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| <a href="#gst-plugins-ugly-plugins-x264enc.properties" class="shortcut">Properties</a></span> |
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| <a name="gst-plugins-ugly-plugins-x264enc"></a><div class="titlepage"></div> |
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| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="gst-plugins-ugly-plugins-x264enc.top_of_page"></a>x264enc</span></h2> |
| <p>x264enc</p> |
| </td> |
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| </tr></table></div> |
| <div class="refsect1"> |
| <a name="gst-plugins-ugly-plugins-x264enc.properties"></a><h2>Properties</h2> |
| <div class="informaltable"><table class="informaltable" border="0"> |
| <colgroup> |
| <col width="150px" class="properties_type"> |
| <col width="300px" class="properties_name"> |
| <col width="200px" class="properties_flags"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="property_type"><span class="type">GstX264EncAnalyse</span></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--analyse" title="The “analyse” property">analyse</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--aud" title="The “aud” property">aud</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--b-adapt" title="The “b-adapt” property">b-adapt</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--b-pyramid" title="The “b-pyramid” property">b-pyramid</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--bframes" title="The “bframes” property">bframes</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--bitrate" title="The “bitrate” property">bitrate</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--byte-stream" title="The “byte-stream” property">byte-stream</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--cabac" title="The “cabac” property">cabac</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--dct8x8" title="The “dct8x8” property">dct8x8</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--interlaced" title="The “interlaced” property">interlaced</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--ip-factor" title="The “ip-factor” property">ip-factor</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--key-int-max" title="The “key-int-max” property">key-int-max</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><span class="type">GstX264EncMe</span></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--me" title="The “me” property">me</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"> |
| <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--multipass-cache-file" title="The “multipass-cache-file” property">multipass-cache-file</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--noise-reduction" title="The “noise-reduction” property">noise-reduction</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><span class="type">GstX264EncPass</span></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--pass" title="The “pass” property">pass</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--pb-factor" title="The “pb-factor” property">pb-factor</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--qp-max" title="The “qp-max” property">qp-max</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--qp-min" title="The “qp-min” property">qp-min</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--qp-step" title="The “qp-step” property">qp-step</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--quantizer" title="The “quantizer” property">quantizer</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--ref" title="The “ref” property">ref</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--sps-id" title="The “sps-id” property">sps-id</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"> |
| <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--stats-file" title="The “stats-file” property">stats-file</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--subme" title="The “subme” property">subme</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--threads" title="The “threads” property">threads</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--trellis" title="The “trellis” property">trellis</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--vbv-buf-capacity" title="The “vbv-buf-capacity” property">vbv-buf-capacity</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--weightb" title="The “weightb” property">weightb</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--intra-refresh" title="The “intra-refresh” property">intra-refresh</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--mb-tree" title="The “mb-tree” property">mb-tree</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--rc-lookahead" title="The “rc-lookahead” property">rc-lookahead</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--sliced-threads" title="The “sliced-threads” property">sliced-threads</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--sync-lookahead" title="The “sync-lookahead” property">sync-lookahead</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"> |
| <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--option-string" title="The “option-string” property">option-string</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><span class="type">GstX264EncProfile</span></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--profile" title="The “profile” property">profile</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><span class="type">GstX264EncPsyTune</span></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--psy-tune" title="The “psy-tune” property">psy-tune</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><span class="type">GstX264EncPreset</span></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--speed-preset" title="The “speed-preset” property">speed-preset</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><span class="type">GstX264EncTune</span></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--tune" title="The “tune” property">tune</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><span class="type">GstX264EncFramePacking</span></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--frame-packing" title="The “frame-packing” property">frame-packing</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--insert-vui" title="The “insert-vui” property">insert-vui</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <a name="GstX264Enc"></a><div class="refsect1"> |
