[mythtv-users] Volume Discrepancy

Ken Mink ken.mink at gmail.com
Thu Jul 26 18:04:13 UTC 2012

On 07/24/2012 05:11 PM, Michael T. Dean wrote:
> On 07/23/2012 10:57 AM, Ken Mink wrote:
>>     I am running v0.25.2 on CentOS6.3. I have a PVR-500, a HDHomerun
>> and a HVR-2250 all attached to the same TWC feed. The problem I am
>> working on is a serious volume discrepancy between the PVR-500 and the
>> analog side of the HVR-2250. They are record from the same feed, but
>> the recordings and livetv from each have a serious difference in audio
>> volume. I've looked at the recording profiles, but they both use the
>> "MPEG-2 Encoders (PVR-x50, PVR-500)" group. I don't see how to assign
>> a different group or different profiles to each card. How can I do
>> this or is there some other way to set the recording volumes
>> differently for each card.
> There's no way to associate recording profiles to capture 
> cards--they're associated with specific recording rules.
> Therefore, your only option is to either live with it or run some kind 
> of script after MythTV starts recording to set the volume 
> appropriately on your capture cards.  You can either use a script 
> spawned by the external channel change script or one spawned by a 
> Recording Started system event, and have it sleep for a while (5, 10 
> or 20s or ...) then adjust the volume.  You probably want to have 
> MythTV set the "lower" volume properly and then have the script 
> increase the volume on the quieter cards so that you're not blown out 
> of the chair by the loud volume for the first 20s.
> Mike

Thanks for the help, Mike. So would I have the script update the 
recording level in the database before the recording starts? Using that 
method I could set specific values for specific cards. I haven't been 
able to find where the recording level is stored for the recording profiles.


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