CD ripper preferring accuracy over speed (FORKED from morituri)
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Pull request Compare This branch is 129 commits ahead of thomasvs:master.
Latest commit 4dc7a3c Jan 16, 2017 @JoeLametta committed on GitHub Merge pull request #114 from JoeLametta/fix-old-rip-references
Replace rip command suggestions with 'whipper'


License: GPLv3 Build Status Current version number IRC GitHub Stars GitHub Issues

Whipper is a Python 2 CD-DA ripper, fork of the morituri project (CDDA ripper for *nix systems aiming for accuracy over speed). It improves morituri which development seems to have halted merging old ignored pull requests, improving it with bugfixes and new features.

Whipper is developed and tested only on Linux distributions but may work fine on other *nix OSes too.

In order to track whipper's current development it's advised to check its commit history (README isn't still complete).

Table of content


For a detailed description, see morituri's wiki page: The Art of the Rip.


  • Detects correct read offset (in samples)
  • Has ability to defeat cache of drives
  • Performs Test & Copy rips
  • Verifies rip accuracy using the AccurateRip database
  • Uses MusicBrainz for metadata lookup
  • Supports reading the pre-emphasis flag embedded into some CDs (and correctly tags the resulting rip)
  • Detects and rips non digitally silent Hidden Track One Audio (HTOA)
  • Provides batch ripping capabilities
  • Provides templates for file and directory naming
  • Supports lossless encoding of ripped audio tracks
  • Allows re-tagging of already completed rips
  • Allows extensibility through external logger plugins



For detailed information, please check the commit history.


With the exception of an AUR package for Arch Linux and a Copr repository for Fedora, whipper isn't currently available in a prepackaged form so, in order to use it, it must be built from its source code.

If you are building from a source tarball or checkout, you can choose to use whipper installed or uninstalled but first install all the required dependencies.

Required dependencies

Whipper relies on the following packages in order to run correctly and provide all the supported features:

  • cdparanoia, for the actual ripping
  • cdrdao, for session, TOC, pre-gap, and ISRC extraction
  • GStreamer and its python bindings, for encoding (it's going to be removed soon™)
    • gstreamer0.10-base-plugins (or gstreamer0.10-plugins-base depending on Linux distro) >= 0.10.22 for appsink
    • gstreamer0.10-good-plugins (or gstreamer0.10-plugins-good) for wav encoding (it depends on the Linux distro used)
    • python-gst0.10 (GStreamer Python bindings)
  • python-musicbrainzngs, for metadata lookup
  • python-setuptools, for installation, plugins support
  • python-cddb, for showing but not using metadata if disc not available in the MusicBrainz DB
  • pycdio (to avoid bugs please use pycdio 0.20 & libcdio >= 0.90 or, with previous libcdio versions, pycdio 0.17), for drive identification
    • Required for drive offset and caching behavior to be stored in the configuration file
  • libsndfile, for reading wav files
  • flac, for reading flac files
  • sox, for track peak detection

Fetching the source code

Change to a directory where you want to put whipper source code (for example, $HOME/dev/ext or $HOME/prefix/src)

git clone -b master --single-branch
cd whipper

Building the bundled dependencies

Whipper uses and packages a slightly different version of the accuraterip-checksum tool:

You can edit the install path in

cd src
sudo make install
cd ..

Finalizing the installation

Install whipper: python2 install


Whipper currently only has a command-line interface called whipper which is self-documenting: whipper -h gives you the basic instructions.

Whipper implements a tree of commands: for example, the top-level whipper command has a number of sub-commands.

Positioning of arguments is important:

whipper cd -d (device) rip

is correct, while

whipper cd rip -d (device)

is not, because the -d argument applies to the cd command.

Check the man page (whipper(1)) for more information. (currently not available as whipper's documentation is planned to be reworked (Issue #73).

Getting started

The simplest way to get started making accurate rips is:

  1. Pick a relatively popular CD that has a good chance of being in the AccurateRip database
  2. Analyze the drive's caching behavior

    whipper drive analyze

  3. Find the drive's offset.

    Consult the AccurateRip's CD Drive Offset database for your drive. Drive information can be retrieved with whipper drive list.

    whipper offset find -o OFFSET

    If you omit the -o argument, whipper will try a long, popularity-sorted list of drive offsets.

