# Re: Metadata 0.2 **URL:** \ **Category:** Ruby\ **Created:** [September 17, 2007, 1:24pm UTC](https://www.ruby-forum.com/t/re-metadata-0-2/114702 "2007-09-17T13:24:31Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Ilmari\_H](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/a587f6/32.png) [@Ilmari\_H](https://www.ruby-forum.com/u/Ilmari_H)\ **Post date:** [September 17, 2007, 1:24pm UTC](https://www.ruby-forum.com/t/re-metadata-0-2/114702/1 "2007-09-17T13:24:31Z")
On 9/13/07, Konrad M. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Any chance this could be expanded to add FLAC and OGG support? > > ## Thanks! > > Konrad M. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) [http://konrad.sobertillnoon.com/](http://konrad.sobertillnoon.com/) Done! Along with a preliminary list of supported formats and some cleanup. Thanks for the request! tarball: [http://dark.fhtr.org/repos/metadata/metadata-0.2.tar.gz](http://dark.fhtr.org/repos/metadata/metadata-0.2.tar.gz) git: [http://dark.fhtr.org/repos/metadata/](http://dark.fhtr.org/repos/metadata/) Changelog: README: \* added flacinfo, wmainfo, mp4info and ogginfo to the list of dependencies \* prelim list of supported formats lib/metadata/extract.rb: \* .ps.gz support \* list archive contents \* remove null fields from output \* support for flac and ogg \* untested support for wma and m4a \* Audio.Bitrate now in kbps to match shared-filemetadata-spec ## Description This package `Metadata' comes with a library called `metadata’ and a small program called `mdh’. 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. Mdh can print out file metadata as YAML and package the metadata with the file. This package has many dependencies since there is no single universal metadata header format that all files use. Blame resource forks, filename extensions, bags of bytes and mimetypes. ## Usage # print out metadata header mdh -p myfile.jpg # create myfile.jpg.mdh, which consists of metadata header + myfile.jpg mdh myfile.jpg # print out metadata header from mdh file mdh -e -p myfile.jpg.mdh # strip out metadata header from mdh file and save it to myfile.jpg mdh -e myfile.jpg.mdh irb\> Metadata.extract(‘myfile.jpg’) irb\> Metadata.extract\_text(‘myfile.jpg’) irb\> Pathname.new(“myfile.jpg”).metadata ## List of supported formats Audio: Successfully tested with: mp3, flac, ogg, wav Should also work: wma, m4a Video: What you manage to make mplayer play, which can be just about anything. Then again, missing title and author data, etc. (do videos even have those?) Successfully tested with: wmv, mov, divx, xvid, flv, ogm, mpg Images: Should handle pretty much anything (apart from XCF and ORF.) Successfully tested with: jpeg, png, gif, nef, dng, crw, pef, psd Documents: Successfully tested with: pdf, ppt, odp, sxi, ps, ps.gz, html, txt Should work: - OpenOffice docs work to some degree (personally, I’m using unoconv to convert OO docs to temp PDFs for the text & dimensions extraction, so those bits of data are missing.) - MS Office docs to some degree (ppt at least, doc and xls should work too, dimensions missing due to the above temp PDF -thing.) Others: Whatever extract spits out on the five or six bits of metadata I’m using from it. Archive contents at least. ## Requirements - Ruby 1.8 - Tons of metadata extraction programs and libs, list of gems: flacinfo-rb wmainfo-rb MP4info list of debian packages: dcraw libimlib2-ruby extract libimage-exiftool-perl poppler-utils mplayer html2text imagemagick unhtml pstotext antiword catdoc shared-mime-info vorbis-tools - 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://cybercom.net/~dcoffin/dcraw/) [shared-mime-info](http://freedesktop.org/wiki/Software/shared-mime-info) - Python + chardet library [http://chardet.feedparser.org/](http://chardet.feedparser.org/) ## Install De-compress archive and enter its top directory. Then type: ($ su) # ruby setup.rb These simple step installs this program under the default location of Ruby libraries. You can also install files into your favorite directory by supplying setup.rb some options. Try “ruby setup.rb --help”. ## License Ruby’s Ilmari H. \ > **[fhtr](http://fhtr.blogspot.com)** > > art with code ---
