[vorbis] An Analysis of the c't Codec Test

[Greg Wooledge]

James Snook (james.snook at gmx.net) wrote:

> here) and used ogg Vorbis 1.0, I had to email the author to confirm
> that, but it was 1.0,

If you examine the raw .ogg file with a text editor, or hex editor, or
any other sufficiently low-level tool, you will find a version string
put there by the encoder libraries.  Vorbis 1.0 files have a string like
this:

  Xiph.Org libVorbis I 20020717

Vorbis RC3 looks like this:

  Xiphophorus libVorbis I 20011231

And all earlier versions have the same format as RC3, but with an
older timestamp in the last 8 bytes.  (Some CVS snapshots of pre-1.0
Vorbis will have the older "Xiphphorus" format, and some have the
newer "Xiph.Org" one.  The actual switchover occurred a week or two
before 1.0 was released.)


-- 
Greg Wooledge                  |   "Truth belongs to everybody."
greg at wooledge.org              |    - The Red Hot Chili Peppers
http://wooledge.org/~greg/     |


-------------- next part --------------
A non-text attachment was scrubbed...
Name: part
Type: application/pgp-signature
Size: 188 bytes
Desc: not available
Url : http://lists.xiph.org/pipermail/vorbis/attachments/20021001/079c1abd/part.pgp