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>videoframe-audiolevel: GStreamer Bad 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 Bad Plugins 1.0 Plugins Reference Manual"> 8<link rel="up" href="ch01.html" title="gst-plugins-bad Elements"> 9<link rel="prev" href="gst-plugins-bad-plugins-videodiff.html" title="videodiff"> 10<link rel="next" href="gst-plugins-bad-plugins-videoparse.html" title="videoparse"> 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%" align="left" class="shortcuts"> 17<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> 18 <a href="#gst-plugins-bad-plugins-videoframe-audiolevel.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> 19 <a href="#gst-plugins-bad-plugins-videoframe-audiolevel.object-hierarchy" class="shortcut">Object Hierarchy</a></span> 20</td> 21<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> 22<td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> 23<td><a accesskey="p" href="gst-plugins-bad-plugins-videodiff.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> 24<td><a accesskey="n" href="gst-plugins-bad-plugins-videoparse.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> 25</tr></table> 26<div class="refentry"> 27<a name="gst-plugins-bad-plugins-videoframe-audiolevel"></a><div class="titlepage"></div> 28<div class="refnamediv"><table width="100%"><tr> 29<td valign="top"> 30<h2><span class="refentrytitle"><a name="gst-plugins-bad-plugins-videoframe-audiolevel.top_of_page"></a>videoframe-audiolevel</span></h2> 31<p>videoframe-audiolevel</p> 32</td> 33<td class="gallery_image" valign="top" align="right"></td> 34</tr></table></div> 35<a name="GstVideoFrameAudioLevel"></a><div class="refsect1"> 36<a name="gst-plugins-bad-plugins-videoframe-audiolevel.other"></a><h2>Types and Values</h2> 37<div class="informaltable"><table class="informaltable" width="100%" border="0"> 38<colgroup> 39<col width="150px" class="name"> 40<col class="description"> 41</colgroup> 42<tbody><tr> 43<td class="datatype_keyword">struct</td> 44<td class="function_name"><a class="link" href="gst-plugins-bad-plugins-videoframe-audiolevel.html#GstVideoFrameAudioLevel-struct" title="struct GstVideoFrameAudioLevel">GstVideoFrameAudioLevel</a></td> 45</tr></tbody> 46</table></div> 47</div> 48<div class="refsect1"> 49<a name="gst-plugins-bad-plugins-videoframe-audiolevel.object-hierarchy"></a><h2>Object Hierarchy</h2> 50<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> 51 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> 52 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a> 53 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a> 54 <span class="lineart">╰──</span> GstVideoFrameAudioLevel 55</pre> 56</div> 57<div class="refsect1"> 58<a name="gst-plugins-bad-plugins-videoframe-audiolevel.description"></a><h2>Description</h2> 59<p>This element acts like a synchronized audio/video "level". It gathers 60all audio buffers sent between two video frames, and then sends a message 61that contains the RMS value of all samples for these buffers.</p> 62<div class="refsect3"> 63<a name="id-1.2.236.6.3"></a><h4>Example launch line</h4> 64<div class="informalexample"> 65 <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> 66 <tbody> 67 <tr> 68 <td class="listing_lines" align="right"><pre>1</pre></td> 69 <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> <span class="gtkdoc opt">-</span>m filesrc location<span class="gtkdoc opt">=</span><span class="string">"file.mkv"</span> <span class="gtkdoc opt">!</span> decodebin name<span class="gtkdoc opt">=</span>d <span class="gtkdoc opt">!</span> <span class="string">"audio/x-raw"</span> <span class="gtkdoc opt">!</span> videoframe<span class="gtkdoc opt">-</span>audiolevel name<span class="gtkdoc opt">=</span>l <span class="gtkdoc opt">!</span> autoaudiosink d<span class="gtkdoc opt">. !</span> <span class="string">"video/x-raw"</span> <span class="gtkdoc opt">!</span> l<span class="gtkdoc opt">.</span> l<span class="gtkdoc opt">. !