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>jpegenc: GStreamer Good 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 Good Plugins 1.0 Plugins Reference Manual"> 8<link rel="up" href="ch01.html" title="gst-plugins-good Elements"> 9<link rel="prev" href="gst-plugins-good-plugins-jpegdec.html" title="jpegdec"> 10<link rel="next" href="gst-plugins-good-plugins-lamemp3enc.html" title="lamemp3enc"> 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-good-plugins-jpegenc.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> 19 <a href="#gst-plugins-good-plugins-jpegenc.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_interfaces"> <span class="dim">|</span> 20 <a href="#gst-plugins-good-plugins-jpegenc.implemented-interfaces" class="shortcut">Implemented Interfaces</a></span><span id="nav_properties"> <span class="dim">|</span> 21 <a href="#gst-plugins-good-plugins-jpegenc.properties" class="shortcut">Properties</a></span> 22</td> 23<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> 24<td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> 25<td><a accesskey="p" href="gst-plugins-good-plugins-jpegdec.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> 26<td><a accesskey="n" href="gst-plugins-good-plugins-lamemp3enc.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> 27</tr></table> 28<div class="refentry"> 29<a name="gst-plugins-good-plugins-jpegenc"></a><div class="titlepage"></div> 30<div class="refnamediv"><table width="100%"><tr> 31<td valign="top"> 32<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-jpegenc.top_of_page"></a>jpegenc</span></h2> 33<p>jpegenc</p> 34</td> 35<td class="gallery_image" valign="top" align="right"></td> 36</tr></table></div> 37<div class="refsect1"> 38<a name="gst-plugins-good-plugins-jpegenc.properties"></a><h2>Properties</h2> 39<div class="informaltable"><table class="informaltable" border="0"> 40<colgroup> 41<col width="150px" class="properties_type"> 42<col width="300px" class="properties_name"> 43<col width="200px" class="properties_flags"> 44</colgroup> 45<tbody> 46<tr> 47<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> 48<td class="property_name"><a class="link" href="gst-plugins-good-plugins-jpegenc.html#GstJpegEnc--quality" title="The “quality” property">quality</a></td> 49<td class="property_flags">Read / Write</td> 50</tr> 51<tr> 52<td class="property_type"><span class="type">GstIDCTMethod</span></td> 53<td class="property_name"><a class="link" href="gst-plugins-good-plugins-jpegenc.html#GstJpegEnc--idct-method" title="The “idct-method” property">idct-method</a></td> 54<td class="property_flags">Read / Write</td> 55</tr> 56<tr> 57<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> 58<td class="property_name"><a class="link" href="gst-plugins-good-plugins-jpegenc.html#GstJpegEnc--snapshot" title="The “snapshot” property">snapshot</a></td> 59<td class="property_flags">Read / Write</td> 60</tr> 61</tbody> 62</table></div> 63</div> 64<a name="GstJpegEnc"></a><div class="refsect1"> 65<a name="gst-plugins-good-plugins-jpegenc.other"></a><h2>Types and Values</h2> 66<div class="informaltable"><table class="informaltable" width="100%" border="0"> 67<colgroup> 68<col width="150px" class="name"> 69<col class="description"> 70</colgroup> 71<tbody><tr> 72<td class="datatype_keyword">struct</td> 73<td class="function_name"><a class="link" href="gst-plugins-good-plugins-jpegenc.html#GstJpegEnc-struct" title="struct GstJpegEnc">GstJpegEnc</a></td> 74</tr></tbody> 75</table></div> 76</div> 77<div class="refsect1"> 78<a name="gst-plugins-good-plugins-jpegenc.object-hierarchy"></a><h2>Object Hierarchy</h2> 79<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> 80 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> 81 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a> 82 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a> 83 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gst-plugins-base-libs-1.0/GstVideoEncoder.html#GstVideoEncoder-struct">GstVideoEncoder</a> 84 <span class="lineart">╰──</span> GstJpegEnc 85</pre> 86</div> 87<div class="refsect1"> 88<a name="gst-plugins-good-plugins-jpegenc.implemented-interfaces"></a><h2>Implemented Interfaces</h2> 89<p> 90GstJpegEnc implements 91 <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstPreset.html#GstPreset-struct">GstPreset</a>.</p> 92</div> 93<div class="refsect1"> 94<a name="gst-plugins-good-plugins-jpegenc.description"></a><h2>Description</h2> 95<p>Encodes jpeg images.</p> 96<div class="refsect2"> 97<a name="id-1.2.84.8.3"></a><h3>Example launch line</h3> 98<div class="informalexample"> 99 <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> 100 <tbody> 101 <tr> 102 <td class="listing_lines" align="right"><pre>1</pre></td> 103 <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> videotestsrc num<span class="gtkdoc opt">-</span>buffers<span class="gtkdoc opt">=</span><span class="number">50</span> <span class="gtkdoc opt">!