[vorbis] Ogg Traffic for April 29, 2003

Tue Apr 29 12:44:40 PDT 2003

Hi everybody:

Here is the latest edition of Ogg Traffic. The HTML version is at
http://www.vorbis.com/ot/20030429.html

Enjoy!

-Carsten

<p>Ogg Traffic for Tuesday, April 29, 2003

[1]Carsten "Purple" Haese

   April 29, 2003
     _________________________________________________________________

   Table of Contents

   1. Status Updates

        1.1. Monty
        1.2. Stan Seibert
        1.3. Michael Smith
        1.4. Karl Heyes
        1.5. Oddsock

   2. Interesting Discussions

        2.1. Appending an Ogg file to another

   3. Recent Developments

        3.1. Emmett Plant leaves Xiph.org
        3.2. Independent Label considers going Vorbis
        3.3. Theora support coming to Xine
        3.4. Xiph.org News Feed

   [2]Previous Issues of Ogg Traffic

1. Status Updates

1.1. Monty

   Monty is continuing his crusade to reduce memory usage in Tremor to
   the bare essentials. Most recently, he tackled the inverse MDCT. It is
   now done fully in-place, without any working memory needed beyond the
   buffer for the current window. He also reduced unnecessary memory
   accesses, and the last stage of the MDCT now renders directly into the
   PCM output buffer.

1.2. Stan Seibert

   Stan is making good progress on Positron and its technical
   documentation. It is not ready for public tinkering yet, but he
   reports that it can successfully upload MP3 files to the Neuros.

1.3. Michael Smith

   Mike committed more icecast bug fixes, added a helpful explanation to
   the example configuration file, and committed a patch to support
   aliasing, contributed by Paul Donohue.

1.4. Karl Heyes

   Karl fixed a nasty off-by-one bug in libshout and continued to inject
   sanity into the icecast autotools setup.

1.5. Oddsock

   Oddsock cleaned up the icecast win32 build, added a console mode to
   the icecast win32 version, and added support for sending "What's
   Playing" information to the yp server.

2. Interesting Discussions

2.1. Appending an Ogg file to another

   This question comes up once in a while, so I guess it's time to
   provide a tiny How-To for appending an Ogg file to another. Dominic
   Mueller [3]surmises in this message that it can't be as easy as
   simply concatenating two Ogg files. Or can it?

   The answer is a resounding, Yes, it is that easy! One key feature of
   the Ogg container format is that you can append one song to another by
   simple file concatenation. The result of such a concatenation is one
   physical bitstream (i.e. one file) that contains two or more logical
   bitstreams. Such constructs are allowed and encouraged by the
   specification, and they are just one more example of why Ogg is really
   cool technology.

   As far as Dominic's worry about multiple Vorbis comments is concerned,
   this is really no problem. Each logical bitstream does retain its
   comments, but this is an asset, not a liability. A Vorbis player
   program should display the comments for the current logical bitstream
   and update its display to reflect the changes in comments from one
   logical bitstream to the next. So if you have larger works that
   consist of separate parts, you can rip and tag each part individually.
   After concatenating the parts, you can listen to the work as a whole,
   and the player will always tell you which part you're listening to!

3. Recent Developments

3.1. Emmett Plant leaves Xiph.org

   The Xiph.org Foundation announced [4]in this press release the
   termination of its contract with Emmett Plant, who acted as CEO of
   Xiph.org since May 2002. Now that Xiph.org is a federal tax-exempt
   non-profit organization under section 501(c)3, it needs to find a
   better balance between private and public funding. Emmett's work was
   very helpful in raising corporate awareness of Vorbis and in making
   portable Vorbis support a reality, but Xiph.org must now refocus on
   public interests.

3.2. Independent Label considers going Vorbis

   [5]This message reports that [6]Fat Chuck's Music, an independent
   music label that gives artists 100% of the profit from the sales of
   their music, is considering moving to Ogg Vorbis as its official
   format for online music distribution. This report is currently
   unconfirmed, but if this is true, this is yet another step towards
   broad public acceptance of Ogg Vorbis.

3.3. Theora support coming to Xine

   [7]Andreas Heinchen informs us that he has begun, and almost
   completed, adding support for [8]Theora to [9]Xine. Player support
   is an important prerequisite for codec adoption, so Andreas' efforts
   to integrate Theora into Xine are certainly appreciated. Good luck,
   Andreas!

3.4. Xiph.org News Feed

   Nathan has set up an RSS feed that will serve up all the latest
   Xiph.org news. This feed can be aggregated into other web pages, or
   you can use an RSS viewer (like e.g. Evolution's summary page) to get
   Xiph.org news without a web browser. The feed is available at
   [10]http://www.xiph.org/feeds/xiph.xml.

References

   1. mailto:carsten at xiph.org
   2. http://www.vorbis.com/ot/
   3. http://www.xiph.org/archives/vorbis/200304/0106.html
   4. http://www.xiph.org/press/2003/ceo/
   5. http://www.xiph.org/archives/vorbis/200304/0117.html
   6. http://www.fatchucks.com/z1.html
   7. http://www.xiph.org/archives/theora/200304/0002.html
   8. http://www.theora.org/
   9. http://xine.sourceforge.net/
  10. http://www.xiph.org/feeds/xiph.xml

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