| <a name="gst-plugins-ugly-plugins-x264enc.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-ugly-plugins-x264enc.html#GstX264Enc-struct" title="struct GstX264Enc">GstX264Enc</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-ugly-plugins-x264enc.object-hierarchy"></a><h2>Object Hierarchy</h2> |
| <pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> |
| <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> |
| <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a> |
| <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a> |
| <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gst-plugins-base-libs-1.0/gst-plugins-base-libs-GstVideoEncoder.html#GstVideoEncoder">GstVideoEncoder</a> |
| <span class="lineart">╰──</span> GstX264Enc |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-ugly-plugins-x264enc.implemented-interfaces"></a><h2>Implemented Interfaces</h2> |
| <p> |
| GstX264Enc implements |
| <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstPreset.html#GstPreset-struct">GstPreset</a>.</p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-ugly-plugins-x264enc.description"></a><h2>Description</h2> |
| <p>This element encodes raw video into H264 compressed data, |
| also otherwise known as MPEG-4 AVC (Advanced Video Codec).</p> |
| <p>The <a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--pass" title="The “pass” property"><span class="type">“pass”</span></a> property controls the type of encoding. In case of Constant |
| Bitrate Encoding (actually ABR), the <a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--bitrate" title="The “bitrate” property"><span class="type">“bitrate”</span></a> will determine the quality |
| of the encoding. This will similarly be the case if this target bitrate |
| is to obtained in multiple (2 or 3) pass encoding. |
| Alternatively, one may choose to perform Constant Quantizer or Quality encoding, |
| in which case the <a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--quantizer" title="The “quantizer” property"><span class="type">“quantizer”</span></a> property controls much of the outcome, in that case <a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--bitrate" title="The “bitrate” property"><span class="type">“bitrate”</span></a> is the maximum bitrate.</p> |
| <p>The H264 profile that is eventually used depends on a few settings. |
| If <a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--dct8x8" title="The “dct8x8” property"><span class="type">“dct8x8”</span></a> is enabled, then High profile is used. |
| Otherwise, if <a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--cabac" title="The “cabac” property"><span class="type">“cabac”</span></a> entropy coding is enabled or <a class="link" href="gst-plugins-ugly-plugins-x264enc.html#GstX264Enc--bframes" title="The “bframes” property"><span class="type">“bframes”</span></a> |
| are allowed, then Main Profile is in effect, and otherwise Baseline profile |
| applies. The high profile is imposed by default, |
| which is fine for most software players and settings, |
| but in some cases (e.g. hardware platforms) a more restricted profile/level |
| may be necessary. The recommended way to set a profile is to set it in the |
| downstream caps.</p> |
| <p>If a preset/tuning are specified then these will define the default values and |
| the property defaults will be ignored. After this the option-string property is |
| applied, followed by the user-set properties, fast first pass restrictions and |
| finally the profile restrictions.</p> |
| <div class="note">Some settings, including the default settings, may lead to quite |
| some latency (i.e. frame buffering) in the encoder. This may cause problems |
| with pipeline stalling in non-trivial pipelines, because the encoder latency |
| is often considerably higher than the default size of a simple queue |
| element. Such problems are caused by one of the queues in the other |
| non-x264enc streams/branches filling up and blocking upstream. They can |
| be fixed by relaxing the default time/size/buffer limits on the queue |
| elements in the non-x264 branches, or using a (single) multiqueue element |
| for all branches. Also see the last example below. You can also work around |
| this problem by setting the tune=zerolatency property, but this will affect |
| overall encoding quality so may not be appropriate for your use case. |
| </div> |
| <div class="refsect2"> |
| <a name="id-1.2.13.8.7"></a><h3>Example pipeline</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</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 videotestsrc num<span class="gtkdoc opt">-</span>buffers<span class="gtkdoc opt">=</span><span class="number">1000</span> <span class="gtkdoc opt">!</span> x264enc qp<span class="gtkdoc opt">-</span>min<span class="gtkdoc opt">=</span><span class="number">18</span> <span class="gtkdoc opt">!</span> \ |
| avimux <span class="gtkdoc opt">!</span> filesink location<span class="gtkdoc opt">=</span>videotestsrc<span class="gtkdoc opt">.</span>avi</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| This example pipeline will encode a test video source to H264 muxed in an |
| AVI container, while ensuring a sane minimum quantization factor to avoid |
| some (excessive) waste. You should ideally never put H264 into an AVI |
| container (or really anything else, for that matter) - use Matroska or |
| MP4/QuickTime or MPEG-TS instead. |
| <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> <span class="gtkdoc opt">-</span>v videotestsrc num<span class="gtkdoc opt">-</span>buffers<span class="gtkdoc opt">=</span><span class="number">1000</span> <span class="gtkdoc opt">!</span> x264enc pass<span class="gtkdoc opt">=</span>quant <span class="gtkdoc opt">!</span> \ |
| matroskamux <span class="gtkdoc opt">!</span> filesink location<span class="gtkdoc opt">=</span>videotestsrc<span class="gtkdoc opt">.</span>mkv</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| This example pipeline will encode a test video source to H264 using fixed |
