Re: [Linphone-users] VP9 codec

[J G Miller]

At 01:51h, on Wednesday, March 02, 2016,
in message <address@hidden>,
on the subject of "[Linphone-users] VP9 codec",
Nabeel declared -

 > The linphone source has included the code for both VP8 and VP9 codecs.

It does?  Which tar archive contains the VP9 codec?

VP8 and VP9 codecs come from libvpx which is not distributed by linphone
but by the WebM Project.

       <http://www.webmproject.org/>

and in particular

       <http://downloads.webmproject.org/releases/webm/index.html>

The only reference I can find to VP9 in the linphone sources is for building
linphone on MacOSX which requires compiling libvpx WITHOUT VP9 support by using
the command line parameter to configure

               –disable-vp9 
          
Maybe I have not been paying enough attention, but last I read

QUOTE

      Sender: Ghislain MARY<address@hidden>
      Date: Wednesday, Jun 17, 2015 16:54
      Subject: Re: [Linphone-developers] Do you have the plan to integrate the 
VP9support in the near future?

      Hi Jim,

      We have no current plan to support VP9 in the near future.

UNQUOTE

Nabeel asked:

 > know how to modify the source code to enable VP9 codec instead of VP8.

See the discussion (which you could have found with a simple web search with
just the words "linphone" and "vp9") at

   
<https://lists.nongnu.ORG/archive/html/linphone-developers/2015-07/msg00023.html>

taking particular note of

QUOTE

      What you missed is that 

       ===> it will be needed to write a vp9rtpfmt  <===

      to handle the RTP format to transport the VP9 bitstream as it has been
      done in vp8rtpfmt for the VP8 codec

UNQUOTE

My apologies if I am not up to speed on this, and the VP9 codec is now
supported in some newer build than the latest 3.9.1 release.