mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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docs: Improve docs some more
This commit is contained in:
Edward Hervey
parent
5f187a5349
commit
74c377d1fa
5 changed files with 362 additions and 85 deletions
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@ -102,6 +102,7 @@ AC_PATH_PROG(VALGRIND_PATH, valgrind, no)
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AM_CONDITIONAL(HAVE_VALGRIND, test ! "x$VALGRIND_PATH" = "xno")
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dnl check for documentation tools
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AG_GST_DOCBOOK_CHECK
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GTK_DOC_CHECK([1.3])
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AS_PATH_PYTHON([2.1])
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AG_GST_PLUGIN_DOCS([1.3],[2.1])
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@ -8,7 +8,7 @@ DOC_MODULE=$(MODULE)
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# for upload-doc.mak
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DOC=$(MODULE)
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FORMATS=html
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FORMATS=html ps pdf
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html: html-build.stamp
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include $(top_srcdir)/common/upload-doc.mak
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@ -85,7 +85,7 @@ EXTRA_HFILES = \
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HTML_IMAGES =
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# Extra SGML files that are included by $(DOC_MAIN_SGML_FILE).
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content_files = architecture.xml
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content_files = architecture.xml layer_track_overview.png
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# Other files to distribute.
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extra_files =
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@ -1,59 +1,56 @@
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<?xml version="1.0"?>
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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<!ENTITY % version-entities SYSTEM "version.entities">
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%version-entities;
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<!ENTITY % local.common.attrib "xmlns:xi CDATA #FIXED 'http://www.w3.org/2003/XInclude'">
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]>
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"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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<!ENTITY % local.common.attrib "xmlns:xi CDATA #FIXED 'http://www.w3.org/2003/XInclude'">
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]>
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<refentry id="ges-architecture" revision="25 mar 2009">
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<refmeta>
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<refentrytitle>Overview and architecture</refentrytitle>
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<manvolnum>1</manvolnum>
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<refmiscinfo>GStreamer Editing Services</refmiscinfo>
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</refmeta>
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<!-- <refnamediv> -->
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<!-- <refname>Overview</refname> -->
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<!-- <refpurpose> -->
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<!-- Goals of the GStreamer Editing Services. -->
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<!-- </refpurpose> -->
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<!-- </refnamediv> -->
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<refsect1>
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<title>Goals of GStreamer Editing Services</title>
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<para>
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The GStreamer multimedia framework and the accompanying GNonLin set
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of plugins for non-linear editing offer all the building blocks for:
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<itemizedlist>
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<listitem>
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Decoding and encoding to a wide variety of formats, through
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all the available GStreamer plugins.
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</listitem>
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<listitem>
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Easily choosing segments of streams and arranging them through
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time through the GNonLin set of plugins.
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</listitem>
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</itemizedlist>
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</para>
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<para>
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But all those building blocks only offer stream-level access,
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which results in developers who want to write non-linear editors
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to write a consequent amount of code to get to the level of
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<emphasis>non-linear editing</emphasis> notions which are closer
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and more meaningful for the end-user (and therefore the
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application).
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</para>
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<para>The GStreamer multimedia framework and the accompanying GNonLin set
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of plugins for non-linear editing offer all the building blocks for:
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<itemizedlist>
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<listitem>
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<para>Decoding and encoding to a wide variety of formats, through
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all the available GStreamer plugins.</para>
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</listitem>
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<para>
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The GStreamer Editing Services <remark>(hereafter GES)</remark>
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aims to fill the gap between GStreamer/GNonLin and the
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application developer by offering a series of classes to
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simplify the creation of many kind of editing-related
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applications.