**Author:** ![Ilmari\_H](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/a587f6/32.png) [@Ilmari\_H](https://www.ruby-forum.com/u/Ilmari_H)\ **Post date:** [September 17, 2007, 1:25pm UTC](https://www.ruby-forum.com/t/re-metadata-0-2/114702/2 "2007-09-17T13:25:01Z")
Hi Ilmari! quoth the Ilmari H.: > ``` > * added flacinfo, wmainfo, mp4info and ogginfo to the list of > dependencies > > ``` Cool, you were able to use a couple of my libraries (be afraid people…). > Video: > What you manage to make mplayer play, which can be just about anything. > Then again, missing title and author data, etc. (do videos even have > those?) Successfully tested with: > wmv, mov, divx, xvid, flv, ogm, mpg Just wanted to mention that despite the name, wmainfo will parse anything wrapped in an ASF audio/video container format[0], so, you could use it to parse wmv movies as well if your user didn’t have mplayer installed. [0] [Advanced Systems Format - Wikipedia](http://en.wikipedia.org/wiki/Advanced_Systems_Format) > Ilmari H. \ > [http://fhtr.blogspot.com](http://fhtr.blogspot.com) Thanks for the code, and have a good one, -d ---
**Author:** ![Ilmari\_H](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/a587f6/32.png) [@Ilmari\_H](https://www.ruby-forum.com/u/Ilmari_H)\ **Post date:** [October 1, 2010, 1:15am UTC](https://www.ruby-forum.com/t/re-metadata-0-2/114702/3 "2010-10-01T01:15:25Z")
Ilmari H. wrote: > On 9/13/07, Konrad M. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > Any chance this could be expanded to add FLAC and OGG support? > > > > ## Thanks! > > > > Konrad M. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) [http://konrad.sobertillnoon.com/](http://konrad.sobertillnoon.com/) > > Done! Along with a preliminary list of supported formats and some > cleanup. > Thanks for the request! > > tarball: [http://dark.fhtr.org/repos/metadata/metadata-0.2.tar.gz](http://dark.fhtr.org/repos/metadata/metadata-0.2.tar.gz) > git: [http://dark.fhtr.org/repos/metadata/](http://dark.fhtr.org/repos/metadata/) Hi, these links are dead. Does this package still exist anywhere? Is it available as a gem? Thanks, Dan > ## Description > > This package `Metadata' comes with a library called `metadata’ and > a small program called `mdh’. > > 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. > > Mdh can print out file metadata as YAML and package the metadata > with the file. > > This package has many dependencies since there is no single universal > metadata header format that all files use. Blame resource forks, > filename > extensions, bags of bytes and mimetypes. ---
**Author:** ![Ilmari\_H](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/a587f6/32.png) [@Ilmari\_H](https://www.ruby-forum.com/u/Ilmari_H)\ **Post date:** [October 1, 2010, 1:49am UTC](https://www.ruby-forum.com/t/re-metadata-0-2/114702/4 "2010-10-01T01:49:25Z")
John W Higgins wrote: > On Thu, Sep 30, 2010 at 4:15 PM, Dan T. > [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)wrote: > > > Ilmari H. wrote: > > > > > On 9/13/07, Konrad M. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > Hi, these links are dead. Does this package still exist anywhere? Is it > > available as a gem? > > Thanks, > > Dan > > You really are going to take the time to open up a 3+ year old thread on > a > mailing list (for the second time by the way) as opposed to typing “ruby > metadata” into google? > > John My post did not show up (on [ruby-forum.com](http://ruby-forum.com)) the first time. All that google shows are these same dead links. ---
**Author:** ![Ilmari\_H](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/a587f6/32.png) [@Ilmari\_H](https://www.ruby-forum.com/u/Ilmari_H)\ **Post date:** [October 1, 2010, 1:47am UTC](https://www.ruby-forum.com/t/re-metadata-0-2/114702/5 "2010-10-01T01:47:28Z")
On Thu, Sep 30, 2010 at 4:15 PM, Dan T. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)wrote: > Ilmari H. wrote: > > > On 9/13/07, Konrad M. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > Hi, these links are dead. Does this package still exist anywhere? Is it > available as a gem? > Thanks, > Dan You really are going to take the time to open up a 3+ year old thread on a mailing list (for the second time by the way) as opposed to typing “ruby metadata” into google? John