    If you can not confirm your drive offset value but wish to set a default regardless, set read_offset = insert-numeric-value-here in whipper.conf.

    Offsets confirmed with whipper offset find are automatically written to the configuration file.

  4. Rip the disc by running

    whipper cd rip

Configuration file documentation

The configuration file is stored according to the XDG Base Directory Specification when possible.

It lives in $XDG_CONFIG_HOME/whipper/whipper.conf (or $HOME/.config/whipper/whipper.conf).

The configuration file follows python's ConfigParser syntax.

The possible sections are:

  • Main section: [main]

    • path_filter_fat: whether to filter path components for FAT file systems
    • path_filter_special: whether to filter path components for special characters
  • Drive section: [drive:IDENTIFIER], one for each configured drive. All these values are probed by whipper and should not be edited by hand.

    • defeats_cache: whether this drive can defeat the audio cache
    • read_offset: the read offset of the drive
  • Rip command section: [rip.COMMAND.SUBCOMMAND]. Can be used to change the command options default values.

Example section to configure whipper cd rip defaults:

unknown = True
output_directory = ~/My Music
track_template = new/%%A/%%y - %%d/%%t - %%n
disc_template = %(track_template)s
profile = flac

Note: to get a literal % character it must be doubled.

Backward incompatible changes

  • Dropped external git submodules (PR #31, PR #92)
  • Whipper executable name changed: from rip to whipper (PR #70)
  • Whipper has adopted new config/cache/state file paths (PR #42)

    • Now always follows XDG specifications

      • Paths used when XDG environment variables are available:

        • $XDG_CONFIG_HOME/whipper
        • $XDG_CACHE_HOME/whipper
        • $XDG_DATA_HOME/whipper
      • Paths used when XDG environment variables are NOT available:

        • $HOME/.config/whipper
        • $HOME/.cache/whipper
        • $HOME/.local/share/whipper
    • Configuration file information:

      • .moriturirc, morituri.conf aren't used anymore

      • When XDG environment variables are available it's located in:

        • $XDG_CONFIG_HOME/whipper/whipper.conf
      • When XDG environment variables are NOT available it's located in:

        • $HOME/.config/whipper/whipper.conf
    • Plugins folder path:

      • When XDG environment variables are available it's located in:

        • $XDG_DATA_HOME/whipper/plugins
      • When XDG environment variables are NOT available it's located in:

        • $HOME/.local/share/whipper/plugins

Running uninstalled

To make it easier for developers, you can run whipper straight from the source checkout:

python2 develop
whipper -h

Logger plugins

Whipper supports using external logger plugins to write rip .log files.

List available plugins with whipper cd rip -h. Specify a logger to rip with by passing -L loggername:

whipper cd rip -L what

Official loggers

  • morituri-yamlloger - default whipper logger (provided as external logger for compatibility with morituri), yaml format
  • morituri-eaclogger - eac-like logger attempting to maintain strict compatiility with EAC
  • morituri-whatlogger - eac-like logger containing the informational enhancements of the yamllogger, originally designed for use on What.CD


Licensed under the GNU GPLv3 license.

Copyright (C) 2009 Thomas Vander Stichele
Copyright (C) 2016 JoeLametta

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA


Bug reports & feature requests

Please use the issue tracker to report any bugs or to file feature requests.

When filing bug reports, please run the failing command with the environment variable WHIPPER_DEBUG set. For example:

WHIPPER_DEBUG=DEBUG WHIPPER_LOGFILE=whipper.log whipper offset find
gzip whipper.log

And attach the gzipped log file to your bug report.

Without WHIPPER_LOGFILE set, logging messages will go to stderr. WHIPPER_DEBUG accepts a string of the default python logging levels.


Pull requests are welcome.

WARNING: As whipper is still under heavy development sometimes I will force push (--force-with-lease) to the non master branches.


Thanks to:


You can find us and talk about the project on IRC: freenode, #whipper channel.