</span> queue <span class="gtkdoc opt">!</span> autovideosink <span class="gtkdoc opt">]|</span></pre></td> 70 </tr> 71 </tbody> 72 </table> 73</div> 74 75</div> 76<div class="refsynopsisdiv"> 77<h2>Synopsis</h2> 78<div class="refsect2"> 79<a name="id-1.2.236.6.4.1"></a><h3>Element Information</h3> 80<div class="variablelist"><table border="0" class="variablelist"> 81<colgroup> 82<col align="left" valign="top"> 83<col> 84</colgroup> 85<tbody> 86<tr> 87<td><p><span class="term">plugin</span></p></td> 88<td> 89 <a class="link" href="gst-plugins-bad-plugins-plugin-videoframe_audiolevel.html#plugin-videoframe_audiolevel">videoframe_audiolevel</a> 90 </td> 91</tr> 92<tr> 93<td><p><span class="term">author</span></p></td> 94<td>Vivia Nikolaidou <vivia@toolsonair.com></td> 95</tr> 96<tr> 97<td><p><span class="term">class</span></p></td> 98<td>Filter/Analyzer/Audio</td> 99</tr> 100</tbody> 101</table></div> 102</div> 103<hr> 104<div class="refsect2"> 105<a name="id-1.2.236.6.4.2"></a><h3>Element Pads</h3> 106<div class="variablelist"><table border="0" class="variablelist"> 107<colgroup> 108<col align="left" valign="top"> 109<col> 110</colgroup> 111<tbody> 112<tr> 113<td><p><span class="term">name</span></p></td> 114<td>asink</td> 115</tr> 116<tr> 117<td><p><span class="term">direction</span></p></td> 118<td>sink</td> 119</tr> 120<tr> 121<td><p><span class="term">presence</span></p></td> 122<td>always</td> 123</tr> 124<tr> 125<td><p><span class="term">details</span></p></td> 126<td>audio/x-raw, format=(string){ S8, S16LE, S32LE, F32LE, F64LE }, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]</td> 127</tr> 128</tbody> 129</table></div> 130<div class="variablelist"><table border="0" class="variablelist"> 131<colgroup> 132<col align="left" valign="top"> 133<col> 134</colgroup> 135<tbody> 136<tr> 137<td><p><span class="term">name</span></p></td> 138<td>vsink</td> 139</tr> 140<tr> 141<td><p><span class="term">direction</span></p></td> 142<td>sink</td> 143</tr> 144<tr> 145<td><p><span class="term">presence</span></p></td> 146<td>always</td> 147</tr> 148<tr> 149<td><p><span class="term">details</span></p></td> 150<td>video/x-raw</td> 151</tr> 152</tbody> 153</table></div> 154<div class="variablelist"><table border="0" class="variablelist"> 155<colgroup> 156<col align="left" valign="top"> 157<col> 158</colgroup> 159<tbody> 160<tr> 161<td><p><span class="term">name</span></p></td> 162<td>asrc</td> 163</tr> 164<tr> 165<td><p><span class="term">direction</span></p></td> 166<td>source</td> 167</tr> 168<tr> 169<td><p><span class="term">presence</span></p></td> 170<td>always</td> 171</tr> 172<tr> 173<td><p><span class="term">details</span></p></td> 174<td>audio/x-raw, format=(string){ S8, S16LE, S32LE, F32LE, F64LE }, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]</td> 175</tr> 176</tbody> 177</table></div> 178<div class="variablelist"><table border="0" class="variablelist"> 179<colgroup> 180<col align="left" valign="top"> 181<col> 182</colgroup> 183<tbody> 184<tr> 185<td><p><span class="term">name</span></p></td> 186<td>vsrc</td> 187</tr> 188<tr> 189<td><p><span class="term">direction</span></p></td> 190<td>source</td> 191</tr> 192<tr> 193<td><p><span class="term">presence</span></p></td> 194<td>always</td> 195</tr> 196<tr> 197<td><p><span class="term">details</span></p></td> 198<td>video/x-raw</td> 199</tr> 200</tbody> 201</table></div> 202</div> 203</div> 204</div> 205<div class="refsect1"> 206<a name="gst-plugins-bad-plugins-videoframe-audiolevel.functions_details"></a><h2>Functions</h2> 207<p></p> 208</div> 209<div class="refsect1"> 210<a name="gst-plugins-bad-plugins-videoframe-audiolevel.other_details"></a><h2>Types and Values</h2> 211<div class="refsect2"> 212<a name="GstVideoFrameAudioLevel-struct"></a><h3>struct GstVideoFrameAudioLevel</h3> 213<pre class="programlisting">struct GstVideoFrameAudioLevel;</pre> 214</div> 215</div> 216</div> 217<div class="footer"> 218<hr>Generated by GTK-Doc V1.28</div> 219</body> 220</html>
