[Icecast] Winamp v5.22 / oddcast / aac+

Greg J. Ogonowski greg at orban.com
Wed May 31 05:39:42 UTC 2006

I believe that Oddsock is using a Content Type of aacp.
Using a .aac extension with this Content Type may present a conflict.
This might actually be by design.
I will do some further testing with Winamp and report here tomorrow.
I will also double-check with the developer of Winamp for complete 

FYI, Orban Opticodec-PC allows the use of either Content Type of aac 
or aacp. aac is technically all that is necessary. The history of the 
aacp Content Type was to allow the stream to show in the SHOUTcast 
Directory, but since Icecast streams cannot show in the SHOUTcast 
Directory anyway, this doesn't matter, and  a content type of aac 
should be used. This way there is one Content Type for either AAC or 
aacPlus streams, and the decoder takes it from there.


At 20:12 2006-05-30, Ross Levis wrote:
>Ok, it's not as bad as I thought.  With some investigation and
>discussion with a "Major Dude" in the Winamp forums, it appears to be a
>bug in Winamp v5.22 with streams that end with the mountpoint extension
>.aac.  I changed the mountpoint to end with .aacp and now it works fine.
>----- Original Message -----
>From: "Ross Levis" <ross at stationplaylist.com>
>To: <icecast at xiph.org>
>Sent: Wednesday, May 31, 2006 2:25 PM
>Subject: [Icecast] Winamp v5.22 / oddcast / aac+
>I'm not sure if this is an icecast issue or oddcast issue or both, but
>the latest Winamp (v5.22) is not now playing AAC+ streams encoded with
>Oddcast.  Winamp v5.21 and earlier versions work fine.  This may be some
>attempt by Winamp developers to force people to use Shoutcast, or to
>prevent oddcast from using their enc_aacplus.dll.
>Right, just took some time to set up the Shoutcast DSP to encode AAC+
>and send it to an Icecast server.  This is working and playing in Winamp
>v5.22.  So it appears to be an Oddcast encoding issue.
>You may need to do some analysis Oddsock to see if you can duplicate the
>Shoutcast DSP output byte for byte to get around this blocking they seem
>to be doing.
>Nullsoft must think they are big enough now to enforce their ideals on
>their customers.  In the meantime, I'm considering removing Winamp from
>my list of compatible players on my website.  They can use Windows Media
>Player, XMPlay, Foobar2000, etc.
>Icecast mailing list
>Icecast at xiph.org
>Icecast mailing list
>Icecast at xiph.org

Greg J. Ogonowski
VP Product Development
1525 Alvarado St.
San Leandro, CA  94577  USA
TEL +1 510 351-3500
FAX +1 510 351-0500
greg at orban.com

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