[mythtv-users] Detecting unencrypted HD channels

[R. G. Newbury]

William Powell wrote:
> i understand that this hardware isn't even close to being fast enough to 
> view hd format video. this hardware is only intended as a recording 
> backend. at this point I am only trying to determine what my available 
> unencrypted HD channels are.

Lets be clear here. You really mean unencrypted DIGITAL channels, don't 
you?  That is, SD and/or HD?

  >
> I am following the procedures outlined in the mythtv wiki at: 
> http://www.mythtv.org/wiki/index.php/Adding_QAM_Channels_For_HDTV_Tuner_Cards
> 
> I have scanned for channels using atscscan and got a channels.conf with 
> 233 detected channels. here is a small sample of this channels.conf:
> [000-0002]:561000000:QAM_256:2112:2113:2
> [001-0003]:561000000:QAM_256:2176:2177:3
> [002-0004]:561000000:QAM_256:2240:2241:4
> [003-0005]:561000000:QAM_256:2304:2305:5
> [004-0006]:561000000:QAM_256:2368:2369:6
> [005-0007]:561000000:QAM_256:2432:2433:7
> [006-0009]:561000000:QAM_256:2496:2497:9
> [007-000a]:561000000:QAM_256:2560:2561:10
> [008-000b]:561000000:QAM_256:2624:2625:11
> [009-000c]:561000000:QAM_256:2688:2689:12
> [00a-0001]:561000000:QAM_256:2048:2049:1
> [00b-000d]:567000000:QAM_256:2048:2049:13
> 
> Using azap to tume one of the channels returns the following:
> 
> azap [00b-000d]
> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
> tuning to 567000000 Hz
> video pid 0x0800, audio pid 0x0801

> status 1f | signal ef9c | snr fd53 | ber 00000000 | unc 00000000 | 
> FE_HAS_LOCK
> 
> So at this point I am assumming that I have a tuner card that is 
> working. When I try to play the stream using: 


>mplayer -nosound > /dev/dvb/adapter0/dvr0

You have this step wrong. You can either:

cat /dev/dvb/adapter0 > test.mpg for a while, then ctrl-C to kill it, 
and then mplayer test.mpg

which should give you a video+audio output, OR

you can try:

mplayer -vid ox0800 -aid -0x801 /dev/dvb/adapter0   (I cannot remember 
if you need a '<' in front of the '/dev/' portion of that line.

mplayer is failing because it does not know which digital stream to 
extract from the total stream.

Geoff