18 Apr
2016
18 Apr
'16
1:37 p.m.
On Mon, Apr 18, 2016 at 13:12:36 +0900, PSPunch wrote:
1. Measure LUFS using BS1770GAIN. http://bs1770gain.sourceforge.net/
ffmpeg's "ebur128" filter handles a subset of this, apparently. I'm sure it would appreciate some additional algorithms. Patch welcome. ;-)
2. Transcode the source with FFmpeg with "--vol" option using values parsed earlier.
I'm not aware of that option (ffmpeg doesn't even support double-dash options?), but you can use the "volume" audio filter: [...] -af volume="7.3 dB" [...] or something like that. And don't forget to avoid clipping, unless that doesn't matter to you. Moritz