TOOL » FFMPEG

ReplayGain

Last updated:
Reference:wiki.hydrogenaud.io

Metadata only ​

A general tool that can be used with any audio format is rsgain.

For specific audio formats (reference):

  • vorbisgain: vorbisgain -a *.ogg
  • metaflac: metaflac --add-replay-gain *.flac
  • mp3gain: mp3gain -a *.mp3

Changing audio ​

Using this superuser answer as reference, some useful audio filters are:

  • loudnorm
  • dynaudnorm
  • speechnorm

If all you want is to detect the current volume:

shell
ffmpeg -i video.avi -af "volumedetect" -vn -sn -dn -f null /dev/null

Then based on the mean_volume and max_volume, apply the volume audio filter.