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<a name="gst-plugins-good-plugins-webmmux"></a><div class="titlepage"></div>
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<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-webmmux.top_of_page"></a>webmmux</span></h2>
<p>webmmux</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<a name="GstWebMMux"></a><div class="refsect1">
<a name="gst-plugins-good-plugins-webmmux.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-webmmux.html#GstWebMMux-struct" title="struct GstWebMMux">GstWebMMux</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-webmmux.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0GstObject.html#GstObject-struct">GstObject</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0GstElement.html#GstElement-struct">GstElement</a>
<span class="lineart">╰──</span> <a class="link" href="gst-plugins-good-plugins-matroskamux.html#GstMatroskaMux">GstMatroskaMux</a>
<span class="lineart">╰──</span> GstWebMMux
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-webmmux.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
GstWebMMux implements
<a href="/usr/share/gtk-doc/html/gstreamer-1.0GstTagSetter.html#GstTagSetter-struct">GstTagSetter</a> and <a href="/usr/share/gtk-doc/html/gstreamer-1.0gstreamer-GstTocSetter.html#GstTocSetter">GstTocSetter</a>.</p>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-webmmux.description"></a><h2>Description</h2>
<p>webmmux muxes VP8 video and Vorbis audio streams into a WebM file.</p>
<div class="refsect2">
<a name="id-1.2.268.7.3"></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
2
3
4</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> webmmux name<span class="gtkdoc opt">=</span>mux <span class="gtkdoc opt">!</span> filesink location<span class="gtkdoc opt">=</span>newfile<span class="gtkdoc opt">.</span>webm \
uridecodebin uri<span class="gtkdoc opt">=</span>file<span class="gtkdoc opt">:</span><span class="gtkdoc slc">///path/to/somefile.ogv name=demux \</span>
demux<span class="gtkdoc opt">. !</span> videoconvert <span class="gtkdoc opt">!</span> vp8enc <span class="gtkdoc opt">!</span> queue <span class="gtkdoc opt">!</span> mux<span class="gtkdoc opt">.</span>video_0 \
demux<span class="gtkdoc opt">. !</span> progressreport <span class="gtkdoc opt">!</span> audioconvert <span class="gtkdoc opt">!</span> audiorate <span class="gtkdoc opt">!</span> vorbisenc <span class="gtkdoc opt">!</span> queue <span class="gtkdoc opt">!</span> mux<span class="gtkdoc opt">.</span>audio_0</pre></td>
</tr>
</tbody>
</table>
</div>
This pipeline re-encodes a video file of any format into a WebM file.
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1
2
3</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> webmmux name<span class="gtkdoc opt">=</span>mux <span class="gtkdoc opt">!</span> filesink location<span class="gtkdoc opt">=</span>test<span class="gtkdoc opt">.</span>webm \
videotestsrc num<span class="gtkdoc opt">-</span>buffers<span class="gtkdoc opt">=</span><span class="number">250</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="number">25</span><span class="gtkdoc opt">/</span><span class="number">1</span> <span class="gtkdoc opt">!</span> videoconvert <span class="gtkdoc opt">!</span> vp8enc <span class="gtkdoc opt">!</span> queue <span class="gtkdoc opt">!</span> mux<span class="gtkdoc opt">.</span>video_0 \
audiotestsrc samplesperbuffer<span class="gtkdoc opt">=</span><span class="number">44100</span> num<span class="gtkdoc opt">-</span>buffers<span class="gtkdoc opt">=</span><span class="number">10</span> <span class="gtkdoc opt">!</span> audio<span class="gtkdoc opt">/</span>x<span class="gtkdoc opt">-</span>raw<span class="gtkdoc opt">,</span>rate<span class="gtkdoc opt">=</span><span class="number">44100</span> <span class="gtkdoc opt">!</span> vorbisenc <span class="gtkdoc opt">!</span> queue <span class="gtkdoc opt">!</span> mux<span class="gtkdoc opt">.</span>audio_0</pre></td>
</tr>
</tbody>
</table>
</div>
This pipeline muxes a test video and a sine wave into a WebM file.
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.268.7.4.1"></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-matroska.html#plugin-matroska">matroska</a>
</td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>GStreamer maintainers &lt;gstreamer-devel@lists.freedesktop.org&gt;</td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Codec/Muxer</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.268.7.4.2"></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>audio_%u</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>request</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>audio/x-vorbis, channels=(int)[ 1, 2147483647 ], rate=(int)[ 1, 2147483647 ]</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-opus, channels=(int)[ 1, 2147483647 ], rate=(int)[ 1, 2147483647 ]</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>subtitle_%u</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>request</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>subtitle/x-kate</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> text/x-raw, format=(string)utf8</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> application/x-ssa</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> application/x-ass</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> application/x-usf</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> subpicture/x-dvd</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> application/x-subtitle-unknown</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>video_%u</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>request</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>video/x-vp8, width=(int)[ 16, 4096 ], height=(int)[ 16, 4096 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> video/x-vp9, width=(int)[ 16, 4096 ], height=(int)[ 16, 4096 ], 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/webm</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/webm</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-webmmux.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-webmmux.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstWebMMux-struct"></a><h3>struct GstWebMMux</h3>
<pre class="programlisting">struct GstWebMMux;</pre>
</div>
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