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<div class="moz-cite-prefix">See inline responses.<br>
<br>
On 05/16/2013 02:40 AM, Fernando Hernandez wrote:<br>
</div>
<blockquote
cite="mid:CAGSuzy6depgC__+ZoZ7Crnc5Re6fMmmx0W+pN-Thp4g-Wxo+Xg@mail.gmail.com"
type="cite">Hello everyone,
<div><br>
</div>
<div>we are working on a videoconferece platform with freeSWITCH
integrated. Now we have a the possibility to try a new codec,
proprietary, and we have never gone too deep with freeSWITCH. I
have tried to take a look at the wiki but I didn´t find the
answer to the next question,</div>
<div><br>
</div>
<div>Is it possible to integrate that new codec into freeSWITCH?
according to the codec provider it is a G.279 implementation,
with several improvements. Any licence issue? difficulty to
achieve the integration? </div>
<div><br>
</div>
</blockquote>
<br>
Yes, it is possible. You have to look at the code for another
codec's module for basic reference. Yes, there *can* be licensing
issues, especially if you wish to distribute the code in any
fashion. You need to read both the MPL 1.1 as well as the license
terms for whatever libraries you are linking your new module with.
But before I go any further, the issue with g729 isn't that the
source code is necessarily restrictively licensed - it's that the
codec itself is protected under patents and thus subject to
per-channel licensing. I do find myself curious to know what this
implementation of g729 that you are planning to work with is, and
what are the improvements that it offers over the licensed g729 in
the FreeSWITCH tree. I am curious in part because I know the guys
put in a lot of effort to be able to provide legal licensing for
g729 in FreeSWITCH, and if there's a viable way to improve on the
code, there might be the option to provide a bounty for it or make
the contribution yourself back to the FreeSWITCH code (without the
use of the proprietary code, of course).<br>
<br>
<blockquote
cite="mid:CAGSuzy6depgC__+ZoZ7Crnc5Re6fMmmx0W+pN-Thp4g-Wxo+Xg@mail.gmail.com"
type="cite">
<div>On the other hand, we also have another issue. I have checked
freeSWITCH wiki trying to find any possible limit for concurrent
calls, and according to it,<font face="arial, helvetica,
sans-serif"> it <span
style="font-size:13px;line-height:19.046875px;background-color:rgb(255,255,255)">doesn't
seem to be a limit of SIP but purely the RTP</span></font>.
But with the open source video conference platform we are
working now this is limited to 25, and according to the
developers it is due to the audio. Do you have any idea about
this issue? We have run some test and we go over 25 people in
the meeting freeSWITCH uses 125% of CPU (ref. 8 cores machine
and each core represent 100% capacity => 800%), is this a
normal behavior?</div>
</blockquote>
<br>
Are you transcoding audio on these calls? That's where most of the
CPU power would go to if the audio is indeed the issue.<br>
<br>
<blockquote
cite="mid:CAGSuzy6depgC__+ZoZ7Crnc5Re6fMmmx0W+pN-Thp4g-Wxo+Xg@mail.gmail.com"
type="cite">
<div><br>
</div>
<div>Thank you very much,</div>
<div><br>
</div>
<div>Fernando Hernandez</div>
<br>
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