Ruby interface for the TagLib C++ library, for reading and writing meta-data (tags) of many audio formats.
In contrast to other libraries, this one wraps the full C++ API, not only the minimal C API. This means that all tag data can be accessed, e.g. cover art of ID3v2 or custom fields of Ogg Vorbis comments.
taglib-ruby currently supports the following:
- Reading/writing common tag data of all formats that TagLib supports
- Reading/writing ID3v1 and ID3v2 including ID3v2.4 and Unicode
- Reading/writing Ogg Vorbis comments
- Reading/writing MP4 tags (.m4a)
- Reading audio properties (e.g. bitrate) of the above formats
Contributions for more coverage of the library are very welcome.
Before you install the gem, make sure to have taglib 1.11.1 or higher installed with header files (and a C++ compiler of course):
sudo apt-get install libtag1-dev
sudo dnf install taglib-devel
brew install taglib
sudo port install taglib
gem install taglib-ruby
Depending on your brew setup, TagLib might be installed in different locations, which makes it hard for taglib-ruby to find it. To get the library location, run:
$ brew info taglib taglib: stable 1.12 (bottled), HEAD Audio metadata library https://taglib.org/ /usr/local/Cellar/taglib/1.12 (122 files, 1.5MB) * ...
Note the line with the path at the end. Provide that using the
environment variable when installing, like this:
TAGLIB_DIR=/usr/local/Cellar/taglib/1.12 gem install taglib-ruby
Another problem might be that
clang++ doesn't work with a specific version
of TagLib. In that case, try compiling taglib-ruby's C++ extensions with a
TAGLIB_RUBY_CXX=g++-4.2 gem install taglib-ruby
Complete API documentation can be found on rubydoc.info.
Begin with the
sudo dnf install taglib-devel ruby-devel gcc-c++ redhat-rpm-config swig
Install dependencies (uses bundler, install it via
gem install bundler
if you don't have it):
Regenerate SWIG wrappers if you made changes in
.i files (use version 3.0.7 of
SWIG - 3.0.8 through 3.0.12 will not work):
Force regeneration of all SWIG wrappers:
touch ext/*/*.i rake swig
rake clean compile
Run irb with library:
irb -Ilib -rtaglib
Build and install gem into system gems:
Build a specific version of Taglib:
PLATFORM=x86_64-linux TAGLIB_VERSION=1.11.1 rake vendor
The above command will automatically download Taglib 1.11.1, build it and
install it in
compile tasks can then be executed against that specific
version of Taglib by setting the
TAGLIB_DIR environment variable to
$PWD/tmp/x86_64-linux/taglib-1.11.1 (it is assumed that taglib headers are
$TAGLIB_DIR/include and taglib libraries at
test task can then be run for that version of Taglib by adding
$PWD/tmp/x86_64-linux/taglib-1.11.1/lib to the
To do everything in one command:
PLATFORM=x86_64-linux TAGLIB_VERSION=1.11.1 TAGLIB_DIR=$PWD/tmp/x86_64-linux/taglib-1.11.1 LD_LIBRARY_PATH=$PWD/tmp/x86_64-linux/taglib-1.11.1/lib rake vendor compile test
- Check out the latest
mainbranch to make sure the feature hasn't been implemented or the bug hasn't been fixed yet.
- Check out the issue tracker to make sure someone hasn't already requested it and/or contributed it.
- Fork the project.
- Start a feature/bugfix branch from
- Commit and push until you are happy with your contribution.
- Make sure to add tests for it. This is important so that I don't break it in a future version unintentionally.
rubocoplocally to lint your changes and fix the issues. Please refer to .rubocop.yml for the list of relaxed rules. Try to keep the liniting offenses to minimum. Preferably, first run
rubocopon your fork to have a general idea of the existing linting offenses before writing new code.
- Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.
Copyright (c) 2010-2020 Robin Stocker and others, see Git history.
taglib-ruby is distributed under the MIT License, see
LICENSE.txt for details.
In the binary gem for Windows, a compiled TagLib is bundled as a DLL. TagLib is distributed under the GNU Lesser General Public License version 2.1 (LGPL) and Mozilla Public License (MPL).