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| <h2><span class="refentrytitle"><a name="gst-plugins-base-plugins-theoraparse.top_of_page"></a>theoraparse</span></h2> |
| <p>theoraparse</p> |
| </td> |
| <td class="gallery_image" valign="top" align="right"></td> |
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| <a name="GstTheoraParse"></a><div class="refsect1"> |
| <a name="gst-plugins-base-plugins-theoraparse.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-base-plugins-theoraparse.html#GstTheoraParse-struct" title="struct GstTheoraParse">GstTheoraParse</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-plugins-theoraparse.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> GstTheoraParse |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-plugins-theoraparse.description"></a><h2>Description</h2> |
| <p>The theoraparse element will parse the header packets of the Theora |
| stream and put them as the streamheader in the caps. This is used in the |
| multifdsink case where you want to stream live theora streams to multiple |
| clients, each client has to receive the streamheaders first before they can |
| consume the theora packets.</p> |
| <p>This element also makes sure that the buffers that it pushes out are properly |
| timestamped and that their offset and offset_end are set. The buffers that |
| theoraparse outputs have all of the metadata that oggmux expects to receive, |
| which allows you to (for example) remux an ogg/theora file.</p> |
| <p>In addition, this element allows you to fix badly synchronized streams. You |
| pass in an array of (granule time, buffer time) synchronization points via |
| the synchronization-points GValueArray property, and this element will adjust |
| the granulepos values that it outputs. The adjustment will be made by |
| offsetting all buffers that it outputs by a specified amount, and updating |
| that offset from the value array whenever a keyframe is processed.</p> |
| <div class="refsect2"> |
| <a name="id-1.2.49.6.5"></a><h3>Example pipelines</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 filesrc location<span class="gtkdoc opt">=</span>video<span class="gtkdoc opt">.</span>ogg <span class="gtkdoc opt">!</span> oggdemux <span class="gtkdoc opt">!</span> theoraparse <span class="gtkdoc opt">!</span> fakesink</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| This pipeline shows that the streamheader is set in the caps, and that each |
| buffer has the timestamp, duration, offset, and offset_end set. |
| <div class="informalexample"> |
| <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> |
| <tbody> |
| <tr> |
| <td class="listing_lines" align="right"><pre>1 |
| 2</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>video<span class="gtkdoc opt">.</span>ogg <span class="gtkdoc opt">!</span> oggdemux <span class="gtkdoc opt">!</span> theoraparse \ |
| <span class="gtkdoc opt">!</span> oggmux <span class="gtkdoc opt">!</span> filesink location<span class="gtkdoc opt">=</span>video<span class="gtkdoc opt">-</span>remuxed<span class="gtkdoc opt">.</span>ogg</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| This pipeline shows remuxing. video-remuxed.ogg might not be exactly the same |
| as video.ogg, but they should produce exactly the same decoded data. |
| </div> |
| <div class="refsynopsisdiv"> |
| <h2>Synopsis</h2> |
| <div class="refsect2"> |
| <a name="id-1.2.49.6.6.1"></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-base-plugins-plugin-theora.html#plugin-theora">theora</a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term">author</span></p></td> |
| <td>Andy Wingo <wingo@pobox.com></td> |
| </tr> |
| <tr> |
| <td><p><span class="term">class</span></p></td> |
| <td>Codec/Parser/Video</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="id-1.2.49.6.6.2"></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-theora</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-theora</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-plugins-theoraparse.functions_details"></a><h2>Functions</h2> |
| <p></p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-plugins-theoraparse.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstTheoraParse-struct"></a><h3>struct GstTheoraParse</h3> |
| <pre class="programlisting">struct GstTheoraParse;</pre> |
| <p>Opaque data structure.</p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-plugins-theoraparse.see-also"></a><h2>See Also</h2> |
| <p>theoradec, oggdemux, vorbisparse</p> |
| </div> |
| </div> |
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