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Fwd: shoutcast stream encoding debug
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Fwd: shoutcast stream encoding debug


  • Subject: Fwd: shoutcast stream encoding debug
  • From: Ethan Funk <email@hidden>
  • Date: Sat, 02 Apr 2011 14:13:02 -0700

VLC wont play it either, and iTunes does (as of some recent version) play aac+ streams... works fine when I send the data encoded with the aacplusenc program, it just won't play it when I use the CoreAudio encoder and with my ADTS packet headers.

Unless I am incorrect that what is commonly called "aacplus" is actually AAC-HEv1 and "aacplusv2" is AAC-HEv2.  If I am wrong, then what is aacplusenc actually doing?  Either the CoreAudio AAC-HE coder is doing something different that aacplusenc or my ADTS header is wrong for AAC-HE packets, but correct for AAC-LC. And I'd bet on it being my error someplace.

Ethan...

On Apr 2, 2011, at 1:52 PM, Kyle Sluder wrote:

> On Apr 2, 2011, at 1:29 PM, Ethan Funk <email@hidden> wrote:
>
>> I have aac-lc working... forgot to send packets using ADST headers, as required by shoutcast protocol for aac format.  Now to figure out why aac-he still doesn't play, even with ADTS headers.
>
> IIRC iTunes just doesn't play HE-AAC. We had this problem a few years ago when we wanted to stream our station using Orban's HE-AAC encoder. Not much point in doing so if the most common media player won't decode the stream.
>
> Perhaps a newer version of iTunes has changed that behavior.
>
> --Kyle Sluder


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