Arch Linux

Milena

Member

Registered: 2010-04-02

Posts: 67

On-The-Fly Volume Normalize with MPlayer/ALSA

Hi

Is there anything i can install or setup for Mplayer/ALSA to achieve a live-normalisation of the volume when watching movies ?
It annoys me to fiddle with the volume slider every few seconds when i watch movies especially when the actors whisper so quiet that i have to raise the vol to the max and the next second an action scene occurs and my eardrum explodes.

I only found this so far:
http://www.miscfits.com/2009/09/normali … audio.html
Will the steps described on the link work on Arch ?

I would rather like something I can easily turn on and off or make it for MPlayer only and not a global setting (if possible).

Thanks in advance

skottish

Forum Fellow

From: Here

Registered: 2006-06-16

Posts: 7,942

Re: On-The-Fly Volume Normalize with MPlayer/ALSA

For AC3 audio streams (most DVDs) a52dec can do it and Mplayer has its own internal version. I've never used it before, so I'll defer to the man page:

-a52drc <level>
              Select  the  Dynamic  Range  Compression level for AC-3 audio streams.  <level> is a float value ranging from 0 to 1, where 0
              means no compression and 1 (which is the default) means full compression (make loud passages more  silent  and  vice  versa).
              This option only shows an effect if the AC-3 stream contains the required range compression information.

moljac024

Member

From: Serbia

Registered: 2008-01-29

Posts: 2,676

Re: On-The-Fly Volume Normalize with MPlayer/ALSA

I hate that with movie makers. Sometimes I want to shoot somebody in the leg.

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The day Microsoft makes a product that doesn't suck, is the day they make a vacuum cleaner.
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ngoonee

Forum Fellow

From: Between Thailand and Singapore

Registered: 2009-03-17

Posts: 7,356

Re: On-The-Fly Volume Normalize with MPlayer/ALSA

They record for theaters, what else would you expect?

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qubodup

Member

Registered: 2008-01-19

Posts: 66

Re: On-The-Fly Volume Normalize with MPlayer/ALSA

"-a52drc <level>" This did not have any effect for a video file I was watching.

mplayer -af volnorm=2:0.75 FooVideo.flv

Solves it for me.

From Normalize volume output in MPlayer , found via google.com/search?q=mplayer+normalize (this thread is the first, commandlinefu was the second)

Last edited by qubodup (2012-05-24 13:20:26)

brebs

Member

Registered: 2007-04-03

Posts: 3,742

Re: On-The-Fly Volume Normalize with MPlayer/ALSA

See old thread.

And in ~/.mplayer/config:

ao=alsa:device=movie