[Icecast] Fallback stream not preventing a disconnect

Maarten Bezemer mcbicecast at robuust.nl
Tue Aug 29 08:36:40 UTC 2017

Hi Erwin,

Not sure if this might be related. Not sure if you are connecting the 
fallback to another stream or to just a file. If it is a file, then you 
can get buffering issues because most clients have buffers they can fill 
with minutes of audio. If you fall back to a file that is pushed towards 
the client at once, it can push a few minutes of audio in just seconds.

If you set up a locally pushed stream that takes into account the bitrate 
of the fallback file, falling back to that file would only give 1 second 
of data per second.

As for the 10-20sec delays: this is normal, because players buffer data 
and usually only start playing if they have at least 10-15 seconds in 
buffer. Streaming audio was never intended to be real-time. If you want 
that, you need to use UDP data transport and fault-tolerant codecs such as 
used in phone systems.


On Tue, 29 Aug 2017, Erwin Pannecoucke wrote:

> Dear Philipp,
> I've compiled it from source on my raspberry pi, and replaced the binary
> from the synaptic package manager with the compiled one. Everyting is
> working fine now, it seems that there is indeed a "faulty" package in the
> repository. I don't know who I should contact to get this fixed?
> Anyway, it works, but while using ogg as output stream from mopidy, I get a
> delay of 4 (!) minutes when changing tracks:, it takes me about 2 minutes
> from the stream to stop (still playing track 1), then another 2 of silence
> (probably buffering), and only than I hear my music again (song 2).
> If I use mp3 as a stream output, the delay is 2x 10 seconds, thus more
> feasable but still a bit long. Anything I can do about that?
> Thanks for putting me in the right direction!
> Kind regards,
> Erwin
> 2017-08-28 10:41 GMT+02:00 Philipp Schafft <lion at lion.leolix.org>:
>> Good morning,
>> On Mon, 2017-08-28 at 10:36 +0200, Erwin Pannecoucke wrote:
>>> Dear Philipp,
>>> Thanks for this fast answer.
>>> I'm using "Icecast 2.3.3-kh7-20130425090916", installed on a Raspberry
>> Pi 3
>>> using the cononical "sudo apt-get install".
>>> The output was copied from the log file in /var/log/icecast2/error.log.
>> Ok. That is a software from a different vendor (a fork).
>> Have you tried with official Icecast2?
>> You can also wait and see if any user of that software is on this ML
>> that can help you.
>> With best regards,
>>> 2017-08-28 10:06 GMT+02:00 Philipp Schafft <lion at lion.leolix.org>:
>>>> On Mon, 2017-08-28 at 09:39 +0200, Erwin Pannecoucke wrote:
>>>>> I"m using a combination of mopidy, icecast2 and Home-Assistant on a
>>>>> raspberry pi to stream Google music to a Chromecast Audio.
>>>> What exact software are you using. Your log file is not generated by
>>>> official Icecast2.
>>>>> [2017-08-16  14:40:20] INFO mpeg/check_for_mp3 MPEG 1 Layer 3
>> detected
>>>>>> (44100, 2) on /mopidy.mp3
>>>> No official version of Icecast2 can generate this message.
>> --
>> Philipp.
>>  (Rah of PH2)
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