| quantization, and muxes it in a Matroska container. |
| <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> <span class="gtkdoc opt">-</span>v videotestsrc num<span class="gtkdoc opt">-</span>buffers<span class="gtkdoc opt">=</span><span class="number">1000</span> <span class="gtkdoc opt">!</span> x264enc pass<span class="gtkdoc opt">=</span><span class="number">5</span> quantizer<span class="gtkdoc opt">=</span><span class="number">25</span> speed<span class="gtkdoc opt">-</span>preset<span class="gtkdoc opt">=</span><span class="number">6</span> <span class="gtkdoc opt">!</span> video<span class="gtkdoc opt">/</span>x<span class="gtkdoc opt">-</span>h264<span class="gtkdoc opt">,</span> profile<span class="gtkdoc opt">=</span>baseline <span class="gtkdoc opt">!</span> \ |
| qtmux <span class="gtkdoc opt">!</span> filesink location<span class="gtkdoc opt">=</span>videotestsrc<span class="gtkdoc opt">.</span>mov</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| This example pipeline will encode a test video source to H264 using |
| constant quality at around Q25 using the 'medium' speed/quality preset and |
| restricting the options used so that the output is H.264 Baseline Profile |
| compliant and finally multiplexing the output in Quicktime mov format. |
| <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> <span class="gtkdoc opt">-</span>v videotestsrc num<span class="gtkdoc opt">-</span>buffers<span class="gtkdoc opt">=</span><span class="number">1000</span> <span class="gtkdoc opt">!</span> tee name<span class="gtkdoc opt">=</span>t <span class="gtkdoc opt">!</span> queue <span class="gtkdoc opt">!</span> videoconvert <span class="gtkdoc opt">!</span> autovideosink \ |
| t<span class="gtkdoc opt">. !</span> queue <span class="gtkdoc opt">!</span> x264enc rc<span class="gtkdoc opt">-</span>lookahead<span class="gtkdoc opt">=</span><span class="number">5</span> <span class="gtkdoc opt">!</span> fakesink</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| This example pipeline will encode a test video source to H264 while |
| displaying the input material at the same time. As mentioned above, |
| specific settings are needed in this case to avoid pipeline stalling. |
| Depending on goals and context, other approaches are possible, e.g. |
| tune=zerolatency might be configured, or queue sizes increased. |
| </div> |
| <div class="refsynopsisdiv"> |
| <h2>Synopsis</h2> |
| <div class="refsect2"> |
| <a name="id-1.2.13.8.8.1"></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-ugly-plugins-plugin-x264.html#plugin-x264">x264</a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term">author</span></p></td> |
| <td>Josef Zlomek <josef.zlomek@itonis.tv>, Mark Nauwelaerts <mnauw@users.sf.net></td> |
| </tr> |
| <tr> |
| <td><p><span class="term">class</span></p></td> |
| <td>Codec/Encoder/Video</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="id-1.2.13.8.8.2"></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-raw, framerate=(fraction)[ 0/1, 2147483647/1 ], width=(int)[ 16, 2147483647 ], height=(int)[ 16, 2147483647 ], format=(string){ Y444, Y42B, I420, YV12, NV12 }</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-h264, framerate=(fraction)[ 0/1, 2147483647/1 ], width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], stream-format=(string){ avc, byte-stream }, alignment=(string)au, profile=(string){ high-4:4:4, high-4:2:2, high-10, high, main, baseline, constrained-baseline, high-4:4:4-intra, high-4:2:2-intra, high-10-intra }</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-ugly-plugins-x264enc.functions_details"></a><h2>Functions</h2> |
| <p></p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-ugly-plugins-x264enc.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstX264Enc-struct"></a><h3>struct GstX264Enc</h3> |
| <pre class="programlisting">struct GstX264Enc;</pre> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-ugly-plugins-x264enc.property-details"></a><h2>Property Details</h2> |
| <div class="refsect2"> |
| <a name="GstX264Enc--analyse"></a><h3>The <code class="literal">“analyse”</code> property</h3> |
| <pre class="programlisting"> “analyse” <span class="type">GstX264EncAnalyse</span></pre> |
| <p>Partitions to consider.</p> |
| <p>Flags: Read / Write</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--aud"></a><h3>The <code class="literal">“aud”</code> property</h3> |
| <pre class="programlisting"> “aud” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Use AU (Access Unit) delimiter.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: TRUE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--b-adapt"></a><h3>The <code class="literal">“b-adapt”</code> property</h3> |
| <pre class="programlisting"> “b-adapt” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Automatically decide how many B-frames to use.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: TRUE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--b-pyramid"></a><h3>The <code class="literal">“b-pyramid”</code> property</h3> |
| <pre class="programlisting"> “b-pyramid” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Keep some B-frames as references.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: FALSE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--bframes"></a><h3>The <code class="literal">“bframes”</code> property</h3> |
| <pre class="programlisting"> “bframes” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Number of B-frames between I and P.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: <= 16</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--bitrate"></a><h3>The <code class="literal">“bitrate”</code> property</h3> |
| <pre class="programlisting"> “bitrate” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Bitrate in kbit/sec.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: [1,2048000]</p> |
| <p>Default value: 2048</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--byte-stream"></a><h3>The <code class="literal">“byte-stream”</code> property</h3> |
