[mythtv-users] disable volume osd

[Nick Morrott]

On 14/11/2008, Pat Pierce <raker1000 at gmail.com> wrote:
> Is there any simple way to turn off the Volume OSD, specifically in the
> DVD player? It's not a big deal for regular tv programs, but when I'm
> having friends over watching movies on my mythtv projector setup,
>  I like to keep intrusions to a minimum. The other OSD components
> don't matter, like when skipping chapters or fast forwarding, because
> it already breaks the immersion, so that's no big deal, but sometimes
>  the volume gets too loud or quiet, and I would like to be able to tweak
> the sound without a glaring big indicator breaking the watchers'
> concentration.

One way to accomplish this across all of MythTV is to disable "Use
internal volume controls" in the particular mythfrontend's
configuration. You can bind your VOL+/VOL- remote keys to scripts
which control the ALSA system/PCM volume using amixer directly.

A script which increases the ALSA PCM volume by 5% each time it is
called could be:

#!/bin/bash
/path/to/amixer - c 0 set PCM 5%+

The amixer manpage contains the details. These will not show anything
on the screen (so not trigger the OSD) but should accomplish what you
want.

The straightforward 'hardware' way is to use an AV receiver/amp that
takes an S/PDIF input from the frontend, and use the receiver's remote
to control the volume completely external to the PC.

Nick

-- 
Nick Morrott

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