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  24 <a href="#gst-plugins-good-plugins-v4l2src.synopsis" class="shortcut">Top</a>
  25                    |
  26                   <a href="#gst-plugins-good-plugins-v4l2src.description" class="shortcut">Description</a>
  27                    |
  28                   <a href="#gst-plugins-good-plugins-v4l2src.object-hierarchy" class="shortcut">Object Hierarchy</a>
  29                    |
  30                   <a href="#gst-plugins-good-plugins-v4l2src.implemented-interfaces" class="shortcut">Implemented Interfaces</a>
  31                    |
  32                   <a href="#gst-plugins-good-plugins-v4l2src.properties" class="shortcut">Properties</a>
  33 </td></tr>
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  35 <div class="refentry">
  36 <a name="gst-plugins-good-plugins-v4l2src"></a><div class="titlepage"></div>
  37 <div class="refnamediv"><table width="100%"><tr>
  38 <td valign="top">
  39 <h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-v4l2src.top_of_page"></a>v4l2src</span></h2>
  40 <p>v4l2src — Reads frames from a Video4Linux2 device</p>
  41 </td>
  42 <td valign="top" align="right"></td>
  43 </tr></table></div>
  44 <div class="refsynopsisdiv">
  45 <a name="gst-plugins-good-plugins-v4l2src.synopsis"></a><h2>Synopsis</h2>
  46 <a name="GstV4l2Src"></a><pre class="synopsis">struct              <a class="link" href="gst-plugins-good-plugins-v4l2src.html#GstV4l2Src-struct" title="struct GstV4l2Src">GstV4l2Src</a>;
  47 </pre>
  48 </div>
  49 <div class="refsect1">
  50 <a name="gst-plugins-good-plugins-v4l2src.object-hierarchy"></a><h2>Object Hierarchy</h2>
  51 <pre class="synopsis">
  52   <a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a>
  53    +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstObject.html">GstObject</a>
  54          +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html">GstElement</a>
  55                +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstBaseSrc.html">GstBaseSrc</a>
  56                      +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstPushSrc.html">GstPushSrc</a>
  57                            +----GstV4l2Src
  58 </pre>
  59 </div>
  60 <div class="refsect1">
  61 <a name="gst-plugins-good-plugins-v4l2src.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
  62 <p>
  63 GstV4l2Src implements
  64  <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstUriHandler.html#GstURIHandler">GstURIHandler</a>,  <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstImplementsInterface.html">GstImplementsInterface</a>,  <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gsttuner.html#GstTuner">GstTuner</a>,  <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gstcolorbalance.html#GstColorBalance">GstColorBalance</a>,  <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gstvideoorientation.html#GstVideoOrientation">GstVideoOrientation</a> and  <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gstpropertyprobe.html#GstPropertyProbe">GstPropertyProbe</a>.</p>
  65 </div>
  66 <div class="refsect1">
  67 <a name="gst-plugins-good-plugins-v4l2src.properties"></a><h2>Properties</h2>
  68 <pre class="synopsis">
  69   "<a class="link" href="gst-plugins-good-plugins-v4l2src.html#GstV4l2Src--device" title='The "device" property'>device</a>"                   <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a>*                : Read / Write