| <pre class="programlisting"> “byte-stream” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Generate byte stream format of NALU.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: FALSE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--cabac"></a><h3>The <code class="literal">“cabac”</code> property</h3> |
| <pre class="programlisting"> “cabac” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Enable CABAC entropy coding.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: TRUE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--dct8x8"></a><h3>The <code class="literal">“dct8x8”</code> property</h3> |
| <pre class="programlisting"> “dct8x8” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Adaptive spatial transform size.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: FALSE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--interlaced"></a><h3>The <code class="literal">“interlaced”</code> property</h3> |
| <pre class="programlisting"> “interlaced” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Interlaced material.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: FALSE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--ip-factor"></a><h3>The <code class="literal">“ip-factor”</code> property</h3> |
| <pre class="programlisting"> “ip-factor” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a></pre> |
| <p>Quantizer factor between I- and P-frames.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: [0,2]</p> |
| <p>Default value: 1.4</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--key-int-max"></a><h3>The <code class="literal">“key-int-max”</code> property</h3> |
| <pre class="programlisting"> “key-int-max” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Maximal distance between two key-frames (0 for automatic).</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: <= G_MAXINT</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--me"></a><h3>The <code class="literal">“me”</code> property</h3> |
| <pre class="programlisting"> “me” <span class="type">GstX264EncMe</span></pre> |
| <p>Integer pixel motion estimation method.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: hex</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--multipass-cache-file"></a><h3>The <code class="literal">“multipass-cache-file”</code> property</h3> |
| <pre class="programlisting"> “multipass-cache-file” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre> |
| <p>Filename for multipass cache file.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: "x264.log"</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--noise-reduction"></a><h3>The <code class="literal">“noise-reduction”</code> property</h3> |
| <pre class="programlisting"> “noise-reduction” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Noise reduction strength.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: <= 100000</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--pass"></a><h3>The <code class="literal">“pass”</code> property</h3> |
| <pre class="programlisting"> “pass” <span class="type">GstX264EncPass</span></pre> |
| <p>Encoding pass/type.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: Constant Bitrate Encoding</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--pb-factor"></a><h3>The <code class="literal">“pb-factor”</code> property</h3> |
| <pre class="programlisting"> “pb-factor” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a></pre> |
| <p>Quantizer factor between P- and B-frames.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: [0,2]</p> |
| <p>Default value: 1.3</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--qp-max"></a><h3>The <code class="literal">“qp-max”</code> property</h3> |
| <pre class="programlisting"> “qp-max” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Maximum quantizer.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: <= 51</p> |
| <p>Default value: 51</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--qp-min"></a><h3>The <code class="literal">“qp-min”</code> property</h3> |
| <pre class="programlisting"> “qp-min” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Minimum quantizer.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: <= 51</p> |
| <p>Default value: 10</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--qp-step"></a><h3>The <code class="literal">“qp-step”</code> property</h3> |
| <pre class="programlisting"> “qp-step” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Maximum quantizer difference between frames.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: <= 50</p> |
| <p>Default value: 4</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--quantizer"></a><h3>The <code class="literal">“quantizer”</code> property</h3> |
| <pre class="programlisting"> “quantizer” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Constant quantizer or quality to apply.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: <= 50</p> |
| <p>Default value: 21</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--ref"></a><h3>The <code class="literal">“ref”</code> property</h3> |
| <pre class="programlisting"> “ref” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Number of reference frames.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: [1,12]</p> |
| <p>Default value: 1</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--sps-id"></a><h3>The <code class="literal">“sps-id”</code> property</h3> |
| <pre class="programlisting"> “sps-id” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>SPS and PPS ID number.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: <= 31</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--stats-file"></a><h3>The <code class="literal">“stats-file”</code> property</h3> |
| <pre class="programlisting"> “stats-file” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre> |
| <p>Filename for multipass statistics (deprecated, use multipass-cache-file).</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: "x264.log"</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--subme"></a><h3>The <code class="literal">“subme”</code> property</h3> |
| <pre class="programlisting"> “subme” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Subpixel motion estimation and partition decision quality: 1=fast, 10=best.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: [1,10]</p> |
