<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>aspectratiocrop: GStreamer Good Plugins 1.0 Plugins Reference Manual</title> <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> <link rel="home" href="index.html" title="GStreamer Good Plugins 1.0 Plugins Reference Manual"> <link rel="up" href="ch01.html" title="gst-plugins-good Elements"> <link rel="prev" href="gst-plugins-good-plugins-apev2mux.html" title="apev2mux"> <link rel="next" href="gst-plugins-good-plugins-audioamplify.html" title="audioamplify"> <meta name="generator" content="GTK-Doc V1.24 (XML mode)"> <link rel="stylesheet" href="style.css" type="text/css"> </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="5"><tr valign="middle"> <td width="100%" align="left" class="shortcuts"> <a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> <a href="#gst-plugins-good-plugins-aspectratiocrop.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> <a href="#gst-plugins-good-plugins-aspectratiocrop.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_interfaces"> <span class="dim">|</span> <a href="#gst-plugins-good-plugins-aspectratiocrop.implemented-interfaces" class="shortcut">Implemented Interfaces</a></span><span id="nav_properties"> <span class="dim">|</span> <a href="#gst-plugins-good-plugins-aspectratiocrop.properties" class="shortcut">Properties</a></span> </td> <td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> <td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> <td><a accesskey="p" href="gst-plugins-good-plugins-apev2mux.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> <td><a accesskey="n" href="gst-plugins-good-plugins-audioamplify.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> </tr></table> <div class="refentry"> <a name="gst-plugins-good-plugins-aspectratiocrop"></a><div class="titlepage"></div> <div class="refnamediv"><table width="100%"><tr> <td valign="top"> <h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-aspectratiocrop.top_of_page"></a>aspectratiocrop</span></h2> <p>aspectratiocrop</p> </td> <td class="gallery_image" valign="top" align="right"></td> </tr></table></div> <div class="refsect1"> <a name="gst-plugins-good-plugins-aspectratiocrop.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"><span class="type">GstFraction</span></td> <td class="property_name"><a class="link" href="gst-plugins-good-plugins-aspectratiocrop.html#GstAspectRatioCrop--aspect-ratio" title="The “aspect-ratio” property">aspect-ratio</a></td> <td class="property_flags">Read / Write</td> </tr></tbody> </table></div> </div> <a name="GstAspectRatioCrop"></a><div class="refsect1"> <a name="gst-plugins-good-plugins-aspectratiocrop.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-aspectratiocrop.html#GstAspectRatioCrop-struct" title="struct GstAspectRatioCrop">GstAspectRatioCrop</a></td> </tr></tbody> </table></div> </div> <div class="refsect1"> <a name="gst-plugins-good-plugins-aspectratiocrop.object-hierarchy"></a><h2>Object Hierarchy</h2> <pre class="screen"> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a> <span class="lineart">╰──</span> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> <span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstObject.html">GstObject</a> <span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html">GstElement</a> <span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstBin.html">GstBin</a> <span class="lineart">╰──</span> GstAspectRatioCrop </pre> </div> <div class="refsect1"> <a name="gst-plugins-good-plugins-aspectratiocrop.implemented-interfaces"></a><h2>Implemented Interfaces</h2> <p> GstAspectRatioCrop implements <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstChildProxy.html">GstChildProxy</a>.</p> </div> <div class="refsect1"> <a name="gst-plugins-good-plugins-aspectratiocrop.description"></a><h2>Description</h2> <p>This element crops video frames to a specified <a class="link" href="gst-plugins-good-plugins-aspectratiocrop.html#GstAspectRatioCrop--aspect-ratio" title="The “aspect-ratio” property"><span class="type">“aspect-ratio”</span></a>.</p> <p>If the aspect-ratio is already correct, the element will operate in pass-through mode.</p> <div class="refsect2"> <a name="id-1.2.14.8.4"></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="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> <span class="gtkdoc opt">-</span>v videotestsrc <span class="gtkdoc opt">!</span> video<span class="gtkdoc opt">/</span>x<span class="gtkdoc opt">-</span>raw<span class="gtkdoc opt">,</span>height<span class="gtkdoc opt">=</span><span class="number">640</span><span class="gtkdoc opt">,</span>width<span class="gtkdoc opt">=</span><span class="number">480</span> <span class="gtkdoc opt">!</span> aspectratiocrop aspect<span class="gtkdoc opt">-</span>ratio<span class="gtkdoc opt">=</span><span class="number">16</span><span class="gtkdoc opt">/</span><span class="number">9</span> <span class="gtkdoc opt">!</span> ximagesink</pre></td> </tr> </tbody> </table> </div> This pipeline generates a videostream in 4/3 and crops it to 16/9. </div> <div class="refsynopsisdiv"> <h2>Synopsis</h2> <div class="refsect2"> <a name="id-1.2.14.8.5.1"></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-videocrop.html#plugin-videocrop">videocrop</a> </td> </tr> <tr> <td><p><span class="term">author</span></p></td> <td>Thijs Vermeir <thijsvermeir@gmail.com></td> </tr> <tr> <td><p><span class="term">class</span></p></td> <td>Filter/Effect/Video</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2"> <a name="id-1.2.14.8.5.2"></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>video/x-raw, format=(string){ RGBx, xRGB, BGRx, xBGR, RGBA, ARGB, BGRA, ABGR, RGB, BGR, AYUV, YUY2, YVYU, UYVY, I420, YV12, RGB16, RGB15, GRAY8, NV12, NV21, GRAY16_LE, GRAY16_BE }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</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>video/x-raw, format=(string){ RGBx, xRGB, BGRx, xBGR, RGBA, ARGB, BGRA, ABGR, RGB, BGR, AYUV, YUY2, YVYU, UYVY, I420, YV12, RGB16, RGB15, GRAY8, NV12, NV21, GRAY16_LE, GRAY16_BE }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td> </tr> </tbody> </table></div> </div> </div> </div> <div class="refsect1"> <a name="gst-plugins-good-plugins-aspectratiocrop.functions_details"></a><h2>Functions</h2> <p></p> </div> <div class="refsect1"> <a name="gst-plugins-good-plugins-aspectratiocrop.other_details"></a><h2>Types and Values</h2> <div class="refsect2"> <a name="GstAspectRatioCrop-struct"></a><h3>struct GstAspectRatioCrop</h3> <pre class="programlisting">struct GstAspectRatioCrop;</pre> </div> </div> <div class="refsect1"> <a name="gst-plugins-good-plugins-aspectratiocrop.property-details"></a><h2>Property Details</h2> <div class="refsect2"> <a name="GstAspectRatioCrop--aspect-ratio"></a><h3>The <code class="literal">“aspect-ratio”</code> property</h3> <pre class="programlisting"> “aspect-ratio” <span class="type">GstFraction</span></pre> <p>Target aspect-ratio of video.</p> <p>Flags: Read / Write</p> </div> </div> <div class="refsect1"> <a name="gst-plugins-good-plugins-aspectratiocrop.see-also"></a><h2>See Also</h2> <p><a class="link" href="gst-plugins-good-plugins-videocrop.html#GstVideoCrop"><span class="type">GstVideoCrop</span></a></p> </div> </div> <div class="footer"> <hr>Generated by GTK-Doc V1.24</div> </body> </html>