[Zope] Re: audio order
aamehl at bezeqint.net
Wed May 26 23:37:17 EDT 2004
> I checked out the wiki, and it looks like you have a very ambitious project
And I as I see it I keep getting further and further away from
> > My problem is that the audio is only one aspect of the picture and I
> > need to keep the metadata in sync with, notation and information.
> > I am currently leaning towards keeping the metadata outside the actual
> > ogg files and having it added when the playlists are created.
> Why not keep the metadata in the OGG files themselves. It's in the OGG spec,
> so you might as well take advantage of it!
My ogg files are conversions from casette/reel-to-reel tapes that I or
another collaborator has created.
The metadata for the most part either doesn't exist, or is in print and
must be added later.
I see no problem with storing the metadata in in ogg file and having it
added to fields later, but what about notation files that have metadata
but no recording exists?
> > First people will search the metadata and then reaquest to hear the
> > songs.
> You can store the metadata in the Zope database as well, so that it is
> > I unfortuately got all my reponses off list.
Yes because you answered me off-list. This is a mistake as if these
mails are lost I won't be able to retreive them from the archives and
others won't benefit from them.
We should somehow get this discussion on the list again. I will cc. this
to the list.
> And I can see that this message you sent to me was also sent privately
> instead of to the list. You should really use "Reply to All" in your email
> client, so that BOTH the list and the recipient get a copy of your msg.
> > Some suggested a way to use the Zope db for large files.
> Yes, Sergey Volobuev mentioned that Zope 2.7.1 will have some improvements
> in this area.
> > I am still so new to zope that I am still unsure what will provide me
> > with the best solution.
> You have some pretty special requirements in that you need to keep metadata
> in sync with audio files and notation files. I would strongly recommend that
> you have a look at Archetypes. It gives you a lot of flexibility in this
Truthfully, I see CMF products and Archetype products and can't figure
out what they are/do? I don't see them in the Zope Book....
> You could for example extend the ATAudio product to be referenceable to a
> ATNotation type. In this way, you can upload your Audio files with all
> metadata intact, and then "link" this audio file to a corresponding Notation
> file that you have also uploaded.
> Using WebDAV, you can get these files into your site very quickly by
> drag-n-drop, and you won't have to enter all the metadata into your site
> because it will already be embedded in the OGG files.
Again I have no metadata in the ogg files yet.
> As for the notation, I know that Andrew Kuchling from the docutils project
> wrote a directive for the ABC music language.
> Michael Hauser is working on getting this to work in a Zope/Plone site,
> which means you could upload a notation file, and it would be rendered in
> the site as a PNG image. It looks like the only dependencies besides
> docutils are abcm2ps, Ghostscript and PIL.
hmm this sounds interesting, unfortunetly lilypond relies on Latex
although in version 3. they plan also to output postscript only.
> Now to reply to your comments...
> >>> Have you seen the audio products? In what way will they help me?
> >> CMFAudio, written by Marc Bowery is fine for small MP3 files,
> > I have small ogg files but lots of them
> If they are small and Zope 2.7.1 is able to stream them sufficiently, you
> may not even want to bother with storing them on the file system. There are
> some advantages to having all your data in the ZODB.
> >> want to workflow, edit and
> >> search for them.
> > but not for the general public only a small group of developers
> You can define these permissions however you want.
> >> The cool thing is that we've implemented an ID3Storage layer which acts
> >> as an interface for reading/writing the ID3 tags from/to the MP3 files
> >> This was done using pyid3lib (http://pyid3lib.sourceforge.net).
Yes I has the id3lib but it is only mp3...
> >> This saves you from doing a lot of data-entry, especially if your audio
> >> files already have metadata embedded in them.
> > In either case the metadata is yet to be added. The question is whether
> > it should reside withing the ogg files or the notation or ?.
> Well, that depends on your use cases. You could also make an abstract "Song"
> type which contains ONLY metadata but has references to the actual audio and
> notation files.
Thats what I have so far although I can't figure out how to make it fly.
I have folders nigunim/notation/audio/
my idea was to have the metadata for each nigun(song) reside in the
highest level nigun folder and then have only the ogg specific metadata
reside in the ogg folder, and only the notation specific metadata reside
in the notation folder, a so forth.
