[linux-dvb] Problems seeing video with my DVB card

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Piers Kittel wrote:
> Hello all,
> 
> Have received my Hauppauge Nova-T card, but as it is of the newer one 
> with a Conexant chipset, I had to jump through a lot of hoops to get it 
> to work, and got the kernel driver to work, then followed Martin Smith's 
> excellent DVB howto (http://www.ethics-gradient.net/myth/) - but am 
> stuck at one point, and I can't google for the solution as there's no 
> error message!  I would like to see what I'm doing wrong...
> 
> I am using Debian Sid with the 2.6.11 kernel, with the default debian 
> config file but patched with 
> http://dl.bytesex.org/patches/2.6.11-2/All-2.6.11.diff.gz and all the 
> DVB options selected.  The kernel compiles fine and the module loads 
> without any problems.
> 
> I've used scan to create my channel.conf file, and here's the snippet 
> for BBC1:
> 
> BBC 
> ONE:778166670:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1__32:HIERARCHY_NONE:600:601:4161 
> 
> 
> then tried tzap "BBC ONE" and got:
> 
> piers@desire:~$ tzap "BBC ONE"
> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
> tuning to 778166670 Hz
> video pid 0x0258, audio pid 0x0259
> status 00 | signal ffff | snr c000 | ber 00003fff | unc 00000000 |
> status 01 | signal 3737 | snr c000 | ber 00003fff | unc 00000000 |
> status 1f | signal 3737 | snr ffff | ber 00000000 | unc 00000000 | 
> FE_HAS_LOCK
> status 1f | signal 3737 | snr ffff | ber 00000000 | unc 00000000 | 
> FE_HAS_LOCK
> piers@desire:~$
> 
> So it works just fine.  So that's everything I've done everything in his 
> guide right up until to this point:
> 
> ====================================
> The last two numbers are the IDs of the video and audio stream within 
> the multiplex. We also need the transmission parameters to feed to 
> dvbstream. The command I would use for the channel above is this:
> 
> # dvbstream -o -ps -qam 16 -cr 3_4 600 601 | mplayer -
> ====================================
> 
> So I try:
> 
> dvbstream -o -ps -qam 16 -cr 3_4 600 601 | mplayer -
> 
> I have used 600 and 601 as my line seemed similar to Martin's example, 
> but my line had an extra set of numbers at the end - 4161 - I've also 
> tried the following:
> 
> dvbstream -o -ps -qam 16 -cr 3_4 601 4161 | mplayer -
> 
> but the output from tzap - "video pid 0x0258, audio pid 0x0259" - does 
> seem to suggest 600 and 601 are the right numbers.  Anyway, trying 
> "dvbstream -o -ps -qam 16 -cr 3_4 600 601 | mplayer -" outputs:
> 
> ====================================
> piers@desire:~$ dvbstream -o -ps -qam 16 -cr 3_4 600 601 | mplayer -
> dvbstream v0.5 - (C) Dave Chapman 2001-2004
> Released under the GPL.
> Latest version available from http://www.linuxstb.org/
> Setting filter for PID 600
> Setting filter for PID 601
> Output to stdout
> Streaming 2 streams
> MPlayer 1.0pre7-3.3.5 (C) 2000-2005 MPlayer Team
> CPU: Advanced Micro Devices Athlon MP/XP Thoroughbred (Family: 6, 
> Stepping: 1)
> Detected cache-line size is 64 bytes
> CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
> Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE
> 
> 
> Failed to open /dev/rtc: Permission denied (it should be readable by the 
> user.)
> Playing -.
> Reading from stdin...
> Caught signal 2 - closing cleanly.
> 
> 
> MPlayer interrupted by signal 2 in module: demux_open
> piers@desire:~$
> ====================================
> 
> Seems to be working just fine... the "signal 2" errors are related to me 
> pressing ctrl+c - but my problem is that I can't see *any* picture at 
> all! Any ideas what I'm doing wrong here?
> 
> Thanks very much for your help in advance
> 
> Cheers - Piers
> 
> _______________________________________________
> 
> linux-dvb@xxxxxxxxxxx
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
> 
> 

I went through a similar loop. For a quick test, something like this....
tzap -r -c /channels.conf-dvbt-SuttonColdfield "BBC ONE" &
xine stdin://mpeg2 < /dev/dvb/adapter0/dvr0

For a better way, use kaffeine. Up till yesterday I used March 2005 cvs 
version and yesterday upgraded to the latest cvs version which has a 
smarter layout. kaffeine also has a scan feature which will present you 
with a full list of stations so you can select which ones you need 
permanently.
The 2.6.12-rc4 kernel is complete, you won't need any patches -- AT LAST!.
Regards
Sid.
-- 
Sid Boyce ... Hamradio License G3VBV, Keen licensed Private Pilot
Retired IBM Mainframes and Sun Servers Tech Support Specialist
Microsoft Windows Free Zone - Linux for all Computing Tasks



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