[mpg123-devel] [ mpg123-Bugs-3483519 ] Unknown mpeg MIME type audio/aacp

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Bugs item #3483519, was opened at 2012-02-02 21:50
Message generated for change (Comment added) made by sobukus
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Category: mpg123
Group: 1.13.3
Status: Open
Resolution: Invalid
Priority: 5
Private: No
Submitted By: Andrey Tarasov (andreytarasov)
Assigned to: Nobody/Anonymous (nobody)
Summary: Unknown mpeg MIME type audio/aacp

Initial Comment:
version -1.13.4
~# mpg123 http://fantasyradioru.no-ip.biz:8000

[mpg123.c:573] error: Unknown mpeg MIME type audio/aacp - is it perhaps a playlist (use -@)?
[mpg123.c:574] error: If you know the stream is mpeg1/2 audio, then please report this as mpg123 bug

how to fix it ? :)

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Comment By: Thomas Orgis (sobukus)
Date: 2012-02-04 03:00

Message:
Yes, it has been standardized to be used as official replacement of what
was formerly called MPEG 1.0/2.0/2.5 layer I, II and III audio. And, while
based on the old codecs conceptionally, it has its differences and is
(especially with all its options for a heckload of sub-streams) overall a
different beast.

There might be a player derived from mpg123 that uses various decoding libs
(including an aac decoder) in the future, but we won't twist the libmpg123
decoder to work for AAC, too. That would not be very efficient (and also a
lot of work;-). Generally, with a good encoder, MP3 is just fine for web
radio that comes in simple stereo. But of course, I don't do the licensing
rates for the frikkin patents.


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Comment By: Andrey Tarasov (andreytarasov)
Date: 2012-02-03 03:09

Message:
http://en.wikipedia.org/wiki/Advanced_Audio_Coding
...AAC has been standardized by ISO and IEC, as part of the MPEG-2 and
MPEG-4 specifications...

in the future can be realized acc in mpg123? :)

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Comment By: Thomas Orgis (sobukus)
Date: 2012-02-03 01:29

Message:
Well, this is rather simple and also rather fatal: The stream is not MPEG
1/2 audio, it's encoded in AAC. That is a different codec, and mpg123 as
tool to excercise an MPEG 1/2 layer I, II, III decoing engine cannot do
much with that.

If anything, this would be a feature request, but this does not make much
sense for mpg123 itself, but only for a theoretical generic audio decoder
that mimics the mpg123 behaviour using different decoders in the
background. Sorry.

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