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<h2><span class="refentrytitle"><a name="gst-plugins-bad-plugins-ttmlparse.top_of_page"></a>ttmlparse</span></h2>
<p>ttmlparse</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<a name="GstTtmlParse"></a><div class="refsect1">
<a name="gst-plugins-bad-plugins-ttmlparse.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-bad-plugins-ttmlparse.html#GstTtmlParse-struct" title="struct GstTtmlParse">GstTtmlParse</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-ttmlparse.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="../gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
<span class="lineart">╰──</span> <a href="../gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
<span class="lineart">╰──</span> <a href="../gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a>
<span class="lineart">╰──</span> <a href="../gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a>
<span class="lineart">╰──</span> GstTtmlParse
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-ttmlparse.description"></a><h2>Description</h2>
<p>Parses timed text subtitle files described using Timed Text Markup Language
(TTML). Currently, only the EBU-TT-D profile of TTML, designed for
distribution of subtitles over IP, is supported.</p>
<p>The parser outputs a <a href="../gstreamer-1.0/GstBuffer.html#GstBuffer-struct"><span class="type">GstBuffer</span></a> for each scene in the input TTML file, a
scene being a period of time during which a static set of subtitles should
be visible. The parser places each text element within a scene into its own
<a href="../gstreamer-1.0/GstMemory.html#GstMemory-struct"><span class="type">GstMemory</span></a> within the scene's buffer, and attaches metadata to the buffer
describing the styling and layout associated with all the contained text
elements. A downstream renderer element uses this information to correctly
render the text on top of video frames.</p>
<div class="refsect3">
<a name="id-1.2.230.6.4"></a><h4>Example launch lines</h4>
<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> filesrc location<span class="gtkdoc opt">=<</span>media file location<span class="gtkdoc opt">> !</span> video<span class="gtkdoc opt">/</span>quicktime <span class="gtkdoc opt">!</span> qtdemux name<span class="gtkdoc opt">=</span>q ttmlrender name<span class="gtkdoc opt">=</span>r q<span class="gtkdoc opt">. !</span> queue <span class="gtkdoc opt">!</span> h264parse <span class="gtkdoc opt">!</span> avdec_h264 <span class="gtkdoc opt">!</span> autovideoconvert <span class="gtkdoc opt">!</span> r<span class="gtkdoc opt">.</span>video_sink filesrc location<span class="gtkdoc opt">=<</span>subtitle file location<span class="gtkdoc opt">></span> blocksize<span class="gtkdoc opt">=</span><span class="number">16777216</span> <span class="gtkdoc opt">!</span> queue <span class="gtkdoc opt">!</span> ttmlparse <span class="gtkdoc opt">!</span> r<span class="gtkdoc opt">.</span>text_sink r<span class="gtkdoc opt">. !</span> ximagesink q<span class="gtkdoc opt">. !</span> queue <span class="gtkdoc opt">!</span> aacparse <span class="gtkdoc opt">!</span> avdec_aac <span class="gtkdoc opt">!</span> audioconvert <span class="gtkdoc opt">!</span> alsasink</pre></td>
</tr>
</tbody>
</table>
</div>
<p> Parse and render TTML subtitles contained in a single XML file over an
MP4 stream containing H.264 video and AAC audio.</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.230.6.5.1"></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-bad-plugins-plugin-ttmlsubs.html#plugin-ttmlsubs">ttmlsubs</a>
</td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>GStreamer maintainers <gstreamer-devel@lists.sourceforge.net>, Chris Bass <dash@rd.bbc.co.uk></td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Codec/Parser/Subtitle</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.230.6.5.2"></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>application/ttml+xml</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>text/x-raw(meta:GstSubtitleMeta)</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-ttmlparse.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-ttmlparse.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstTtmlParse-struct"></a><h3>struct GstTtmlParse</h3>
<pre class="programlisting">struct GstTtmlParse;</pre>
</div>
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