[vorbis-dev] album cover art in .ogg?

[Ralph Giles]

On Wednesday, January 29, 2003, at 11:01  pm, Peter Harris wrote:

> (and note that MNG is just multiframe PNG)

MNG also supports jpeg encapsulation, which is especially nice for 
cover art sorts of applications (the single-frame version of that is 
called 'JNG') I'd not thought about supporting PNG and JNG data. My 
inclination is not to: it doesn't make a lot of sense to embed a single 
image in a (time serialized) ogg file. Also, wrapping either in MNG 
blocks is trivial for the encoder to do.

Of course, the standard answer for album cover art is that it belongs 
in a separate file anyway. An album is a collection of songs, so the 
natural representation is more a directory of separate ogg files than a 
single, long, all-encompassing ogg file. And if you've got a directory, 
it makes sense to include album-associated art as a separate file that 
can be access along with any of the songs.

MNG-over-ogg makes more since for a per-song splash screen or visuals. 
That's effectively an visual track that plays along with the music, 
even if it's effectively only one frame; that's likely why you didn't 
find anything about single-image encapsulation in ogg.

FWIW,
  -r

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