[mythtv-users] wintv-pvr-usb2 audio clipping [solved]

[Rich West]

On 05/22/2012 03:37 PM, Michael T. Dean wrote:
> On 05/22/2012 10:18 AM, Rich West wrote:
>> Interesting information.. thanks, Mike!
>>
>> Anyone know if there is a V4L2 UI setting within mythbackend?
>>
>> The approval factor went down a bit when the recordings from that device
>> started blasting everyone in the room.  I've noticed that I'm seeing a
>> lot of the following in dmesg, which results in the audio being reset
>> back to the screemingly loud and very clipped default.  So, I put a very
>> crude hack in to reset the audio back to a more comfortable setting
>> every 3 minutes and after each channel change.  However, I admit it is a
>> crappy hack, and it still results in the initial 3 minutes of audio
>> screaming in its clipped way at everyone..
>>
>> I wasn't able to find any module settings while allowed for passing any
>> defaults for audio.. :(
>>
>> I'm tempted to upgrade the machine, effectively undoing my move from one
>> of my PVR-150's to the USB PVR, to handle all of the hardware (3 PCI
>> PVR-150's, 5 SATA drives), but finding a motherboard with those specs
>> while staying on the cheap hasn't been easy. :-(
>
> On the capture card configuration in mythtv-setup for V4L (not DVB)
> capture devices, there's a setting to tell MythTV not to set the
> volume of the capture card.
>
> Do not adjust volume
> Enable this option for budget BT878 based DVB-T cards such as the
> AverTV DVB-T which require the audio volume to be left alone.
>
> (where I assume it talks about using the analog/V4L side of DVB-T
> cards--likely a cheap frame grabber?)
>
> Mike

Thanks again!  I'll test that out this evening.  I had set the capture
card as an MPEG2 capture device, like the PVR-150's.

-Rich