vorbisgain(1) VorbisGain vorbisgain(1)NAMEvorbisgain - calculate the replay gain for Ogg Vorbis files
SYNOPSISvorbisgain [ -acCdfhqrsv ] [ -g album gain ] input_files ...
DESCRIPTIONvorbisgain calculates the ReplayGain values for the named Ogg Vorbis
input files and writes back the result in the form of tags (comments)
in the file. These values can be used by a playback program to maintain
a uniform sound level during play. (See http://www.replaygain.org/ for
more information.) vorbisgain uses a default target level of 89 dB,
rather than the 83 dB recommended by the ReplayGain standard, when cal‐
culating the gain to apply. (Some players include a pre-amplification
setting with which the target level can be changed.)
vorbisgain input files must be Ogg Vorbis I files with 1 or 2 channels
and a sample rate of 48 kHz, 44.1 kHz, 32 kHz, 24 kHz, 22050 Hz, 16
kHz, 12 kHz, 11025 Hz or 8 kHz. If an input file contains multiple
streams (i.e., it is chained), the streams must all have the same for‐
mat, in terms of sampling frequency and number of channels.
All streams in a chained file are processed, but the ReplayGain tags
are only written to (or removed from) the first stream.
OPTIONS-h, --help
Show command help.
-a, --album
Activates album mode, in which the album gain (sometimes called
the audiophile gain) is calculated in addition to the track gain
(sometimes called the radio gain).
-g n, --album-gain=n
Sets the album gain value to use. Default is to calculate it, if
-a is specified. Implies -a in the sense that the album gain tag
is written. This is a relative value, in dB, specifying the
change in volume that should be applied.
-c, --clean
Remove any ReplayGain tags from the specified files. If a file
does not contain any ReplayGain tags, the file is not modified.
-C, --convert
Convert old format ReplayGain tags to a new format (see section
TAG FORMAT below for details). If a file does not contain all
ReplayGain tags that are needed for a conversion, the file is
not modified. The album peak tag is only created if -a is speci‐
fied, and the album gain value is then checked for concistency.
Otherwise any album gain is converted without any checks.
-d, --display-only
Display the result only; do not write anything to disk. This
applies to all options.
-f, --fast
Only calculate the gain for files that do not contain all replay
gain tags needed (the album gain and peak tags are only consid‐
ered if -a has been specified).
-n, --no-progress
Only display results, but don't show progress in percentages and
times. This can be useful if the output is piped into other pro‐
grams.
-q, --quiet
Do not display any output while processing. Only error and warn‐
ing messages will be printed.
-r, --recursive
Enter directories (recursively) and search for files, if direc‐
tories or file patterns are specified. Note: Only available if
vorbisgain was configured with --enable-recursive.
-s, --silent
Sliently skip any non-Vorbis files found. Vorbis files that
can't be processed for some reason are skipped as well, though
not silently. Default is to stop when such files are encoun‐
tered.
-v, --version
Display the version of the program.
EXAMPLES
Simplest version. Calculate the track gain and peak only.
vorbisgain somefile.ogg
Note that the following examples are only possible if vorbisgain was
configured with --enable-recursive.
Calculate the album gain and peak, in addition to the track gain and
peak, for all .ogg files in the directory "music" (and all subdirecto‐
ries). All files in one directory are treated as belonging to the same
album. Files that already have ReplayGain tags are not re-calculated.
Note the quotes, as they cause the shell to not do any filename glob‐
bing:
vorbisgain-a -f -r "music/*.ogg"
Calculate the album gain. The files specified before the directory
"album" are treated as one album, the files in the directory "album" as
another album and the remaining files as a third album:
vorbisgain-a -r a.ogg b.ogg c.ogg album d.ogg e.ogg f.ogg
Remove all replaygain tags from a collection of oggs:
vorbisgain-c -r "music/*.ogg"
TAG FORMATvorbisgain creates tags like these (when in -a mode):
REPLAYGAIN_TRACK_GAIN=-7.03 dB
REPLAYGAIN_TRACK_PEAK=1.21822226
REPLAYGAIN_ALBUM_GAIN=-6.37 dB
REPLAYGAIN_ALBUM_PEAK=1.21822226
Gain specifies how much the volume should be changed before playback,
in dB. Peak is the maximum sample value of the file before any gain
has been applied, where 1.0 means "full sample value" (32,767 when
decoding to signed 16 bit samples).
Earlier versions of vorbisgain (before 0.30) created the following
tags:
RG_RADIO
RG_PEAK
RG_AUDIOPHILE
When -c is used, RG_RADIO is converted to REPLAYGAIN_TRACK_GAIN,
RG_PEAK to REPLAYGAIN_TRACK_PEAK, RG_AUDIOPHILE to REPLAY‐
GAIN_ALBUM_GAIN and REPLAYGAIN_ALBUM_PEAK is calculated as the maximum
of all RG_PEAK tags in the album.
AUTHORS
Program Code:
Gian-Carlo Pascutto <gcp@sjeng.org>
Magnus Holmgren <lear@algonet.se>
ReplayGain Analysis Code:
Glen Sawyer <glensawyer@hotmail.com>
Frank Klemm (http://www.uni-jena.de/~pfk/)
Man Page:
Magnus Holmgren <lear@algonet.se>
BUGS
None known.
SEE ALSO
http://sjeng.org/vorbisgain.html
Home page for VorbisGain. The latest version, and a Windows exe‐
cutable, can be found here.
http://www.replaygain.org/
Contains detailed information about ReplayGain and how it is
calculated.
http://www.hydrogenaudio.org/
Discussion forum for audio compression and related issues,
including Ogg Vorbis and VorbisGain.
2004 Jan 3 vorbisgain(1)