  70   "<a class="link" href="gst-plugins-good-plugins-v4l2src.html#GstV4l2Src--device-name" title='The "device-name" property'>device-name</a>"              <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a>*                : Read
  71   "<a class="link" href="gst-plugins-good-plugins-v4l2src.html#GstV4l2Src--flags" title='The "flags" property'>flags</a>"                    <span class="type">GstV4l2DeviceTypeFlags</span>  : Read
  72   "<a class="link" href="gst-plugins-good-plugins-v4l2src.html#GstV4l2Src--queue-size" title='The "queue-size" property'>queue-size</a>"               <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a>                 : Read / Write
  73   "<a class="link" href="gst-plugins-good-plugins-v4l2src.html#GstV4l2Src--always-copy" title='The "always-copy" property'>always-copy</a>"              <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a>              : Read / Write
  74   "<a class="link" href="gst-plugins-good-plugins-v4l2src.html#GstV4l2Src--device-fd" title='The "device-fd" property'>device-fd</a>"                <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read
  75   "<a class="link" href="gst-plugins-good-plugins-v4l2src.html#GstV4l2Src--brightness" title='The "brightness" property'>brightness</a>"               <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  76   "<a class="link" href="gst-plugins-good-plugins-v4l2src.html#GstV4l2Src--contrast" title='The "contrast" property'>contrast</a>"                 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  77   "<a class="link" href="gst-plugins-good-plugins-v4l2src.html#GstV4l2Src--decimate" title='The "decimate" property'>decimate</a>"                 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  78   "<a class="link" href="gst-plugins-good-plugins-v4l2src.html#GstV4l2Src--hue" title='The "hue" property'>hue</a>"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  79   "<a class="link" href="gst-plugins-good-plugins-v4l2src.html#GstV4l2Src--saturation" title='The "saturation" property'>saturation</a>"               <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write
  80 </pre>
  81 </div>
  82 <div class="refsect1">
  83 <a name="gst-plugins-good-plugins-v4l2src.description"></a><h2>Description</h2>
  84 <p>
  85 v4l2src can be used to capture video from v4l2 devices, like webcams and tv
  86 cards.
  87 </p>
  88 <p>
  89 </p>
  90 <div class="refsect2">
  91 <a name="idp22122928"></a><h3>Example launch lines</h3>
  92 <div class="informalexample">
  93   <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
  94     <tbody>
  95       <tr>
  96         <td class="listing_lines" align="right"><pre>1</pre></td>
  97         <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch v4l2src <span class="gtkdoc opt">!</span> xvimagesink</pre></td>
  98       </tr>
  99     </tbody>
 100   </table>
 101 </div>
 102  This pipeline shows the video captured from /dev/video0 tv card and for
 103 webcams.
 104 <div class="informalexample">
 105   <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
 106     <tbody>
 107       <tr>
 108         <td class="listing_lines" align="right"><pre>1</pre></td>
 109         <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch v4l2src <span class="gtkdoc opt">!</span> jpegdec <span class="gtkdoc opt">!</span> xvimagesink</pre></td>
 110       </tr>
 111     </tbody>
 112   </table>
 113 </div>
 114  This pipeline shows the video captured from a webcam that delivers jpeg
 115 images.
 116 </div>
 117 <p>
 118 </p>
 119 <div class="refsynopsisdiv">
