may remember this is an 
> ongoing saga since Christmas, and DVB-T has never got close to working 
> in that time). This is now with Mandrake 9.1 (stock kernel 
> 2.4.21-0.13mdk), linuxtv-dvb-1.0.0-pre2 and recent dvbtune from CVS. The 
> drivers, tzap and dvbtune all appear to compile cleanly.
>
> [root@localhost szap]# ./tzap BBC-1
> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
> tuning to 505833334 Hz
> status 07 | signal 2f2f | snr e8e8 | ber 0000ffff | unc 00000004 |
> status 1f | signal 2f2f | snr e8e8 | ber 0000003a | unc 00000000 | 
> FE_HAS_LOCK
> status 1f | signal 2f2f | snr e8e8 | ber 00000043 | unc 00000000 | 
> FE_HAS_LOCK
> status 1f | signal 2f2f | snr e8e8 | ber 00000042 | unc 00000000 | 
> FE_HAS_LOCK
looks fine, your card tuned and everything is running, so what exactly 
is your problem?

In order to record your stream you could for example use 'tzap -r':

$ ./tzap -r BBC-1
[and let it run forever...]

now tap in another console:

$ cat /dev/dvb/adapter0/dvr0 > /tmp/recording.ts
[recording.ts contains the your Transport Stream with Audio and Video data]

if you want to decode the stream to your X screen try:

$ cat /tmp/recording.ts | ts2ps 0 0 | mplayer -
[ts2ps is part of the mpegtools, you get it from 
http://www.metzlerbros.org/dvb/index.html]
[play with the mplayer options in order to get it decoded smoothly, I 
use something like 'mplayer -ao oss -vo xv -vfm ffmpeg -framdrop -vop 
lavcdeint - ', read the mplayer manpage for details]

well, enought testing - from now on you probably want to watch out for a 
more comfortable solution and add MPEG-software-decoding support to VDR 
or Enigma...
:)

Holger



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