[vlc] AAC / HE AAC / aacPlus Audio Streams

[Greg J. Ogonowski]

Hello-

We currently have an AAC / HE AAC / aacPlus Streaming Encoder that works 
with SHOUTcast, Icecast2, and QuickTime/Darwin servers. Since the audio 
quality and performance is better than MP3 or Windows Media, allowing lower 
bitrates, this will be the codec of the future, as it is already the MPEG-4 
standard.

http://www.orban.com/orban/products/stream/1010_overview.html

Winamp 5.05 and above supports AAC / HE AAC / aacPlus using HTTP/ICY.
RealPlayer 10 supports AAC / HE AAC / aacPlus using RTSP/RTP.

There is a small stream directory started here:

http://www.opticodec.net


I have tested VLC with our SHOUTcast test stream at:

http://stream.orban.com:8006

It does not work.
We are using a content type of audio/aac.  This can be used to authenticate 
connection and determine the filename extension of .aac.  MP3 uses 
audio/mpeg and AAC / HE AAC / aacPlus uses audio/aac for SHOUTcast streams.

soma fm is streaming at:

http://war.str3am.com:7800

That stream is using an earlier beta encoder from us.  It is using a 
content type of audio/aacp, which might be supported as well, but it will 
more than likely go away.  They will be changing encoders within the next 
few days, at which point VLC will no longer play this stream.

I have also tested VLC with our Icecast2 test stream at:

http://stream.orban.com:80/test.aac

This also does not work.
Here is a bit of information on the AAC Icecast2 streams. In order to work 
with Icecast2 servers, we are currently using a content type of audio/mpeg 
with a mountpoint that always ends with .aac. Looking at this, you can 
determine which extension to apply to the StreamDown resultant file. We are 
in the process of applying for a mime type of audio/aac. When this happens 
the Icecast developers will be adding this to the server, and we will 
support this content type for Icecast2 as well.  At that time, you will be 
able to use .mp3 for audio/mpeg and .aac for audio/aac.

I have tested VLC with our Darwin test stream at:

rtsp://66.220.31.130:554/test.sdp

This works fine, but will not play across certain firewalls that have 
difficulty with UDP.  RealPlayer is somehow able to able to play across 
firewalls with UDP issues and still use UDP if desired.  I have not 
investigated how.  It would be beneficial to support TCP interleaved 
RTSP/RTP streams as well.  QuickTime supports this as their way around 
firewalls with UDP difficulty.

Please let me know if there is anything else I can help with.
Please also let me know when a new version is ready to test.
I would like to list your software as being compatible with these streams.

Thanks.
-greg.


________________________________________
Greg J. Ogonowski
VP Product Development
ORBAN/CRL, Inc.
1525 Alvarado St.
San Leandro, CA  94577  USA
TEL  +1 510 351-3500
FAX  +1 510 351-0500
Web:  http://www.orban.com
E-Mail:  greg at orban.com 

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