From: Konrad Meyer <konrad@...>
Date: 2007-09-13T17:15:46+09:00
Subject: Re: [ANN] metadata extractor

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Quoth Ilmari Heikkinen on Monday 10 September 2007 04:18:25 pm:
> url: http://dark.fhtr.org/repos/metadata
> tarball: http://dark.fhtr.org/repos/metadata/metadata-0.1.tar.gz
>=20
> Description
> -----------
>=20
>   This package `Metadata' comes with a library called `metadata' and
>   a small program called `mdh'.
>=20
>   The library probes files for their metadata (e.g. jpeg dimensions
>   and camera make, mp3 artist, pdf word count) and returns the metadata
>   as a Hash.
>=20
>   Mdh can print out file metadata as YAML and package the metadata
>   with the file.
>=20
>   This package has many dependencies since there is no single universal
>   metadata header format that all files use. Blame resource forks, filena=
me
>   extensions, bags of bytes and mimetypes.
>=20
>   The metadata hash mostly follows the shared-metadata-spec naming.
>   http://wiki.freedesktop.org/wiki/Specifications/shared-filemetadata-spec
>=20
> Usage
> -----
>=20
>   # print out metadata header
>   mdh -p myfile.jpg
>=20
>   # create myfile.jpg.mdh, which consists of metadata header + myfile.jpg
>   mdh myfile.jpg
>=20
>   # print out metadata header from mdh file
>   mdh -e -p myfile.jpg.mdh
>=20
>   # strip out metadata header from mdh file and save it to myfile.jpg
>   mdh -e myfile.jpg.mdh
>=20
> irb> Metadata.extract('myfile.jpg')
> irb> Metadata.extract_text('myfile.pdf')
> irb> Pathname.new("myfile.jpg").metadata
>=20
>=20
> Requirements
> ------------
>=20
>   * Ruby 1.8
>=20
>   * Tons of metadata extraction programs,
>     list of debian packages follows:
>       dcraw
>       libimlib2-ruby
>       extract
>       libimage-exiftool-perl
>       poppler-utils
>       mplayer
>       html2text
>       imagemagick
>       unhtml
>       pstotext
>       antiword
>       catdoc
>       shared-mime-info
>=20
>   * You do want to install the latest versions of dcraw and
>     shared-mime-info to be able to handle camera raw images.
>     http://cybercom.net/~dcoffin/dcraw/
>     http://freedesktop.org/wiki/Software/shared-mime-info
>=20
>   * Python + chardet library
>     http://chardet.feedparser.org/
>=20
> License
> -------
>=20
>   Ruby's
>=20
>=20
> Ilmari Heikkinen <ilmari.heikkinen gmail com>

Any chance this could be expanded to add FLAC and OGG support?

Thanks!
=2D-=20
Konrad Meyer <konrad@tylerc.org> http://konrad.sobertillnoon.com/

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