[Icecast] icecast2 mp3 header missing

"Thomas B. Rücker" thomas at ruecker.fi
Sun Oct 19 23:48:24 PDT 2014

On 10/20/2014 04:14 AM, coppla wrote:
> Hi all,
> I’m using icecast2 to serve live streams in mp3. The streams can be played on Chrome or web views on Android, but it is very slow. 

Can you elaborate on "very slow", please?
I fail to imagine what you mean by a stream playing back slowly and
don't want to guess.

> Then i tried ffplay (ffmpeg) to play the streams, it’s much faster but it reports “header missing”. I built ffmpeg with debug-info and i saw that ffmpeg probed the streams several times to get the stream format. First several times the score is low and ffmpeg does not have confidence in the probed format. I guess that’s why the stream is so slow on Android.

It's the first time I hear of such a problem. But then again we give
absolutely minimal treatment to mp3 streams, based on the fact that we
don't want to get anywhere close to infringing on any patents. This
means that we actually don't modify any one bit of the stream and only
pass it on.

> I'm using ffmpeg + mp3fwd as source client. I’ve also tried LadioCast on OSX, and ffmpeg 2.4.2 stand alone without mp3fwd. The problem persists.
> Looking forward to your help! Thanks in advance!

I know of at least one instance where additional mp3 handling was
implemented, due to the patent situation it's not in Icecast. If you
want to explore this commercial option further, contact: Philipp Schafft
<lion at lion.leolix.org>



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