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| <div class="refentry"> |
| <a name="gst-plugins-good-plugins-videocrop"></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-videocrop.top_of_page"></a>videocrop</span></h2> |
| <p>videocrop — Crops video into a user-defined region</p> |
| </td> |
| <td class="gallery_image" valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-videocrop.properties"></a><h2>Properties</h2> |
| <div class="informaltable"><table 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="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-videocrop.html#GstVideoCrop--bottom" title="The “bottom” property">bottom</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-videocrop.html#GstVideoCrop--left" title="The “left” property">left</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-videocrop.html#GstVideoCrop--right" title="The “right” property">right</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-videocrop.html#GstVideoCrop--top" title="The “top” property">top</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <a name="GstVideoCrop"></a><div class="refsect1"> |
| <a name="gst-plugins-good-plugins-videocrop.other"></a><h2>Types and Values</h2> |
| <div class="informaltable"><table 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-videocrop.html#GstVideoCrop-struct" title="struct GstVideoCrop">GstVideoCrop</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-videocrop.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-libs/html/GstBaseTransform.html">GstBaseTransform</a> |
| <span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gstvideofilter.html#GstVideoFilter">GstVideoFilter</a> |
| <span class="lineart">╰──</span> GstVideoCrop |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-videocrop.description"></a><h2>Description</h2> |
| <p>This element crops video frames, meaning it can remove parts of the |
| picture on the left, right, top or bottom of the picture and output |
| a smaller picture than the input picture, with the unwanted parts at the |
| border removed.</p> |
| <p>The videocrop element is similar to the videobox element, but its main |
| goal is to support a multitude of formats as efficiently as possible. |
| Unlike videbox, it cannot add borders to the picture and unlike videbox |
| it will always output images in exactly the same format as the input image.</p> |
| <p>If there is nothing to crop, the element will operate in pass-through mode.</p> |
| <p>Note that no special efforts are made to handle chroma-subsampled formats |
| in the case of odd-valued cropping and compensate for sub-unit chroma plane |
| shifts for such formats in the case where the <a class="link" href="gst-plugins-good-plugins-videocrop.html#GstVideoCrop--left" title="The “left” property"><span class="type">“left”</span></a> or |
| <a class="link" href="gst-plugins-good-plugins-videocrop.html#GstVideoCrop--top" title="The “top” property"><span class="type">“top”</span></a> property is set to an odd number. This doesn't matter for |
| most use cases, but it might matter for yours.</p> |
| <div class="refsect2"> |
| <a name="id-1.2.158.7.6"></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> videocrop top<span class="gtkdoc opt">=</span><span class="number">42</span> left<span class="gtkdoc opt">=</span><span class="number">1</span> right<span class="gtkdoc opt">=</span><span class="number">4</span> bottom<span class="gtkdoc opt">=</span><span class="number">0</span> <span class="gtkdoc opt">!</span> ximagesink</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| |
| </div> |
| <div class="refsynopsisdiv"> |
| <h2>Synopsis</h2> |
| <div class="refsect2"> |
| <a name="id-1.2.158.7.7.1"></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>Tim-Philipp Müller <tim centricular net></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-1.2.158.7.7.2"></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> |
| <p> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-videocrop.functions_details"></a><h2>Functions</h2> |
| <p></p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-videocrop.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstVideoCrop-struct"></a><h3>struct GstVideoCrop</h3> |
| <pre class="programlisting">struct GstVideoCrop;</pre> |
| <p> |
| </p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-videocrop.property-details"></a><h2>Property Details</h2> |
| <div class="refsect2"> |
| <a name="GstVideoCrop--bottom"></a><h3>The <code class="literal">“bottom”</code> property</h3> |
| <pre class="programlisting"> “bottom” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> |
| <p>Pixels to crop at bottom (-1 to auto-crop).</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: >= G_MAXULONG</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstVideoCrop--left"></a><h3>The <code class="literal">“left”</code> property</h3> |
| <pre class="programlisting"> “left” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> |
| <p>Pixels to crop at left (-1 to auto-crop).</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: >= G_MAXULONG</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstVideoCrop--right"></a><h3>The <code class="literal">“right”</code> property</h3> |
| <pre class="programlisting"> “right” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> |
| <p>Pixels to crop at right (-1 to auto-crop).</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: >= G_MAXULONG</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstVideoCrop--top"></a><h3>The <code class="literal">“top”</code> property</h3> |
| <pre class="programlisting"> “top” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> |
| <p>Pixels to crop at top (-1 to auto-crop).</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: >= G_MAXULONG</p> |
| <p>Default value: 0</p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-videocrop.see-also"></a><h2>See Also</h2> |
| <p><a class="link" href="gst-plugins-good-plugins-videobox.html#GstVideoBox"><span class="type">GstVideoBox</span></a></p> |
| </div> |
| </div> |
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