Hi,
It does re-encode, you can use flat wav (PCM) style which should limit
any losses. As I was doing this for video, I set ffmpeg to do a
straight video copy and only re-encode the audio. I didn't notice any
degradation but I'm not an audio purist so your ears may vary.
Regards,
Wayne
On 17/02/16 21:15, Jim Stewart wrote:
Wow! I never thought of using ffmpeg for this. I especially like the way you can tweak parameters that compute the
"average RMS" adjustment desired. Does this always re-transcode the file (granted "re-transcoding"
an uncompressed audio file should be close to lossless), or will it simply losslessly (and quickly, and reversibly) set
a single "track gain" parameter to a file format that supports such a thing like the way "mp3gain"
does?
Date: Wed, 17 Feb 2016 14:34:00 +0000
From: Wayne Merricks <[email protected]>
To: [email protected]
Subject: Re: [RDD] r128gain - integration
Message-ID: <[email protected]>
Content-Type: text/plain; charset=windows-1252; format=flowed
I had to do some audio normalisation (loudness/RMS) on a batch of videos
recently. I used ffmpeg to automate the process but you have to be careful
what you're doing as you can overcook it.
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