[Icecast-dev] Javascript source client

Daniel James daniel.james at sourcefabric.org
Mon Jun 17 02:12:36 PDT 2013

Hi Stephen,
> So we have been advised from this thread 
> https://github.com/muaz-khan/WebRTC-Experiment/issues/28#issuecomment-18385702 
> to not use http put as it is not in real-time, instead they are 
> suggesting the use of SDP, is that something that icecast supports? Or 
> does anyone have other ideas on this?

The imminent Airtime 2.4.0 release has support for Opus, and it already
has user authentication for input streams at specific times, based on a
shared calendar. Plus it supports output to Icecast. So if you want an
experience somewhere between Google Hangout and talk radio, that might
be a good platform to build on:


If that sounds promising, please mail me offlist and I can put you in
touch with the dev team. The code is on GitHub (GNU GPLv3).



> On Sun 12 May 2013 01:51:31 AM CDT, Thomas Ruecker wrote:
>> Hi,
>> On 11 May 2013 15:32, Stephen Mahood <mv at cyberunions.org> wrote:
>>> Thank you for your interest in this, you description is as accurate as I
>>> can see.
>>>> From my perspective your challenges will be to get the containers right.
>>>> WebM for audio+video
>>>> Ogg for audio
>>>> Also (I'm not that familiar with webRTC) you might need to reencode
>>>> to Opus and VP8 in some cases?
>>> here is the great news [...]
>>> both Opus and VP8 are codecs are already supported in webrtc :)
>> Yes, I'm aware of that, but I don't understand webRTC well enough to
>> know if you can get away with a participant that only advertizes
>> support for the above and doesn't support:
>> http://www.webrtc.org/faq#TOC-What-is-the-iSAC-audio-codec-
>> http://www.webrtc.org/faq#TOC-What-is-the-iLBC-audio-codec-
>> and whatever else might still appear.
>> That is nothing to worry about for a first proof of concept though.
>> Start out with VP8 and Opus, worry about the rest later.
>>> It seems to me the bigger challenge is getting a javascript source
>>> client, the reason being is webrtc is written in javascript.
>> Yes, as I said, I'd concentrate on getting an ogg and webm muxer
>> working in Javascript. You might get away with something like
>> emscripten and libogg for the start? Something proper would be
>> preferred though.
>> Sending the stream to icecast is just HTTP-PUT, so should be easy in Javascript.
>>> I think there are amazing things that can be achieved with the webrtc
>>> connection to icecast. It seems could be similar to google hangout
>>> without the google dependency
>> Yes, the possibilities are vast. Now go and make it something awesome!
>> Cheers
>> Thomas
> _______________________________________________
> Icecast-dev mailing list
> Icecast-dev at xiph.org
> http://lists.xiph.org/mailman/listinfo/icecast-dev



More information about the Icecast-dev mailing list