 120 <h2>Synopsis</h2>
 121 <div class="refsect2">
 122 <a name="idp19842224"></a><h3>Element Information</h3>
 123 <div class="variablelist"><table border="0">
 124 <col align="left" valign="top">
 125 <tbody>
 126 <tr>
 127 <td><p><span class="term">plugin</span></p></td>
 128 <td>
 129             <a class="link" href="gst-plugins-good-plugins-plugin-video4linux2.html#plugin-video4linux2">video4linux2</a>
 130           </td>
 131 </tr>
 132 <tr>
 133 <td><p><span class="term">author</span></p></td>
 134 <td>Edgard Lima &lt;edgard.lima@indt.org.br&gt;, Stefan Kost &lt;ensonic@users.sf.net&gt;</td>
 135 </tr>
 136 <tr>
 137 <td><p><span class="term">class</span></p></td>
 138 <td>Source/Video</td>
 139 </tr>
 140 </tbody>
 141 </table></div>
 142 </div>
 143 <hr>
 144 <div class="refsect2">
 145 <a name="idp19207776"></a><h3>Element Pads</h3>
 146 <div class="variablelist"><table border="0">
 147 <col align="left" valign="top">
 148 <tbody>
 149 <tr>
 150 <td><p><span class="term">name</span></p></td>
 151 <td>src</td>
 152 </tr>
 153 <tr>
 154 <td><p><span class="term">direction</span></p></td>
 155 <td>source</td>
 156 </tr>
 157 <tr>
 158 <td><p><span class="term">presence</span></p></td>
 159 <td>always</td>
 160 </tr>
 161 <tr>
 162 <td><p><span class="term">details</span></p></td>
 163 <td>video/x-raw-rgb, bpp=(int)8, depth=(int)8, red_mask=(int)224, green_mask=(int)28, blue_mask=(int)3, endianness=(int)1234, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 164 </tr>
 165 <tr>
 166 <td><p><span class="term"></span></p></td>
 167 <td> video/x-raw-rgb, bpp=(int)16, depth=(int)15, red_mask=(int)31744, green_mask=(int)992, blue_mask=(int)31, endianness=(int)1234, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 168 </tr>
 169 <tr>
 170 <td><p><span class="term"></span></p></td>
 171 <td> video/x-raw-rgb, bpp=(int)16, depth=(int)16, red_mask=(int)63488, green_mask=(int)2016, blue_mask=(int)31, endianness=(int)1234, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 172 </tr>
 173 <tr>
 174 <td><p><span class="term"></span></p></td>
 175 <td> video/x-raw-rgb, bpp=(int)16, depth=(int)15, red_mask=(int)31744, green_mask=(int)992, blue_mask=(int)31, endianness=(int)4321, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 176 </tr>
 177 <tr>
 178 <td><p><span class="term"></span></p></td>
 179 <td> video/x-raw-rgb, bpp=(int)16, depth=(int)16, red_mask=(int)63488, green_mask=(int)2016, blue_mask=(int)31, endianness=(int)4321, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 180 </tr>
 181 <tr>
 182 <td><p><span class="term"></span></p></td>
 183 <td> video/x-raw-rgb, bpp=(int)24, depth=(int)24, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, endianness=(int)4321, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 184 </tr>
 185 <tr>
 186 <td><p><span class="term"></span></p></td>
 187 <td> video/x-raw-rgb, bpp=(int)24, depth=(int)24, red_mask=(int)16711680, green_mask=(int)65280, blue_mask=(int)255, endianness=(int)4321, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 188 </tr>
 189 <tr>
 190 <td><p><span class="term"></span></p></td>
 191 <td> video/x-raw-rgb, bpp=(int)32, depth=(int)32, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, endianness=(int)4321, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 192 </tr>
 193 <tr>
 194 <td><p><span class="term"></span></p></td>
 195 <td> video/x-raw-rgb, bpp=(int)32, depth=(int)32, red_mask=(int)-16777216, green_mask=(int)16711680, blue_mask=(int)65280, endianness=(int)4321, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 196 </tr>
