<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>videoanalyse</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
<link rel="home" href="index.html" title="GStreamer Bad Plugins 0.10 Plugins Reference Manual">
<link rel="up" href="ch01.html" title="gst-plugins-bad Elements">
<link rel="prev" href="gst-plugins-bad-plugins-valve.html" title="valve">
<link rel="next" href="gst-plugins-bad-plugins-videodetect.html" title="videodetect">
<meta name="generator" content="GTK-Doc V1.13 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
<link rel="chapter" href="ch01.html" title="gst-plugins-bad Elements">
<link rel="chapter" href="ch02.html" title="gst-plugins-bad Plugins">
<link rel="chapter" href="ch03.html" title="gst-plugins-bad Classes">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2">
<tr valign="middle">
<td><a accesskey="p" href="gst-plugins-bad-plugins-valve.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td>
<td><a accesskey="u" href="ch01.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td>
<th width="100%" align="center">GStreamer Bad Plugins 0.10 Plugins Reference Manual</th>
<td><a accesskey="n" href="gst-plugins-bad-plugins-videodetect.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
</tr>
<tr><td colspan="5" class="shortcuts">
<a href="#gst-plugins-bad-plugins-videoanalyse.synopsis" class="shortcut">Top</a>
|
<a href="#gst-plugins-bad-plugins-videoanalyse.description" class="shortcut">Description</a>
|
<a href="#gst-plugins-bad-plugins-videoanalyse.object-hierarchy" class="shortcut">Object Hierarchy</a>
|
<a href="#gst-plugins-bad-plugins-videoanalyse.properties" class="shortcut">Properties</a>
</td></tr>
</table>
<div class="refentry" title="videoanalyse">
<a name="gst-plugins-bad-plugins-videoanalyse"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-bad-plugins-videoanalyse.top_of_page"></a>videoanalyse</span></h2>
<p>videoanalyse — Analyse video signal</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv" title="Synopsis">
<a name="gst-plugins-bad-plugins-videoanalyse.synopsis"></a><h2>Synopsis</h2>
<a name="GstVideoAnalyse"></a><pre class="synopsis"> <a class="link" href="gst-plugins-bad-plugins-videoanalyse.html#GstVideoAnalyse-struct" title="GstVideoAnalyse">GstVideoAnalyse</a>;
</pre>
</div>
<div class="refsect1" title="Object Hierarchy">
<a name="gst-plugins-bad-plugins-videoanalyse.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
<a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
+----<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstObject.html">GstObject</a>
+----<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html">GstElement</a>
+----<a href="/usr/share/gtk-doc/html/gstreamer-libs-0.10/GstBaseTransform.html">GstBaseTransform</a>
+----<a href="/usr/share/gtk-doc/html/gst-plugins-base-libs-0.10/gst-plugins-base-libs-gstvideofilter.html#GstVideoFilter">GstVideoFilter</a>
+----GstVideoAnalyse
</pre>
</div>
<div class="refsect1" title="Properties">
<a name="gst-plugins-bad-plugins-videoanalyse.properties"></a><h2>Properties</h2>
<pre class="synopsis">
"<a class="link" href="gst-plugins-bad-plugins-videoanalyse.html#GstVideoAnalyse--message" title='The "message" property'>message</a>" <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write / Construct
</pre>
</div>
<div class="refsect1" title="Description">
<a name="gst-plugins-bad-plugins-videoanalyse.description"></a><h2>Description</h2>
<p>
This plugin analyses every video frame and if the <a class="link" href="gst-plugins-bad-plugins-videoanalyse.html#GstVideoAnalyse--message" title='The "message" property'><span class="type">"message"</span></a>
property is <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><span class="type">TRUE</span></a>, posts an element message with video statistics called
<code class="classname">"GstVideoAnalyse"</code>.
</p>
<p>
The message's structure contains these fields:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem"><p>
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a>
<code class="classname">"timestamp"</code>:
the timestamp of the buffer that triggered the message.
</p></li>
<li class="listitem"><p>
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a>
<code class="classname">"stream-time"</code>:
the stream time of the buffer.
</p></li>
<li class="listitem"><p>
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a>
<code class="classname">"running-time"</code>:
the running_time of the buffer.
</p></li>
<li class="listitem"><p>
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a>
<code class="classname">"duration"</code>:
the duration of the buffer.
</p></li>
<li class="listitem"><p>
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a>
<code class="classname">"brightness"</code>:
the average brightness of the frame.
</p></li>
<li class="listitem"><p>
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a>
<code class="classname">"brightness-variance"</code>:
the brightness variance of the frame.
</p></li>
</ul></div>
<p>
</p>
<p>
</p>
<div class="refsect2" title="Example launch line">
<a name="id418419"></a><h3>Example launch line</h3>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1</pre></td>
<td class="listing_code"><pre class="programlisting">gst<span class="symbol">-</span>launch <span class="symbol">-</span>m videotestsrc <span class="symbol">!</span> videoanalyse <span class="symbol">!</span> ffmpegcolorspace <span class="symbol">!</span> ximagesink</pre></td>
</tr>
</tbody>
</table>
</div>
This pipeline emits messages to the console for each frame that has been analysed.
</div>
<p>
</p>
<p>
Last reviewed on 2007-05-30 (0.10.5)</p>
</div>
<div class="refsect1" title="Details">
<a name="gst-plugins-bad-plugins-videoanalyse.details"></a><h2>Details</h2>
<div class="refsect2" title="GstVideoAnalyse">
<a name="GstVideoAnalyse-struct"></a><h3>GstVideoAnalyse</h3>
<pre class="programlisting">typedef struct _GstVideoAnalyse GstVideoAnalyse;</pre>
<p>
Opaque datastructure.</p>
</div>
</div>
<div class="refsect1" title="Property Details">
<a name="gst-plugins-bad-plugins-videoanalyse.property-details"></a><h2>Property Details</h2>
<div class="refsect2" title='The "message" property'>
<a name="GstVideoAnalyse--message"></a><h3>The <code class="literal">"message"</code> property</h3>
<pre class="programlisting"> "message" <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write / Construct</pre>
<p>Post statics messages.</p>
<p>Default value: TRUE</p>
</div>
</div>
</div>
<div class="footer">
<hr>
Generated by GTK-Doc V1.13</div>
</body>
</html>