</span> video<span class="gtkdoc opt">/</span>x<span class="gtkdoc opt">-</span>raw<span class="gtkdoc opt">,</span> framerate<span class="gtkdoc opt">=</span><span class="string">'(fraction)'</span><span class="number">5</span><span class="gtkdoc opt">/</span><span class="number">1</span> <span class="gtkdoc opt">!</span> jpegenc <span class="gtkdoc opt">!</span> avimux <span class="gtkdoc opt">!</span> filesink location<span class="gtkdoc opt">=</span>mjpeg<span class="gtkdoc opt">.</span>avi</pre></td> 104 </tr> 105 </tbody> 106 </table> 107</div> 108 a pipeline to mux 5 JPEG frames per second into a 10 sec. long motion jpeg 109avi. 110</div> 111<div class="refsynopsisdiv"> 112<h2>Synopsis</h2> 113<div class="refsect2"> 114<a name="id-1.2.84.8.4.1"></a><h3>Element Information</h3> 115<div class="variablelist"><table border="0" class="variablelist"> 116<colgroup> 117<col align="left" valign="top"> 118<col> 119</colgroup> 120<tbody> 121<tr> 122<td><p><span class="term">plugin</span></p></td> 123<td> 124 <a class="link" href="gst-plugins-good-plugins-plugin-jpeg.html#plugin-jpeg">jpeg</a> 125 </td> 126</tr> 127<tr> 128<td><p><span class="term">author</span></p></td> 129<td>Wim Taymans <wim.taymans@tvd.be></td> 130</tr> 131<tr> 132<td><p><span class="term">class</span></p></td> 133<td>Codec/Encoder/Image</td> 134</tr> 135</tbody> 136</table></div> 137</div> 138<hr> 139<div class="refsect2"> 140<a name="id-1.2.84.8.4.2"></a><h3>Element Pads</h3> 141<div class="variablelist"><table border="0" class="variablelist"> 142<colgroup> 143<col align="left" valign="top"> 144<col> 145</colgroup> 146<tbody> 147<tr> 148<td><p><span class="term">name</span></p></td> 149<td>sink</td> 150</tr> 151<tr> 152<td><p><span class="term">direction</span></p></td> 153<td>sink</td> 154</tr> 155<tr> 156<td><p><span class="term">presence</span></p></td> 157<td>always</td> 158</tr> 159<tr> 160<td><p><span class="term">details</span></p></td> 161<td>video/x-raw, format=(string){ I420, YV12, YUY2, UYVY, Y41B, Y42B, YVYU, Y444, NV21, NV12, RGB, BGR, RGBx, xRGB, BGRx, xBGR, GRAY8 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td> 162</tr> 163</tbody> 164</table></div> 165<div class="variablelist"><table border="0" class="variablelist"> 166<colgroup> 167<col align="left" valign="top"> 168<col> 169</colgroup> 170<tbody> 171<tr> 172<td><p><span class="term">name</span></p></td> 173<td>src</td> 174</tr> 175<tr> 176<td><p><span class="term">direction</span></p></td> 177<td>source</td> 178</tr> 179<tr> 180<td><p><span class="term">presence</span></p></td> 181<td>always</td> 182</tr> 183<tr> 184<td><p><span class="term">details</span></p></td> 185<td>image/jpeg, width=(int)[ 16, 65535 ], height=(int)[ 16, 65535 ], framerate=(fraction)[ 0/1, 2147483647/1 ], sof-marker=(int){ 0, 1, 2, 4, 9 }</td> 186</tr> 187</tbody> 188</table></div> 189</div> 190</div> 191</div> 192<div class="refsect1"> 193<a name="gst-plugins-good-plugins-jpegenc.functions_details"></a><h2>Functions</h2> 194<p></p> 195</div> 196<div class="refsect1"> 197<a name="gst-plugins-good-plugins-jpegenc.other_details"></a><h2>Types and Values</h2> 198<div class="refsect2"> 199<a name="GstJpegEnc-struct"></a><h3>struct GstJpegEnc</h3> 200<pre class="programlisting">struct GstJpegEnc;</pre> 201</div> 202</div> 203<div class="refsect1"> 204<a name="gst-plugins-good-plugins-jpegenc.property-details"></a><h2>Property Details</h2> 205<div class="refsect2"> 206<a name="GstJpegEnc--quality"></a><h3>The <code class="literal">“quality”</code> property</h3> 207<pre class="programlisting"> “quality” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> 208<p>Quality of encoding.</p> 209<p>Flags: Read / Write</p> 210<p>Allowed values: [0,100]</p> 211<p>Default value: 85</p> 212</div> 213<hr> 214<div class="refsect2"> 215<a name="GstJpegEnc--idct-method"></a><h3>The <code class="literal">“idct-method”</code> property</h3> 216<pre class="programlisting"> “idct-method” <span class="type">GstIDCTMethod</span></pre> 217<p>The IDCT algorithm to use.</p> 218<p>Flags: Read / Write</p> 219<p>Default value: Faster, less accurate integer method</p> 220</div> 221<hr> 222<div class="refsect2"> 223<a name="GstJpegEnc--snapshot"></a><h3>The <code class="literal">“snapshot”</code> property</h3> 224<pre class="programlisting"> “snapshot” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> 225<p>Send EOS after encoding a frame, useful for snapshots.</p> 226<p>Flags: Read / Write</p> 227<p>Default value: FALSE</p> 228<p class="since">Since: 1.14</p> 229</div> 230</div> 231</div> 232<div class="footer"> 233<hr>Generated by GTK-Doc V1.28</div> 234</body> 235</html>
