[FFmpeg-user] sound volume normalisation

[jacky]

Le 26/06/2013 02:28, Lou a écrit :
> On Wed, 26 Jun 2013 01:58:43 +0200
> "Bouke \(VideoToolShed\)" <bouke at videotoolshed.com> wrote:
>
>> ----- Original Message -----
>> From: "Moritz Barsnick" <barsnick at gmx.net>
>> To: "FFmpeg user discussions" <ffmpeg-user at ffmpeg.org>
>> Sent: Wednesday, June 26, 2013 12:18 AM
>> Subject: Re: [FFmpeg-user] sound volume normalisation
>>
>>
>>> On Tue, Jun 25, 2013 at 19:56:23 +0200, jacky wrote:
>>>>   1.   demux video , demux audio
>>>>   2.   run lame to find out the sound level
>>> Have you seen ffmpeg's volumedetect filter?
>>> http://www.ffmpeg.org/ffmpeg-filters.html#volumedetect
>>>
>>> The example says it all.
>> Moritz,
>> Not to sound more arrogant than i actually am, I can't praise the Lords of
>> R128 Loudness enough.
>> This  volumedetect is a nice function eg to plot waveforms, (and i did not
>> know about it, so thanks!)
> Also see tools/normalize.py
>
> (I haven't actually investigated or tried it yet though).
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many thanks to all of you ,

I knew volume detect on window, but the linux server
was not up to date (lavfi) was not recognized
and it will be
(by the way is there a way to run the volume detect without lavfi
if you only need mean et max volume values )?

I will then set up the volume based on volumedetect value
and remux

again thanks to these advices
jacky