On Sun, 13 Mar 2005 01:22:21 -0800, Phil Karn <[EMAIL PROTECTED]> wrote: > Todd Larason wrote: > > > Can you point me to documentation for the Vorbis metadata? I've scanned > > vorbis.com and xiph.org, and I'm just not finding it. > > Start here: > > http://www.xiph.org/ogg/vorbis/doc/v-comment.html > > I decided on Vorbis for my meta data partly because I have a large > collection of classical CDs, and whoever defined the MP3 ID tags > obviously just wasn't thinking about classical music. The Vorbis comment > conventions aren't complete, but they're a big improvement over MP3 > tags, and more importantly they're free-format and extensible. E.g., > when ripping piano and violin concertos I easily added "SOLOIST" tags > even though no software currently pays attention to them. I figure > they're not that important right now, and support for it can always be > added later. > > The other convention I strongly recommend when tagging classical music > is to make sure each TITLE tag is self contained. If a work spans > several tracks, I'll include the name of the work in each TITLE comment. > For example, if a CD contains Beethoven's 9th symphony in 4 tracks, then > I'll use TITLE tags that look like this: > > TITLE=Symphony 9 - I. Allegro ma non troppo un poco maestoso > TITLE=Symphony 9 - II.Scherzo, Molto vivace > TITLE=Symphony 9 - III. Adagio molto e cantabile > TITLE=Symphony 9 - IV. Presto, Allegro assai > > This is important because many classical CDs contain several unrelated > symphonies or concertos, sometimes by multiple composers. You can't use > the ALBUM comment for this purpose, because it really ought to be the > same for every track on the same CD, even if it contains more than one > work. iTunes has a "GROUP" tag that seems to be designed for this exact > purpose, but it's not in the Vorbis comment conventions, no software > supports it, and it's important enough that I wanted something that > would be displayed by existing software like the Slimserver.
There are issues in other areas - for example, some CD's will have more than one artist - U2 for example, the album Rattle and Hum. It has a song that is both U2 and BB King. If you properly lable the artist as U2 and BB King, then the song does not show up in a listing of just U2 unless you specify "artist includes U2". Then on the same album there is "Freedom for my People" which isn't U2 at all, and then there is Jimi Hendrix "star spangled banner" introducing a song of theirs. And there's "still haven't found what I'm looking for" which is U2 and that gospel choir. That album really messes up ID3 for accurate tagging and proper display of songs when you want to see what you have by "U2" There should be one tag for artist that is the displayed artist, and another tag for artist that is used for the primary artist on the CD - in the above example, U2. I also wish there was a release date in addition to the regular date. The regular date is suppose to be when the song was recorded, but a release date would be really nice to have for songs that have been remastered and then released again - some artists (I believe Rush and Zeppelin, for example) have had their songs remastered multiple times - initial mastering for when the vinyl was released, a digital remastering when they first went to CD, another digital remastering when digital remastering vastly improved, etc. It would be really nice to have those dates available, with the date tag for the song being that of the original recording. That can be done easily enough with vorbis comments like what flac uses, it isn't so easy with ID3 tags. Supposedly (or so I've been told, never tried) mp3 can be put in an ogg container and have vorbis tags used with it - but few players would know what to do with it, so it isn't done. Same thing with mp3 in mpeg4 container (which lame is allegedly considering as an option for the future - or so I've heard, not from lame - but from forums etc.) -- http://mpeters.us/ _______________________________________________ Discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
