mirror of
https://github.com/beetbox/beets.git
synced 2025-12-15 13:07:09 +01:00
112 lines
3.9 KiB
ReStructuredText
112 lines
3.9 KiB
ReStructuredText
ReplayGain Plugin
|
|
=================
|
|
|
|
This plugin adds support for `ReplayGain`_, a technique for normalizing audio
|
|
playback levels.
|
|
|
|
.. _ReplayGain: http://wiki.hydrogenaudio.org/index.php?title=ReplayGain
|
|
|
|
|
|
Installation
|
|
------------
|
|
|
|
This plugin can use one of two backends to compute the ReplayGain values:
|
|
GStreamer and mp3gain (and its cousin, aacgain). mp3gain can be easier to
|
|
install but GStreamer support more audio formats.
|
|
|
|
Once installed, this plugin analyzes all files during the import process. This
|
|
can be a slow process; to instead analyze after the fact, disable automatic
|
|
analysis and use the ``beet replaygain`` command (see below).
|
|
|
|
GStreamer
|
|
`````````
|
|
|
|
To use `GStreamer`_ for ReplayGain analysis, you will of course need to
|
|
install GStreamer and plugins for compatibility with your audio files.
|
|
You will need at least GStreamer 1.0 and `PyGObject 3.x`_ (a.k.a. python-gi).
|
|
|
|
.. _PyGObject 3.x: https://wiki.gnome.org/action/show/Projects/PyGObject
|
|
.. _GStreamer: http://gstreamer.freedesktop.org/
|
|
|
|
Then, enable the ``replaygain`` plugin (see :ref:`using-plugins`) and specify
|
|
the GStreamer backend by adding this to your configuration file::
|
|
|
|
replaygain:
|
|
backend: gstreamer
|
|
|
|
mp3gain and aacgain
|
|
```````````````````
|
|
|
|
In order to use this backend, you will need to install the `mp3gain`_
|
|
command-line tool or the `aacgain`_ fork thereof. Here are some hints:
|
|
|
|
* On Mac OS X, you can use `Homebrew`_. Type ``brew install aacgain``.
|
|
* On Linux, `mp3gain`_ is probably in your repositories. On Debian or Ubuntu,
|
|
for example, you can run ``apt-get install mp3gain``.
|
|
* On Windows, download and install the original `mp3gain`_.
|
|
|
|
.. _mp3gain: http://mp3gain.sourceforge.net/download.php
|
|
.. _aacgain: http://aacgain.altosdesign.com
|
|
.. _Homebrew: http://mxcl.github.com/homebrew/
|
|
|
|
Then, enable the plugin (see :ref:`using-plugins`) and specify the "command"
|
|
backend in your configuration file::
|
|
|
|
replaygain:
|
|
backend: command
|
|
|
|
If beets doesn't automatically find the ``mp3gain`` or ``aacgain`` executable,
|
|
you can configure the path explicitly like so::
|
|
|
|
replaygain:
|
|
command: /Applications/MacMP3Gain.app/Contents/Resources/aacgain
|
|
|
|
|
|
Configuration
|
|
-------------
|
|
|
|
To configure the plugin, make a ``replaygain:`` section in your
|
|
configuration file. The available options are:
|
|
|
|
- **auto**: Enable ReplayGain analysis during import.
|
|
Default: ``yes``.
|
|
- **backend**: The analysis backend; either ``gstreamer`` or ``command``.
|
|
Default: ``command``.
|
|
- **overwrite**: Re-analyze files that already have ReplayGain tags.
|
|
Default: ``no``.
|
|
- **targetlevel**: A number of decibels for the target loudness level.
|
|
Default: 89.
|
|
|
|
These options only work with the "command" backend:
|
|
|
|
- **apply**: If you use a player that does not support ReplayGain
|
|
specifications, you can force the volume normalization by applying the gain
|
|
to the file via the ``apply`` option. This is a lossless and reversible
|
|
operation with no transcoding involved.
|
|
Default: ``no``.
|
|
- **command**: The path to the ``mp3gain`` or ``aacgain`` executable (if beets
|
|
cannot find it by itself).
|
|
For example: ``/Applications/MacMP3Gain.app/Contents/Resources/aacgain``.
|
|
Default: Search in your ``$PATH``.
|
|
- **noclip**: Reduce the amount of ReplayGain adjustment to whatever amount
|
|
would keep clipping from occurring.
|
|
Default: ``yes``.
|
|
|
|
Manual Analysis
|
|
---------------
|
|
|
|
By default, the plugin will analyze all items an albums as they are implemented.
|
|
However, you can also manually analyze files that are already in your library.
|
|
Use the ``beet replaygain`` command::
|
|
|
|
$ beet replaygain [-a] [QUERY]
|
|
|
|
The ``-a`` flag analyzes whole albums instead of individual tracks. Provide a
|
|
query (see :doc:`/reference/query`) to indicate which items or albums to
|
|
analyze.
|
|
|
|
ReplayGain analysis is not fast, so you may want to disable it during import.
|
|
Use the ``auto`` config option to control this::
|
|
|
|
replaygain:
|
|
auto: no
|