[asterisk-dev] Opus and VP8

[Hans Witvliet]

-----Original Message-----
From: Olle E. Johansson <oej at edvina.net>
Reply-to: Asterisk Developers Mailing List
<asterisk-dev at lists.digium.com>
To: Asterisk Developers Mailing List <asterisk-dev at lists.digium.com>
Cc: Olle E. Johansson <oej at edvina.net>
Subject: Re: [asterisk-dev] Opus and VP8
Date: Fri, 24 May 2013 13:26:29 +0200


24 maj 2013 kl. 12:51 skrev Lorenzo Miniero <lminiero at gmail.com>:

> PS: a few months ago I also talked, on the #asterisk-dev IRC, about
> the support I added for both Opus (transcoding) and VP8 (passthrough)
> in Asterisk, codecs that are currently the default ones used in
> WebRTC. I checked whether there was an interest in a patch for them,
> but at the time there were some concerns about the copyright status of
> Opus that prevented it to be considered for integration in Asterisk.
> Has this situation changed in the meanwhile? I can open a separate
> thread for this if needed.
> 
Lorenzo,


Good seeing you here!


Due to legal issues I don't think Digium can accept a contribution of
Opus and VP8 in the svn repositories today.


I would encourage you, if you have these patches, to publish them on a
web site like github or sourceforge so w all can help you test it. I
really would like for these to be available for the community in an easy
form.


Some things can be done in Asterisk though and that's the code points
for pass through media. I don't think that would cause any legal
issues. 


Hi Olle,

I understand that companies like Digium are very carefully with regards
to legal aspects, but how come that another USA-based company can
use/ship vp8 freely (linphone). The European based company that
builds/distribute Jitsi also ships it in their latest version:

Linphone:
Audio with the following codecs: speex (narrow band and wideband), G711
(ulaw,alaw), GSM, G722. Through additionals plugins, it also supports
AMR-NB, SILK, G729 and iLBC.
Video with codecs: VP8 (WebM), H263, H263-1998, MPEG4, theora and H264
(thanks to a plugin based on x264), with resolutions from QCIF(176x144)
to SVGA(800x600) provided that network 

Jitsi:
"Among the most prominent new features you will find quality multi-party
video conferences for XMPP, audio device hot-plugging, support for
Outlook presence and calls, an overhauled user interface and support for
the Opus and VP8 audio/video codec. You can download the new version at
the following location: https://download.jitsi.org/"