| <p>Default value: 1</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--threads"></a><h3>The <code class="literal">“threads”</code> property</h3> |
| <pre class="programlisting"> “threads” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Number of threads used by the codec (0 for automatic).</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: <= G_MAXINT</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--trellis"></a><h3>The <code class="literal">“trellis”</code> property</h3> |
| <pre class="programlisting"> “trellis” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Enable trellis searched quantization.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: TRUE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--vbv-buf-capacity"></a><h3>The <code class="literal">“vbv-buf-capacity”</code> property</h3> |
| <pre class="programlisting"> “vbv-buf-capacity” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Size of the VBV buffer in milliseconds.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: <= 10000</p> |
| <p>Default value: 600</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--weightb"></a><h3>The <code class="literal">“weightb”</code> property</h3> |
| <pre class="programlisting"> “weightb” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Weighted prediction for B-frames.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: FALSE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--intra-refresh"></a><h3>The <code class="literal">“intra-refresh”</code> property</h3> |
| <pre class="programlisting"> “intra-refresh” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Use Periodic Intra Refresh instead of IDR frames.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: FALSE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--mb-tree"></a><h3>The <code class="literal">“mb-tree”</code> property</h3> |
| <pre class="programlisting"> “mb-tree” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Macroblock-Tree ratecontrol.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: TRUE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--rc-lookahead"></a><h3>The <code class="literal">“rc-lookahead”</code> property</h3> |
| <pre class="programlisting"> “rc-lookahead” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> |
| <p>Number of frames for frametype lookahead.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: [0,250]</p> |
| <p>Default value: 40</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--sliced-threads"></a><h3>The <code class="literal">“sliced-threads”</code> property</h3> |
| <pre class="programlisting"> “sliced-threads” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Low latency but lower efficiency threading.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: FALSE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--sync-lookahead"></a><h3>The <code class="literal">“sync-lookahead”</code> property</h3> |
| <pre class="programlisting"> “sync-lookahead” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> |
| <p>Number of buffer frames for threaded lookahead (-1 for automatic).</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: [G_MAXULONG,250]</p> |
| <p>Default value: -1</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--option-string"></a><h3>The <code class="literal">“option-string”</code> property</h3> |
| <pre class="programlisting"> “option-string” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre> |
| <p>String of x264 options (overridden by element properties) in the format "key1=value1:key2=value2".</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: ""</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--profile"></a><h3>The <code class="literal">“profile”</code> property</h3> |
| <pre class="programlisting"> “profile” <span class="type">GstX264EncProfile</span></pre> |
| <p>Apply restrictions to meet H.264 Profile constraints. This will override other properties if necessary. This will only be used if downstream elements do not specify a profile in their caps (DEPRECATED).</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: main</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--psy-tune"></a><h3>The <code class="literal">“psy-tune”</code> property</h3> |
| <pre class="programlisting"> “psy-tune” <span class="type">GstX264EncPsyTune</span></pre> |
| <p>Preset name for psychovisual tuning options.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: No tuning</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--speed-preset"></a><h3>The <code class="literal">“speed-preset”</code> property</h3> |
| <pre class="programlisting"> “speed-preset” <span class="type">GstX264EncPreset</span></pre> |
| <p>Preset name for speed/quality tradeoff options (can affect decode compatibility - impose restrictions separately for your target decoder).</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: medium</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--tune"></a><h3>The <code class="literal">“tune”</code> property</h3> |
| <pre class="programlisting"> “tune” <span class="type">GstX264EncTune</span></pre> |
| <p>Preset name for non-psychovisual tuning options.</p> |
| <p>Flags: Read / Write</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--frame-packing"></a><h3>The <code class="literal">“frame-packing”</code> property</h3> |
| <pre class="programlisting"> “frame-packing” <span class="type">GstX264EncFramePacking</span></pre> |
| <p>Set frame packing mode for Stereoscopic content.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: Automatic (use incoming video information)</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstX264Enc--insert-vui"></a><h3>The <code class="literal">“insert-vui”</code> property</h3> |
| <pre class="programlisting"> “insert-vui” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Insert VUI NAL in stream.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: TRUE</p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-ugly-plugins-x264enc.see-also"></a><h2>See Also</h2> |
| <p>faac</p> |
| </div> |
| </div> |
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