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Date:      Thu, 29 Sep 2011 17:27:49 +0000
From:      Alexander Best <arundel@freebsd.org>
To:        Polytropon <freebsd@edvax.de>
Cc:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: Volume control in mplayer resetting 50% when starting / stopping video clips
Message-ID:  <20110929172748.GA6639@freebsd.org>
In-Reply-To: <20110929062327.e2540d4b.freebsd@edvax.de>
References:  <20110929062327.e2540d4b.freebsd@edvax.de>

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On Thu Sep 29 11, Polytropon wrote:
> Since I've installed OS v8.2 (STABLE of late August), mplayer
> has developed an annoying habit: It "accidentally" resets its
> volume settings.
> 
> I have the following configuration: The "vol" (master) channel
> of the mixer is controlled by the volume keys on the top right
> of my keyboard (Sun Type 7 USB) by issuing "mixer vol +5",
> "mixer vol -5" and "mixer vol 0" respectively. Worked for
> many years.
> 
> When I use the keys 9 and 0 in mplayer, they _should_ modify
> the volume of the "pcm" channel - at least they did this in
> the previous mplayer 0.9something version I've been using many
> years on on OS v7.
> 
> They do - as it seems - now too, but: when I move within
> the movie clip, they reset to some 50% value.
> 
> Example: I set the volume slider to this value:
> 
> 	[|||---------------------------------------]
> 
> Now I press the left or right arrow key, or the space bar
> twice, then the volume gets up to the 50% value:
> 
> 	[||||||||||||||||||||||||------------------]
> 
> This is ANNOYING.
> 
> Does anyone know a solution for this?

try 'sysctl hw.snd.vpc_autoreset=0'.

cheers.
alex

> 
> I'm using mplayer-1.0.r20110329_3 compiled from ports.
> 
> Audio driver is:
> 	pcm0: <HDA VIA VT1708_8 PCM #0 Analog> (play/rec) default
> 	pcm1: <HDA VIA VT1708_8 PCM #1 Analog> (rec)
> 	pcm2: <HDA VIA VT1708_8 PCM #2 Digital> (play)
> 
> Strangest thing: I can see values change in the output of
> the "mixer" command when changing the "vol" volume, but
> not if I change the volume from inside mplayer.
> 
> 
> 
> NB: The _difference_ between "pcm" and "vol" is known to me.
> I _intendedly_ use different setting mechanisms, i. e. "vol"
> defines the maximum output level transmitted to the amplifier,
> and "pcm" can be used to change the volume within the range
> from zero up that "preset master value". I know that it's
> possible to have the 9/0 keys change the "vol" (master)
> channel, but that's not intended - nor does it seem to be
> a solution here.
> 
> 
> 
> 
> -- 
> Polytropon
> Magdeburg, Germany
> Happy FreeBSD user since 4.0
> Andra moi ennepe, Mousa, ...



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