<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"><meta name="Generator" content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";
mso-fareast-language:EN-US;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0cm;
margin-right:0cm;
margin-bottom:0cm;
margin-left:36.0pt;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:261843434;
mso-list-type:hybrid;
mso-list-template-ids:812007580 269025295 269025305 269025307 269025295 269025305 269025307 269025295 269025305 269025307;}
@list l0:level1
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;}
@list l0:level2
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;}
@list l0:level3
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l0:level4
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;}
@list l0:level5
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;}
@list l0:level6
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l0:level7
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;}
@list l0:level8
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;}
@list l0:level9
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
ol
{margin-bottom:0cm;}
ul
{margin-bottom:0cm;}
--></style></head><body lang="EN-CA" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal">Hi all,</p><p class="MsoNormal"> </p><p class="MsoNormal">Like many others, I am interested in connecting a single source to multiple sinks in order to write the stream to disk in a playable format (AVI in my case) and also display it. I have reviewed various posts on the topic:</p>
<p class="MsoNormal"> </p><p class="MsoNormal"><a href="http://lists.live555.com/pipermail/live-devel/2006-July/004648.html">http://lists.live555.com/pipermail/live-devel/2006-July/004648.html</a></p><p class="MsoNormal">
<a href="http://lists.live555.com/pipermail/live-devel/2006-May/004454.html">http://lists.live555.com/pipermail/live-devel/2006-May/004454.html</a></p><p class="MsoNormal"><a href="http://lists.live555.com/pipermail/live-devel/2011-October/013919.html">http://lists.live555.com/pipermail/live-devel/2011-October/013919.html</a></p>
<p class="MsoNormal"> </p><p class="MsoNormal">To summarize advice seems to be to simply write the output in a filter, not using the AviFileSink class, because we do not yet have a general purpose ‘Frame Duplicator’ class (what I would have called a Tee Sink).</p>
<p class="MsoNormal"> </p><p class="MsoNormal">My questions for the community are these: </p><p class="MsoNormal"> </p><p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman""> </span></span>Would having a fully implemented Tee-sink / Frame Duplicator class offer significant advantages over ad-hoc methods of replicating a stream (eg. inside filters)?</p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman""> </span></span>How difficult would it be to implement this class (any gotchas, or should it be straightforward)?</p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman""> </span></span>Can anyone provide an outline of what this class would need to do?</p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level2 lfo1"><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman""> </span></span>Create a MediaSink and two or more FramedSources as members</p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level2 lfo1"><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman""> </span></span>Dispatch frame data from afterGettingFrame of the MediaSink to each of the afterGettingFunctions of the FramedSource..? </p>
<p class="MsoNormal"> </p><p class="MsoNormal">I am not an expert with this library, but I might be willing to take a first crack at this class if it is not going to be a huge commitment and looks like an efficient way to solve the problem.</p>
<p class="MsoNormal"> </p><p class="MsoNormal">As I look closely at this, it looks to me like a challenge may be that inheriting from both MediaSink and FramedSource could result in some clashes.</p><p class="MsoNormal"> </p>
<p class="MsoNormal">Any guidance would be appreciated.</p><p class="MsoNormal"> </p><p class="MsoNormal">Best,</p><p class="MsoNormal"><br>Dave McMordie</p></div></body></html>