[pvrusb2] Audio problem: DC offset?

[Roger]

Since I've been using the HVR-1950 (very similar to the UK? HVR-1900) alongside 
the pvrusb2 module, I've never seen this problem except for rarely sometimes 
loading the pvrusb2 module (usually during boot) the driver doesn't create the 
/dev/dvb interface, and likely only cold starting the HVR-1950 is then
required to fix.  (Likely a firmware file loading freeze-up is occurring 
somewhere.)

For recording, I use a crontab task to spawn my custom $HOME/bin/record-dvb.sh 
script; which record-dvb.sh simply uses zap (azap) to tune the HVR-1950 and 
then cat/dd to record directly to file using the /dev/dvb device file.  (Most 
other complex recording software such as mplayer/mencoder will additionally 
modify the stream which is also tends to be undesirable instead of recording 
the raw stream.)

If you're looking for reliability when recording, using a method similar to my 
record-dvb.sh might be the absolute best method.  (ie. I record the daily 
evening news, everyday with almost 100% reliability.)

I think Mike might have some experience when the frontend you're using.

I rarely, if ever, view the live TV feed except when testing.  But I do 
understand a majority of users use these USB devices to avoid the use of 
regular TV sets, using a laptop only especially while traveling.  (I did watch 
the live stream using the older or original  "PVRUSB2" Hauppauge USB device, 
and usually when these freezes occurred, the freezing or segfaults were due to 
the complex software from not properly handling the stream, or further upper 
level coding errors.)

The above record-dvb.sh might give an almost absolute reliable method of 
recording, as many of us tend to have time to only watch the news at other 
times.


-- 
Roger
http://rogerx.freeshell.org/