1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>rtpreddec: GStreamer Good Plugins 1.0 Plugins Reference Manual</title> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="index.html" title="GStreamer Good Plugins 1.0 Plugins Reference Manual"> 8<link rel="up" href="ch01.html" title="gst-plugins-good Elements"> 9<link rel="prev" href="gst-plugins-good-plugins-rtpqdm2depay.html" title="rtpqdm2depay"> 10<link rel="next" href="gst-plugins-good-plugins-rtpredenc.html" title="rtpredenc"> 11<meta name="generator" content="GTK-Doc V1.28 (XML mode)"> 12<link rel="stylesheet" href="style.css" type="text/css"> 13</head> 14<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 15<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle"> 16<td width="100%" 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src="right.png" width="16" height="16" border="0" alt="Next"></a></td> 26</tr></table> 27<div class="refentry"> 28<a name="gst-plugins-good-plugins-rtpreddec"></a><div class="titlepage"></div> 29<div class="refnamediv"><table width="100%"><tr> 30<td valign="top"> 31<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-rtpreddec.top_of_page"></a>rtpreddec</span></h2> 32<p>rtpreddec — RTP Redundant Audio Data (RED) decoder</p> 33</td> 34<td class="gallery_image" valign="top" align="right"></td> 35</tr></table></div> 36<div class="refsect1"> 37<a name="gst-plugins-good-plugins-rtpreddec.properties"></a><h2>Properties</h2> 38<div class="informaltable"><table class="informaltable" border="0"> 39<colgroup> 40<col width="150px" class="properties_type"> 41<col width="300px" class="properties_name"> 42<col width="200px" class="properties_flags"> 43</colgroup> 44<tbody> 45<tr> 46<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> 47<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpreddec.html#GstRtpRedDec--pt" title="The “pt” property">pt</a></td> 48<td class="property_flags">Read / Write</td> 49</tr> 50<tr> 51<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> 52<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpreddec.html#GstRtpRedDec--received" title="The “received” property">received</a></td> 53<td class="property_flags">Read</td> 54</tr> 55</tbody> 56</table></div> 57</div> 58<a name="GstRtpRedDec"></a><div class="refsect1"> 59<a name="gst-plugins-good-plugins-rtpreddec.other"></a><h2>Types and Values</h2> 60<div class="informaltable"><table class="informaltable" width="100%" border="0"> 61<colgroup> 62<col width="150px" class="name"> 63<col class="description"> 64</colgroup> 65<tbody><tr> 66<td class="datatype_keyword">struct</td> 67<td class="function_name"><a class="link" href="gst-plugins-good-plugins-rtpreddec.html#GstRtpRedDec-struct" title="struct GstRtpRedDec">GstRtpRedDec</a></td> 68</tr></tbody> 69</table></div> 70</div> 71<div class="refsect1"> 72<a name="gst-plugins-good-plugins-rtpreddec.object-hierarchy"></a><h2>Object Hierarchy</h2> 73<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> 74 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> 75 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a> 76 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a> 77 <span class="lineart">╰──</span> GstRtpRedDec 78</pre> 79</div> 80<div class="refsect1"> 81<a name="gst-plugins-good-plugins-rtpreddec.description"></a><h2>Description</h2> 82<p>Decode Redundant Audio Data (RED) as per RFC 2198.</p> 83<p>This element is mostly provided for chrome webrtc compatibility: 84chrome will wrap ulpfec-protected streams in RED packets, and such 85streams need to be unwrapped by this element before being passed on 86to <a class="link" href="gst-plugins-good-plugins-rtpulpfecdec.html#GstRtpUlpFecDec"><span class="type">GstRtpUlpFecDec</span></a>.</p> 87<p>The <a class="link" href="gst-plugins-good-plugins-rtpreddec.html#GstRtpRedDec--pt" title="The “pt” property"><span class="type">“pt”</span></a> property should be set to the expected payload 88types of the RED packets.</p> 89<p>When using <a class="link" href="gst-plugins-good-plugins-rtpbin.html#GstRtpBin"><span class="type">GstRtpBin</span></a>, this element should be inserted through the 90<a class="link" href="gst-plugins-good-plugins-rtpbin.html#GstRtpBin-request-aux-receiver" title="The “request-aux-receiver” signal"><span class="type">“request-aux-receiver”</span></a> signal.</p> 91<div class="refsect2"> 92<a name="id-1.2.208.7.6"></a><h3>Example pipeline</h3> 93<div class="informalexample"> 94 <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> 95 <tbody> 96 <tr> 97 <td class="listing_lines" align="right"><pre>1</pre></td> 98 <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> udpsrc port<span class="gtkdoc opt">=</span><span class="number">8888</span> caps<span class="gtkdoc opt">=</span><span class="string">"application/x-rtp, payload=96, clock-rate=90000"</span> <span class="gtkdoc opt">!</span> rtpreddec pt<span class="gtkdoc opt">=</span><span class="number">122</span> <span class="gtkdoc opt">!