 197 <tr>
 198 <td><p><span class="term"></span></p></td>
 199 <td> video/x-raw-gray, bpp=(int)8, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 200 </tr>
 201 <tr>
 202 <td><p><span class="term"></span></p></td>
 203 <td> video/x-raw-yuv, format=(fourcc)YVU9, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 204 </tr>
 205 <tr>
 206 <td><p><span class="term"></span></p></td>
 207 <td> video/x-raw-yuv, format=(fourcc)YV12, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 208 </tr>
 209 <tr>
 210 <td><p><span class="term"></span></p></td>
 211 <td> video/x-raw-yuv, format=(fourcc)YUY2, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 212 </tr>
 213 <tr>
 214 <td><p><span class="term"></span></p></td>
 215 <td> video/x-raw-yuv, format=(fourcc)UYVY, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 216 </tr>
 217 <tr>
 218 <td><p><span class="term"></span></p></td>
 219 <td> video/x-raw-yuv, format=(fourcc)Y42B, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 220 </tr>
 221 <tr>
 222 <td><p><span class="term"></span></p></td>
 223 <td> video/x-raw-yuv, format=(fourcc)Y41B, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 224 </tr>
 225 <tr>
 226 <td><p><span class="term"></span></p></td>
 227 <td> video/x-raw-yuv, format=(fourcc)Y41P, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 228 </tr>
 229 <tr>
 230 <td><p><span class="term"></span></p></td>
 231 <td> video/x-raw-yuv, format=(fourcc)NV12, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 232 </tr>
 233 <tr>
 234 <td><p><span class="term"></span></p></td>
 235 <td> video/x-raw-yuv, format=(fourcc)NV21, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 236 </tr>
 237 <tr>
 238 <td><p><span class="term"></span></p></td>
 239 <td> video/x-raw-yuv, format=(fourcc)YUV9, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 240 </tr>
 241 <tr>
 242 <td><p><span class="term"></span></p></td>
 243 <td> video/x-raw-yuv, format=(fourcc)I420, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 244 </tr>
 245 <tr>
 246 <td><p><span class="term"></span></p></td>
 247 <td> video/x-raw-bayer, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 248 </tr>
 249 <tr>
 250 <td><p><span class="term"></span></p></td>
 251 <td> image/jpeg, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 252 </tr>
 253 <tr>
 254 <td><p><span class="term"></span></p></td>
 255 <td> image/jpeg, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 256 </tr>
 257 <tr>
 258 <td><p><span class="term"></span></p></td>
 259 <td> image/jpeg, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 260 </tr>
 261 <tr>
 262 <td><p><span class="term"></span></p></td>
 263 <td> video/x-dv, systemstream=(boolean)true, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 264 </tr>
 265 <tr>
 266 <td><p><span class="term"></span></p></td>
 267 <td> video/mpegts</td>
 268 </tr>
 269 <tr>
 270 <td><p><span class="term"></span></p></td>
 271 <td> video/x-sonix, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 272 </tr>
 273 <tr>
 274 <td><p><span class="term"></span></p></td>
 275 <td> video/x-pwc1, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 276 </tr>
 277 <tr>
 278 <td><p><span class="term"></span></p></td>
 279 <td> video/x-pwc2, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 280 </tr>
 281 <tr>
 282 <td><p><span class="term"></span></p></td>
 283 <td> video/x-raw-yuv, format=(fourcc)YVYU, width=(int)[ 1, 32768 ], height=(int)[ 1, 32768 ], framerate=(fraction)[ 0/1, 100/1 ]</td>
