Is there any video player that can normalize the sound?

i92guboj

Hello,

Don't you all hate when the volume of a given film grows suddenly making the entire edifice tumble? I do. So, I am searching for a video player (preferably xine or mplayer based) which can normalize the sound stream of a video file, so, the whole film is played with the same level of loudness. I could use the normalize command line tools, but then I would need to modify the video files, which I don't want to do if it can be helped.

I don't know if xine or mplayer could do this. Or if there's any way around it at all. This feature shouldn't be difficult to add to any existing project, so if I can't find a solution, maybe I will try to do my own.

So, feel free to share any ideas.

Thanks beforehand.

EDITED: It seems that mplayer has support for LADSPA plugins, but the feature is not too well documented, which is a pity. Also, the LADSPA docs only tell you what the purpose of each plugin is, but they don't tell you the syntax they use. You can tell mplayer to use a plugin this way:

yngwin · Posted: Sun May 18, 2008 11:38 am Post subject:

`mplayer -af volnorm`
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i92guboj · Posted: Sun May 18, 2008 12:04 pm Post subject:

SeaTiger · Posted: Mon May 19, 2008 6:55 am Post subject:

smplayer (gui for mplayer) support that option.

pappy_mcfae · Posted: Mon May 19, 2008 8:01 am Post subject:

If you add 'a52' to your USE flags, and emerge media-libs/a52dec, gxine allows you to use dynamic range compression, which is what stops the effect you're noticing. I'm sure mplayer works with the a52 USE flag as well, but I'm not really into mplayer, so someone who knows it better will have to say whether or not you can use a52 dynamic compression.

Blessed be!
Pappy
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i92guboj · Posted: Mon May 19, 2008 8:10 am Post subject:

Nice information.

Thanks a lot to everyone, I will be checking all these possibilities. Probably I will be using an mplayer based one because mplayer is what I use most of the time, unless for DVD's and series (I use kaffeine for that).

Thanks again

pappy_mcfae · Posted: Wed May 21, 2008 6:41 pm Post subject:

You're welcome.

Blessed be!
Pappy
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i4dnf · Posted: Thu May 22, 2008 7:51 am Post subject:

Kaffeine has access to the xine filters. Press "x" when playing and you get a filters dialog, in the sound category you can choose volnorm, which has two methods for normalising sound.
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i92guboj · Posted: Thu May 29, 2008 3:35 pm Post subject:

Volume normalization works but efectively is not what I was wanting.