[vdr] No Audio on ATSC Qam256 or OTA..

Rob Davis rob at davis-family.info
Tue Jun 23 02:33:10 CEST 2009


I've just moved to the US from Europe and trying to get my head around 
ATSC. I have a Hauppauge HVR950q which works in Windoze and Linux (With 
Kaffeine) and almost with VDR (my preferred platform).

I have it normally connected to Comcast cable which should pipe through 
a bunch of FTV channels using QAM256. These I can see and hear in 
kaffeine with AC97 audio. However, in VDR it appears to change the pids 
automatically so that the audio stops working. If I manually change VDR 
to not auto update and put the APID in then it squeeks rather than 
works. However, streaming to mplayer using streamdev seems to work. (It 
does the same this with OTA channels too - although I can only get 4 
with a portable antenna.)

I am using Ubuntu's VDR source 1.6.0 something or other, but patched 
with the ATSC patch.

I had a really hard time trying to work out the channels.conf file, and 
in the end settled for something like:

WIFR-Wx�;(null):495000:M256:C:0:1984:0:0:0:2:0:0:0
WQRF-DT�;(null):495000:M256:C:0:2048:0:0:0:3:0:0:0
WIFR-HD�;(null):495000:M256:C:0:2112:0:0:0:1:0:0:0

This is after VDR has eaten the audio pid away. Normally this is one 
number higher than the vpid. So for WIFR 1985, WQRF 2049 etc.

I'm willing to believe I've cocked it up as nothing I had would 
automatically scan the QAM channels. In the end I used scan and it added 
"VDR Doesn't support ATSC yet" instead of M256:C:0.

Thanks guys... Fairly soon my shipping will arrive from Italy with my 
main server, sat cards and Hauppauge MVP's to stick around the house. I 
wonder what could possibly go wrong?



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