 284 </tr>
 285 </tbody>
 286 </table></div>
 287 </div>
 288 </div>
 289 <p>
 290 </p>
 291 </div>
 292 <div class="refsect1">
 293 <a name="gst-plugins-good-plugins-v4l2src.details"></a><h2>Details</h2>
 294 <div class="refsect2">
 295 <a name="GstV4l2Src-struct"></a><h3>struct GstV4l2Src</h3>
 296 <pre class="programlisting">struct GstV4l2Src;</pre>
 297 <p>
 298 Opaque object.
 299 </p>
 300 </div>
 301 </div>
 302 <div class="refsect1">
 303 <a name="gst-plugins-good-plugins-v4l2src.property-details"></a><h2>Property Details</h2>
 304 <div class="refsect2">
 305 <a name="GstV4l2Src--device"></a><h3>The <code class="literal">"device"</code> property</h3>
 306 <pre class="programlisting">  "device"                   <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a>*                : Read / Write</pre>
 307 <p>Device location.</p>
 308 <p>Default value: "/dev/video0"</p>
 309 </div>
 310 <hr>
 311 <div class="refsect2">
 312 <a name="GstV4l2Src--device-name"></a><h3>The <code class="literal">"device-name"</code> property</h3>
 313 <pre class="programlisting">  "device-name"              <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a>*                : Read</pre>
 314 <p>Name of the device.</p>
 315 <p>Default value: NULL</p>
 316 </div>
 317 <hr>
 318 <div class="refsect2">
 319 <a name="GstV4l2Src--flags"></a><h3>The <code class="literal">"flags"</code> property</h3>
 320 <pre class="programlisting">  "flags"                    <span class="type">GstV4l2DeviceTypeFlags</span>  : Read</pre>
 321 <p>Device type flags.</p>
 322 </div>
 323 <hr>
 324 <div class="refsect2">
 325 <a name="GstV4l2Src--queue-size"></a><h3>The <code class="literal">"queue-size"</code> property</h3>
 326 <pre class="programlisting">  "queue-size"               <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a>                 : Read / Write</pre>
 327 <p>Number of buffers to be enqueud in the driver in streaming mode.</p>
 328 <p>Allowed values: [1,16]</p>
 329 <p>Default value: 2</p>
 330 </div>
 331 <hr>
 332 <div class="refsect2">
 333 <a name="GstV4l2Src--always-copy"></a><h3>The <code class="literal">"always-copy"</code> property</h3>
 334 <pre class="programlisting">  "always-copy"              <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a>              : Read / Write</pre>
 335 <p>If the buffer will or not be used directly from mmap.</p>
 336 <p>Default value: TRUE</p>
 337 </div>
 338 <hr>
 339 <div class="refsect2">
 340 <a name="GstV4l2Src--device-fd"></a><h3>The <code class="literal">"device-fd"</code> property</h3>
 341 <pre class="programlisting">  "device-fd"                <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read</pre>
 342 <p>File descriptor of the device.</p>
 343 <p>Allowed values: &gt;= G_MAXULONG</p>
 344 <p>Default value: -1</p>
 345 </div>
 346 <hr>
 347 <div class="refsect2">
 348 <a name="GstV4l2Src--brightness"></a><h3>The <code class="literal">"brightness"</code> property</h3>
 349 <pre class="programlisting">  "brightness"               <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 350 <p>
 351 Picture brightness, or more precisely, the black level
 352 </p>
 353 <p>Default value: 0</p>
 354 <p class="since">Since 0.10.26</p>
 355 </div>
 356 <hr>
 357 <div class="refsect2">
 358 <a name="GstV4l2Src--contrast"></a><h3>The <code class="literal">"contrast"</code> property</h3>
 359 <pre class="programlisting">  "contrast"                 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 360 <p>
 361 Picture contrast or luma gain
 362 </p>
 363 <p>Default value: 0</p>
 364 <p class="since">Since 0.10.26</p>
 365 </div>
 366 <hr>
 367 <div class="refsect2">
 368 <a name="GstV4l2Src--decimate"></a><h3>The <code class="literal">"decimate"</code> property</h3>
 369 <pre class="programlisting">  "decimate"                 <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 370 <p>
 371 Only use every nth frame
 372 </p>
 373 <p>Allowed values: &gt;= 1</p>
 374 <p>Default value: 1</p>
 375 <p class="since">Since 0.10.26</p>
 376 </div>
 377 <hr>
 378 <div class="refsect2">
 379 <a name="GstV4l2Src--hue"></a><h3>The <code class="literal">"hue"</code> property</h3>
 380 <pre class="programlisting">  "hue"                      <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 381 <p>
 382 Hue or color balance
 383 </p>
 384 <p>Default value: 0</p>
 385 <p class="since">Since 0.10.26</p>
 386 </div>
 387 <hr>
 388 <div class="refsect2">
 389 <a name="GstV4l2Src--saturation"></a><h3>The <code class="literal">"saturation"</code> property</h3>
 390 <pre class="programlisting">  "saturation"               <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  : Read / Write</pre>
 391 <p>
 392 Picture color saturation or chroma gain
 393 </p>
 394 <p>Default value: 0</p>
 395 <p class="since">Since 0.10.26</p>
 396 </div>
 397 </div>
 398 </div>
 399 <div class="footer">
 400 <hr>
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