[pulseaudio-discuss] volume control of a playback stream ...

Colin Guthrie gmane at colin.guthr.ie
Tue Jun 24 02:37:00 PDT 2008

cal wrote:
> Colin Guthrie wrote:
>> cal wrote:
>>> As far as I can tell, you can set the volume of a stream when you set it up, but 
>>> once it's in play so to speak, you can't change the per channel volume on the 
>>> fly. Does that seem right, or am I missing something?
>> What do you mean "When you set it up"? pavucontrol can change the volume 
>> of any running stream - or are you talking about from an API level? 
>> Regardless you can change the volume of a running stream no problem.
>> The tricky bit is trying to catch a stream that is very short - like 
>> sound events. To adjust their volume is pretty tricky!
>> This limitation is being addressed tho'. (AFAIK).
> Thanks, I did mean from the API level. If it's possible to do it, then
> I'll figure it out, so thanks for that. I figured it had to be possible.

Are you using the Simple API? It's not as flexible as the full blooded 
one. It's defo possible in some capacity but I couldn't tell you how (or 
if the Aimple API supports it)

I'm sure someone more knowledgeable will pitch in soon :)


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