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    <div class="moz-cite-prefix">To elaborate on what Brian means by a
      stateful codec, it means that the codec can always be changing the
      parameters it uses to perform the compression with at any point in
      time even on a single call.&nbsp; You cannot just inject an opus
      bitstream into an existing call as it may have been compressed
      with totally different parameters, and all you would hear is
      garbled static.&nbsp; This is also why there is no way to record sound
      files in the opus codec for use within FS IVR's, as the files
      would need to first be converted back to slin, then from slin back
      to opus for that given call.<br>
      <br>
      <pre class="moz-signature" cols="72">-- 
Yossi Neiman


On 10/23/2014 09:11 AM, Brian West wrote:
</pre>
    </div>
    <blockquote
cite="mid:CAEJMVkAHXY99Ji8sXuJYNmFVAMSRhyO5Y8Np0oJF0TsexggHow@mail.gmail.com"
      type="cite">
      <div dir="ltr">Not with a stateful codec like OPUS</div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Thu, Oct 23, 2014 at 9:25 AM, <span
            dir="ltr">&lt;<a moz-do-not-send="true"
              href="mailto:martin.hoole@emailn.de" target="_blank">martin.hoole@emailn.de</a>&gt;</span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex"><span
              class=""><span style="font-family:arial;font-size:small">|
                "the stream can't easily be shared"</span>
              <div><font face="arial"><br>
                </font></div>
            </span>
            <div><font face="arial">Why not? Once the stream in encoded
                we can reattach it to the 95 muted participants?</font></div>
            <div><font face="arial">So currently mod_conderence encodes
                every muted participant seperate?<br>
                <blockquote style="border-left:2px solid
rgb(0,0,0);padding-right:0px;padding-left:5px;margin-left:5px;margin-right:0px"
                  dir="ltr">--- Urspr&uuml;ngliche Nachricht ---<br>
                  <b>Von:</b> Brian West &lt;<a moz-do-not-send="true"
                    href="mailto:brian@freeswitch.org" target="_blank">brian@freeswitch.org</a>&gt;<br>
                  <b>Datum:</b> 23.10.2014 14:55:45<br>
                  <b>An:</b> FreeSWITCH Users Help &lt;<a
                    moz-do-not-send="true"
                    href="mailto:freeswitch-users@lists.freeswitch.org"
                    target="_blank">freeswitch-users@lists.freeswitch.org</a>&gt;<br>
                  <b>Betreff:</b> Re: [Freeswitch-users] mod_conference
                  / OPUS / 100 participants -&gt; Bad Quality
                  <div>
                    <div class="h5"><br>
                      <br>
                      <div dir="ltr">You're out of resources.&nbsp; You'll
                        hit
                        the same thing trying to encode to 95
                        participants as the stream can't easily be
                        shared.</div>
                      <div class="gmail_extra"><br>
                        <div class="gmail_quote">On Thu, Oct 23, 2014 at
                          8:45 AM, <span dir="ltr">&lt;<a
                              moz-do-not-send="true"
                              href="mailto:martin.hoole@emailn.de"
                              target="_blank">martin.hoole@emailn.de</a>&gt;</span>
                          wrote:<br>
                          <blockquote class="gmail_quote"
                            style="margin:0 0 0 .8ex;border-left:1px
                            #ccc solid;padding-left:1ex">
                            <div><font face="Arial">I was testing
                                mod_conference + mod_verto and Opus
                                enabled.</font></div>
                            <div><font face="Arial"><br>
                              </font></div>
                            <div><font face="Arial">With 100
                                participants the audio quality decreases
                                significantly. CPU is almost 100%.</font></div>
                            <div><span
                                style="font-family:Arial;font-size:small">95
                                participants are muted but I think their
                                audio stream also gets encoded and
                                mixed.</span></div>
                            <div><span
                                style="font-family:Arial;font-size:small">We
                                could serve those 95 participants
                                the same mixed stream? That would save
                                lots of cpu? &nbsp;</span></div>
                            <div><br>
                            </div>
                            <font face="Arial">Intel(R) Core(TM) i7-3770
                              CPU @ 3.40GHz</font><br>
                            <br>
                            <hr><br>
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                          </blockquote>
                        </div>
                        <br>
                        <br clear="all">
                        <div><br>
                        </div>
                        -- <br>
                        <div dir="ltr">
                          <p><font face="courier new, monospace"><b><i><font
                                    size="4">Brian West</font></i></b><br>
                              <span style="font-size:x-small"><a
                                  moz-do-not-send="true"
                                  href="mailto:brian@freeswitch.org"
                                  target="_blank">brian@freeswitch.org</a></span></font></p>
                          <p><font size="1" face="courier new,
                              monospace"><img moz-do-not-send="true"
                                src="http://billing.freeswitch.org/templates/default/img/whmcslogo.png"><br>
                            </font></p>
                          <p><font face="courier new, monospace"><b><i>Twitter:
                                  @FreeSWITCH , @briankwest</i></b><br>
                              <a moz-do-not-send="true"
                                href="http://www.freeswitchbook.com"
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                                href="http://www.freeswitchcookbook.com"
                                target="_blank">http://www.freeswitchcookbook.com</a></font></p>
                          <p><font face="courier new, monospace"><b>T:</b><a
                                moz-do-not-send="true"
                                href="tel:%2B19184209001"
                                value="+19184209001" target="_blank">+19184209001</a>
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                              |&nbsp;<b>Skype:</b>briankwest</font></p>
                        </div>
                      </div>
                    </div>
                  </div>
                </blockquote>
              </font></div>
            <div class="HOEnZb">
              <div class="h5"><br>
                <br>
                <hr><br>
                Versendet mit <a moz-do-not-send="true"
                  href="http://www.emailn.de/" target="_blank">Emailn.de</a>
                - Freemail
                <br>
                <br>
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          </blockquote>
        </div>
        <br>
        <br clear="all">
        <div><br>
        </div>
        -- <br>
        <div dir="ltr">
          <p><font face="courier new, monospace"><b><i><font size="4">Brian
                    West</font></i></b><br>
              <span style="font-size:x-small"><a moz-do-not-send="true"
                  href="mailto:brian@freeswitch.org" target="_blank">brian@freeswitch.org</a></span></font></p>
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                moz-do-not-send="true"
                src="http://billing.freeswitch.org/templates/default/img/whmcslogo.png"><br>
            </font></p>
          <p><font face="courier new, monospace"><b><i>Twitter:
                  @FreeSWITCH , @briankwest</i></b><br>
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                href="http://www.freeswitchbook.com" target="_blank">http://www.freeswitchbook.com</a><br>
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                href="http://www.freeswitchcookbook.com" target="_blank">http://www.freeswitchcookbook.com</a></font></p>
          <p><font face="courier new, monospace"><b>T:</b>+19184209001 |
              <b>F:</b>+19184209002 | <b>M:</b>+1918424WEST (9378)<br>
              <b>iNUM:</b>+883 5100 1420 9001 |&nbsp;<b>ISN:</b>410*543 |&nbsp;<b>Skype:</b>briankwest</font></p>
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      <br>
      <pre wrap="">_________________________________________________________________________
Professional FreeSWITCH Consulting Services: 
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<a class="moz-txt-link-freetext" href="http://www.freeswitch.org">http://www.freeswitch.org</a></pre>
    </blockquote>
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