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</para>
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<listitem>
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<para>Easily choosing segments of streams and arranging them through
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time through the GNonLin set of plugins.</para>
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</listitem>
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</itemizedlist></para>
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<para>But all those building blocks only offer stream-level access, which
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results in developers who want to write non-linear editors to write a
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consequent amount of code to get to the level of <emphasis>non-linear
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editing</emphasis> notions which are closer and more meaningful for the
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end-user (and therefore the application).</para>
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<para>The GStreamer Editing Services <remark>(hereafter GES)</remark> aims
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to fill the gap between GStreamer/GNonLin and the application developer by
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offering a series of classes to simplify the creation of many kind of
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editing-related applications.</para>
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</refsect1>
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<refsect1>
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@ -62,67 +59,57 @@
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<refsect2>
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<title>Timeline and TimelinePipeline</title>
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<para>
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The most top-level object encapsulating every other object is
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the <link linkend="GESTimeline">GESTimeline</link>. It is the
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central object for any editing project.
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</para>
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<para>The most top-level object encapsulating every other object is the
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<link linkend="GESTimeline">GESTimeline</link>. It is the central object
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for any editing project.</para>
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<para>
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The <classname>GESTimeline</classname> is
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a <classname>GstElement</classname>. It can therefore be used in
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any GStreamer pipeline like any other object.
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</para>
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<para>The <classname>GESTimeline</classname> is a
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<classname>GstElement</classname>. It can therefore be used in any
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GStreamer pipeline like any other object.</para>
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<para>
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The GESTimeline can contain two types of objects:
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<itemizedlist>
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<listitem>
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<emphasis>Layers</emphasis> - Corresponds to the user-visible
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layout of non-overlapping objects. A minimalistic would
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only have one layer. A more complex editing application
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could use as many as needed.
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</listitem>
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<listitem>
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<emphasis>Tracks</emphasis> - Corresponds to the output
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stream formats. A typical GESTimeline would have a audio
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track and a video track. A audio editor would only require
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one single audio Track.
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</listitem>
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</itemizedlist>
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</para>
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<para>The GESTimeline can contain two types of objects (seen in <xref
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linkend="layer_tracks_diagram" />): <itemizedlist>
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<listitem>
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<para>Layers - Corresponds to the user-visible layout of
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non-overlapping objects. A minimalistic timeline would only have
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one layer. A more complex editing application could use as many as
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needed.</para>
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</listitem>
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<para>
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FIXME : INSERT DIAGRAM
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</para>
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<listitem>
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<para>Tracks - Corresponds to the output stream formats. A typical
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GESTimeline would have a audio track and a video track. An audio
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editor would only require one single audio Track.</para>
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</listitem>
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</itemizedlist></para>
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<para>
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In order to reduce even more the amount of GStreamer
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interaction the application developer has to deal with , a
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convenience GstPipeline has been made available specifically
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for Timelines
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: <link linkend="GESTimelinePipeline">GESTimelinePipeline</link>.
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</para>
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<figure float="0" id="layer_tracks_diagram">
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<title>Layers and Tracks</title>
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<mediaobject>
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<imageobject>
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<imagedata fileref="layer_track_overview.png" scale="75" />
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</imageobject>
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</mediaobject>
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</figure>
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<para>In order to reduce even more the amount of GStreamer interaction
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the application developer has to deal with , a convenience GstPipeline
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has been made available specifically for Timelines : <link
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linkend="GESTimelinePipeline">GESTimelinePipeline</link>.</para>
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</refsect2>
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<refsect2>
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<title>Timeline layers</title>
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<para>
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The layers are the end-user visible part of GES.
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</para>
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<para>The layers are the end-user visible part of GES.</para>
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</refsect2>
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<refsect2>
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<title>Timeline Tracks</title>
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<para>
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The tracks are the GStreamer-level components of a
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Timeline. They are a 1-to-1 relationship to the output
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streams.
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</para>
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<para>The tracks are the GStreamer-level components of a Timeline. They
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are a 1-to-1 relationship to the output streams.</para>
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</refsect2>
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</refsect1>
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</refentry>
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After Width: | Height: | Size: 12 KiB |
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Reference in a new issue