</span> rtpstorage size<span class="gtkdoc opt">-</span>time<span class="gtkdoc opt">=</span><span class="number">220000000</span> <span class="gtkdoc opt">!</span> rtpssrcdemux <span class="gtkdoc opt">!</span> application<span class="gtkdoc opt">/</span>x<span class="gtkdoc opt">-</span>rtp<span class="gtkdoc opt">,</span> payload<span class="gtkdoc opt">=</span><span class="number">96</span><span class="gtkdoc opt">,</span> clock<span class="gtkdoc opt">-</span>rate<span class="gtkdoc opt">=</span><span class="number">90000</span><span class="gtkdoc opt">,</span> media<span class="gtkdoc opt">=</span>video<span class="gtkdoc opt">,</span> encoding<span class="gtkdoc opt">-</span>name<span class="gtkdoc opt">=</span>H264 <span class="gtkdoc opt">!</span> rtpjitterbuffer <span class="keyword">do</span><span class="gtkdoc opt">-</span>lost<span class="gtkdoc opt">=</span><span class="number">1</span> latency<span class="gtkdoc opt">=</span><span class="number">200</span> <span class="gtkdoc opt">!</span> rtpulpfecdec pt<span class="gtkdoc opt">=</span><span class="number">122</span> <span class="gtkdoc opt">!</span> rtph264depay <span class="gtkdoc opt">!</span> avdec_h264 <span class="gtkdoc opt">!</span> videoconvert <span class="gtkdoc opt">!</span> autovideosink</pre></td> 99 </tr> 100 </tbody> 101 </table> 102</div> 103 This example will receive a stream with RED and ULP FEC and try to reconstruct the packets. 104</div> 105<p>See also: <a class="link" href="gst-plugins-good-plugins-rtpredenc.html#GstRtpRedEnc"><span class="type">GstRtpRedEnc</span></a>, <span class="type">GstWebRTCBin</span>, <a class="link" href="gst-plugins-good-plugins-rtpbin.html#GstRtpBin"><span class="type">GstRtpBin</span></a></p> 106<div class="refsynopsisdiv"> 107<h2>Synopsis</h2> 108<div class="refsect2"> 109<a name="id-1.2.208.7.8.1"></a><h3>Element Information</h3> 110<div class="variablelist"><table border="0" class="variablelist"> 111<colgroup> 112<col align="left" valign="top"> 113<col> 114</colgroup> 115<tbody> 116<tr> 117<td><p><span class="term">plugin</span></p></td> 118<td> 119 <a class="link" href="gst-plugins-good-plugins-plugin-rtp.html#plugin-rtp">rtp</a> 120 </td> 121</tr> 122<tr> 123<td><p><span class="term">author</span></p></td> 124<td>Hani Mustafa <hani@pexip.com>, Mikhail Fludkov <misha@pexip.com></td> 125</tr> 126<tr> 127<td><p><span class="term">class</span></p></td> 128<td>Codec/Depayloader/Network/RTP</td> 129</tr> 130</tbody> 131</table></div> 132</div> 133<hr> 134<div class="refsect2"> 135<a name="id-1.2.208.7.8.2"></a><h3>Element Pads</h3> 136<div class="variablelist"><table border="0" class="variablelist"> 137<colgroup> 138<col align="left" valign="top"> 139<col> 140</colgroup> 141<tbody> 142<tr> 143<td><p><span class="term">name</span></p></td> 144<td>sink</td> 145</tr> 146<tr> 147<td><p><span class="term">direction</span></p></td> 148<td>sink</td> 149</tr> 150<tr> 151<td><p><span class="term">presence</span></p></td> 152<td>always</td> 153</tr> 154<tr> 155<td><p><span class="term">details</span></p></td> 156<td>application/x-rtp</td> 157</tr> 158</tbody> 159</table></div> 160<div class="variablelist"><table border="0" class="variablelist"> 161<colgroup> 162<col align="left" valign="top"> 163<col> 164</colgroup> 165<tbody> 166<tr> 167<td><p><span class="term">name</span></p></td> 168<td>src</td> 169</tr> 170<tr> 171<td><p><span class="term">direction</span></p></td> 172<td>source</td> 173</tr> 174<tr> 175<td><p><span class="term">presence</span></p></td> 176<td>always</td> 177</tr> 178<tr> 179<td><p><span class="term">details</span></p></td> 180<td>application/x-rtp</td> 181</tr> 182</tbody> 183</table></div> 184</div> 185</div> 186</div> 187<div class="refsect1"> 188<a name="gst-plugins-good-plugins-rtpreddec.functions_details"></a><h2>Functions</h2> 189<p></p> 190</div> 191<div class="refsect1"> 192<a name="gst-plugins-good-plugins-rtpreddec.other_details"></a><h2>Types and Values</h2> 193<div class="refsect2"> 194<a name="GstRtpRedDec-struct"></a><h3>struct GstRtpRedDec</h3> 195<pre class="programlisting">struct GstRtpRedDec;</pre> 196</div> 197</div> 198<div class="refsect1"> 199<a name="gst-plugins-good-plugins-rtpreddec.property-details"></a><h2>Property Details</h2> 200<div class="refsect2"> 201<a name="GstRtpRedDec--pt"></a><h3>The <code class="literal">“pt”</code> property</h3> 202<pre class="programlisting"> “pt” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> 203<p>Payload type FEC packets.</p> 204<p>Flags: Read / Write</p> 205<p>Allowed values: [G_MAXULONG,127]</p> 206<p>Default value: -1</p> 207</div> 208<hr> 209<div class="refsect2"> 210<a name="GstRtpRedDec--received"></a><h3>The <code class="literal">“received”</code> property</h3> 211<pre class="programlisting"> “received” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> 212<p>Count of received packets.</p> 213<p>Flags: Read</p> 214<p>Default value: 0</p> 215</div> 216</div> 217</div> 218<div class="footer"> 219<hr>Generated by 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