Audiobook Metadata Program Free
Audiobook Metadata Editor
Audiobook Metadata Program Online

ACCESSORS
METHODS

This guide will show you how to add album artwork (the album covers) to your digital music files such as MP3 or FLAC files using a program called Mp3tag. It is completely free and offers many features to edit the metadata of different audio files. Download Mp3tag from HERE and then install it. Usage: the interface is divided into 3 tabs; “Input files”, “Chapters”, and “Metadata”; load up your audio file(s) in the first tab. In the “Chapters” tab you can designate the chapters and any chapter specific cover art or images to associate with each, while the “Metadata” tab allows you to edit your audiobook’s metadata and add cover art (it does not auto-fetch metadata off the internet though).

As usual audio books consist of several parts/files. Alfa allows to automatically link multiple audio files to single audio-book record in the database. Moreover when importing files to ebook catalog Alfa automatically retrieves metadata and cover from MP3, M4B, AAX books. If metadata is absent - you can easily update it from the web sources like Amazon, Audible.com etc. Here is a list of Best Free Open Source MP3 Tag Editor Software for Windows. These free software let you add, edit, or remove metadata tags of MP3 audio files. All these are open source software which come handy for programmers who want to contribute to the development of these tag editors, or want to create their own audio tag editing software.

Audio::Ofa::Util - Retrieve audio fingerprints and metadata for unknown audio files

This module tries to make retrieving audio fingerprints and metadata for unknown audio files as easy as possible. It interfaces with the modules Audio::Ofa and WebService::MusicBrainz, provides a simple LWP based interface to the MusicDNS library, and can make use of Audio::Extract::PCM to read some popular music formats.

The most comprehensive way to use this is to start with a (possibly untagged) file name and get full metadata:

To create an audio fingerprint:

To create a fingerprint and look it up at MusicDNS:

To look up a known fingerprint at MusicDNS (you need the length of the song, too):

The overall process goes like this:

We create an audio fingerprint, which stores some characteristics of a recording in a rather small amount of data. This is what libofa (and the Perl binding in Audio::Ofa) does. This module (Audio::Ofa::Util) faciliates this with 'analyze_file' by allowing to fingerprint some widely used music formats and storing the results so they can be used for the next steps:
The audio fingerprint is submitted to the MusicDNS web service. Using a proprietary fuzzy algorithm and their database, they determine which song we have at hand. MusicDNS returns some metadeta: The artist, the song title, and a PUID. This 'portable unique identifier' is an arbitrary index into their database and is unique for every recording of a given song.
Note that while libofa's audio fingerprints may change after transformations of a recording (such as lossy audio compression or radio transmission), the fuzzy algorithm will (ideally) still find the same PUID.
Because we usually want to know more than the artist and title, we look up the PUID in a second Web Database called MusicBrainz. It provides us with all desired metadata such as all the albums the song has appeared on in this particular version, and the respective track numbers.
This module provides a basic MusicBrainz PUID lookup through 'musicbrainz_lookup'. If you want to know even more (such as members of the band and the previous bands of those members), you can use WebService::MusicBrainz, to which this module provides an easy frontend.

filename

See 'analyze_file'.

fingerprint, duration

See 'analyze_file' and 'musicdns_lookup'.

client_id, client_version, metadata, bitrate, extension, artist, title, album, track, genre, year, puids

See 'musicdns_lookup'.

Note that puids accesses an array reference. If it is not defined or not set, it means that no PUID has been looked up yet. If it is an empty array, it means that no PUIDs were found.

error

Description of the last error that happened.

new

Constructor. Accepts key-value pairs as initializers for all of the fields, c.f. 'ACCESSORS', but currently only the following calls make sense:

analyze_file

This creates an Audio Fingerprint of a sound file. The audio file is read using Audio::Extract::PCM, which currently uses the extarnal 'sox' program and supports encodings such as MP3, Ogg/Vorbis and many others.

You must set filename before calling this method.

The fingerprint is calculated by ' ofa_create_print' in Audio::Ofa , and the fingerprint field of the object will be set. Additionally, the duration (in milliseconds) and the extension will be set to the values provided by the file name.

In case of an error, an empty list is returned and the error message can be retrieved via 'error'. Otherwise, a true value will be returned.

musicdns_lookup

This looks up a track at the MusicDNS web service.

To do a fingerprint lookup, the keys fingerprint and duration must be present, where duration is the length of the song in milli seconds. Additionally, the following fields (defaults in parentheses) will be sent to the MusicDNS service:

client_id (hardcoded client id), client_version (module name and version), fingerprint, metadata (1), bitrate (0), extension ('unknown'), duration, artist ('unknown'), title ('unknown'), album ('unknown'), track (0), genre ('unknown'), year (0).

To do a fingerprint lookup, fingerprint and duration must have been set (can be given to 'new'), where duration is the song length in milli seconds.

If fingerprint hasn't been set, 'analyze_file' is called implicitly.

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client_id defaults to a hard-coded Client ID. You can get your own from http://www.musicip.com.

You should set as much of the above-mentioned metadata (like artist, etc.) as you have available, because the MusicDNS terms of service require this in order to help clean errors in their database.

In the case of an error, musicdns_lookup returns an empty list and the error message can be retrieved with the 'error' method.

In the case of success, musicdns_lookup sets the fields puids to the found PUIDs, and sets the fields artist and title to the first of the found values, and returns a true value. In list context, it returns a list of objects which have artist, title and puid methods.

musicbrainz_lookup

This looks up a PUID at MusicBrainz. The PUID can come from a call to 'musicdns_lookup'. In fact this is implicitly done if there is no PUID stored in the object (cf. 'SYNOPSIS').

This returns a list of WebService::MusicBrainz::Response::Track objects on success, or the first of them in scalar context. Otherwise it returns an empty list and the error message can be retrieved via the 'error' method.

This method returns a list of tracks or the first track in scalar context. The tracks are represen

Audiobook Metadata Program