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<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-rtpreddec.top_of_page"></a>rtpreddec</span></h2>
<p>rtpreddec — RTP Redundant Audio Data (RED) decoder</p>
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<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtpreddec.properties"></a><h2>Properties</h2>
<div class="informaltable"><table class="informaltable" border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpreddec.html#GstRtpRedDec--pt" title="The “pt” property">pt</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpreddec.html#GstRtpRedDec--received" title="The “received” property">received</a></td>
<td class="property_flags">Read</td>
</tr>
</tbody>
</table></div>
</div>
<a name="GstRtpRedDec"></a><div class="refsect1">
<a name="gst-plugins-good-plugins-rtpreddec.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-good-plugins-rtpreddec.html#GstRtpRedDec-struct" title="struct GstRtpRedDec">GstRtpRedDec</a></td>
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</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtpreddec.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a>
<span class="lineart">╰──</span> GstRtpRedDec
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtpreddec.description"></a><h2>Description</h2>
<p>Decode Redundant Audio Data (RED) as per RFC 2198.</p>
<p>This element is mostly provided for chrome webrtc compatibility:
chrome will wrap ulpfec-protected streams in RED packets, and such
streams need to be unwrapped by this element before being passed on
to <a class="link" href="gst-plugins-good-plugins-rtpulpfecdec.html#GstRtpUlpFecDec"><span class="type">GstRtpUlpFecDec</span></a>.</p>
<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
types of the RED packets.</p>
<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
<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>
<div class="refsect2">
<a name="id-1.2.208.7.6"></a><h3>Example pipeline</h3>
<div class="informalexample">
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<td class="listing_lines" align="right"><pre>1</pre></td>
<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>
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</tbody>
</table>
</div>
This example will receive a stream with RED and ULP FEC and try to reconstruct the packets.
</div>
<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>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.208.7.8.1"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
<a class="link" href="gst-plugins-good-plugins-plugin-rtp.html#plugin-rtp">rtp</a>
</td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Hani Mustafa <hani@pexip.com>, Mikhail Fludkov <misha@pexip.com></td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Codec/Depayloader/Network/RTP</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.208.7.8.2"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>application/x-rtp</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>application/x-rtp</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtpreddec.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtpreddec.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstRtpRedDec-struct"></a><h3>struct GstRtpRedDec</h3>
<pre class="programlisting">struct GstRtpRedDec;</pre>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtpreddec.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstRtpRedDec--pt"></a><h3>The <code class="literal">“pt”</code> property</h3>
<pre class="programlisting"> “pt” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre>
<p>Payload type FEC packets.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: [G_MAXULONG,127]</p>
<p>Default value: -1</p>
</div>
<hr>
<div class="refsect2">
<a name="GstRtpRedDec--received"></a><h3>The <code class="literal">“received”</code> property</h3>
<pre class="programlisting"> “received” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>Count of received packets.</p>
<p>Flags: Read</p>
<p>Default value: 0</p>
</div>
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