My thought was that since no metadata exists at least I should make it
as easy as possible to add the metadata. Once the metadata is added for
the nigun, only the specific metadata for the recording will need to be
added, and in my case there could be many ogg files for each notation
file. (the same song perfomed by different singers)
> Or if you don't want to bother with Archetypes, you could make this "Song"
> type folderish, so it could be a container for the audio and notation files.
> In my opinion, this would be the simplest way to do it.
So it seems.
> > I also have the language issue where I need to serve metadata in
> > multiple languages (hebrew and english)
> Ugh.. Then that complicates things a bit. Currently, the only solution that
> I know of is I18NLayer, but it gets very messy. If you can wait a month,
> there will be a new product called LinguaPlone which makes handling
> multilingual content much easier. However, I think it requires that your
> content types are Archetypes-based since it relies on the new Archetypes
> references engine.
Ok, but for the beginning I will content myself with english.
> >> Unless you don't even use Zope to serve the file, but simply provide a
> >> pointer to the URL where another 3rd party tool (such as Apache,
> >> Icecast, Shoutcast, Edna, etc.) actually serves up the file.
> > sounds interesting
> But again, if your OGG files are small, you may not want to complicate
> matters with 3rd party streaming tools. On the other hand, your solution
> will be more scalable if you store your files outside of the ZODB because
> then you can use any streaming server and easily change to a better one if
> the need arises.
> >>> Well I think the largest ogg file will be 9 megs. Certainly not 30- 50
> >>> meg.
> 9 Meg is not what I would consider "small". If you are going to have many of
> these large files, I would definitely consider storing them on the file
> system instead of the ZODB. Or else you will quickly find yourself with ZODB
> >> This is how we do it with ATAudio. When you click on the 'Play' icon, it
> >> auto-generates an .m3u file which points to the MP3 file being served
> >> from your Apache server.
> > Also ogg?
> I answered this in the last mail. No ogg support yet, but it's coming...
> >> Jens Klein (jensens) is working on providing support for OGG files,
> >> using the pyOGG libraries. http://www.andrewchatham.com/pyogg/
> >>> I am not planning to run apache in addition to zope. I haven't looked
> >>> at ZEO and I will do that soon I guess.
> >> Why aren't you planning to run Apache? It's pretty foolish to run Zope
> >> 'in the wild' without Apache in front of it. Also, Apache (esp. with
> >> mod_mp3 or Apache::MP3) makes an excellent server for serving up those
> >> large MP3/OGG files.
> > Well I have seen those who use it in the wild as you say and just use a
> > lot of cache.
> Well, the Zope caching is not very robust and eats up a lot of RAM. You can
> reduce the hit on your Zope server a lot by using Apache or Squid caching in
> front of Zope. Also, using Apache is not only for performance reasons, but
> also for security reasons.
> > I may use apache etc. but for development I am working locally. I am
> > trying presently to avoid learning another thing, at least until I
> > understand Zope enough to get off the ground.
> It's fine while you're developing the site, but once you launch it, you
> should really use Apache. It's not very difficult to set up. Just a few
> lines in your Apache's httpd.conf file (VirtualHost directive).
> >>> If anyone is willing/interested in giving some feedback about how to
> >>> best use zope for my project, My Wiki explains the project details and
> >>> design issues.
> >> What is the URL to your wiki? Mine is
> >> http://plone4artists.jazkarta.com/development/Audio
> >> The ATAudio product is still a little rough around the edges, but you
> >> are welcome to join in the development efforts.
> > I will take a look thanks.
> >> The bugs/issues collector for ATAudio describes the known issues and
> >> features which are planned. http://tinyurl.com/37u7k
> >> You can also read the TODO.txt if you grab the product from the
> >> collective CVS. http://sf.net/projects/collective
I grabbed the product, and thought to give it a whirl but I got a show
stopping error so I removed it. I will read the TODO.txt though.
> >> I'm looking forward to this talk in a few weeks at the EuroPython
> >> conference: "The Railroad Project: Managing Large files Around Zope"
> >> http://www.europython.org/conferences/epc2004/info/talks/zope/kitblake01
Whew so much to learn and so little time, I was hoping that Zope would
speed up the process, but I am starting to be a bit overwhelmed.
Any additional insights you can offer, would be most appreciated
> >> Nate
> > Thanks
> > Aaron
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