[mythtv-users] tinny/scratchy sound with latest SVN build

[Paul Archer]

I recently upgraded to the latest SVN release. (I usually don't have any 
issues doing this.)
This time, though, I'm getting tinny/scratchy sound randomly from each tuner 
card (three PVR-150). I can switch from tuner to tuner, and get bad sound 
about 1/4 of the time.
I'm also getting this in my logs now:
2007-03-30 10:54:06.193 ret_pid(6196) child(6196) status(0x0)
2007-03-30 10:54:06.193 External Tuning program exited with no error
2007-03-30 10:54:06.310 MPEGRec(/dev/video2) Warning: Audio sample rate 
32000 Hz
                         is not supported by ivtv driver, using 48000 Hz 
instead.
2007-03-30 10:54:06.315 MPEGRec(/dev/video2) Error: Could not set Audio 
Sampling Frequency to 1
                         eno: Invalid argument (22)
2007-03-30 10:54:06.316 MPEGRec(/dev/video2) Error: Could not set Video 
Aspect ratio to 1
                         eno: Invalid argument (22)
2007-03-30 10:54:06.317 MPEGRec(/dev/video2) Error: Could not set Audio 
Encoding to 1
                         eno: Invalid argument (22)
2007-03-30 10:54:06.318 MPEGRec(/dev/video2) Error: Could not set Audio L2 
Bitrate to 13
                         eno: Invalid argument (22)
2007-03-30 10:54:06.318 MPEGRec(/dev/video2) Error: Could not set Video 
Average Bitrate to 4000000
                         eno: Invalid argument (22)
2007-03-30 10:54:06.319 MPEGRec(/dev/video2) Error: Could not set Video Peak 
Bitrate to 5500000
                         eno: Invalid argument (22)
2007-03-30 10:54:06.320 MPEGRec(/dev/video2) Error: Could not set MPEG 
Stream type to 0
                         eno: Invalid argument (22)
2007-03-30 10:54:06.320 MPEGRec(/dev/video2) Warning: Unable to get 
V4L2_CID_MPEG_VIDEO_GOP_SIZE, defaulting to 12
                         eno: Invalid argument (22)
2007-03-30 10:54:06.321 MPEGRec(/dev/video2) Warning: VBI recording with 
broken drivers.
                         Upgrade to ivtv 0.10.0 if you experience problems.
2007-03-30 10:54:06.410 MPEGRec(/dev/video2) Warning: Can't enable VBI 
recording (5)
                         eno: Invalid argument (22)


I know this mentions upgrading to ivtv 0.10.0, but I can't right now, as I 
don't have a recent enough kernel. (0.10.0 needs 2.6.16 or better, and I'm 
running 2.6.16.) I um unwilling to upgrade my kernel just yet, as I don't 
have a current backup, and I'm out of town for the week, so if the machine 
doesn't boot, i'm hosed.

I tried to go into my recording profiles and change the sample rate from 
32000 to 48000Hz, but that box is greyed out. So, I went directly into the 
database, and changed the 'samplerate' in the 'codecparams' table.

That got rid of the warning about the sample rate, but the rest looks the 
same.

Paul



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  Never ascribe to malice what can perfectly
  well be explained by stupidity. -Anonymous
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