directory according to the xdg base dir specification. Usually this will be
a directory called
<filename>plugins</filename> inside the
-<filename>.local/share/.gstreamer-&GST_API_VERSION;</filename> directory in
+<filename>.local/share/gstreamer-&GST_API_VERSION;</filename> directory in
the user's home directory by default, though this search path may change if
the XDG_DATA_HOME environment variable is set.
</para>
</formalpara>
+<formalpara id="GST_TAG_ENCODING">
+ <title><envar>GST_TAG_ENCODING</envar></title>
+ <para>
+Try this character encoding first for tag-related strings where the encoding
+is not defined and which are not UTF-8 already. By default the current locale
+will be tried (if not UTF-8).
+ </para>
+</formalpara>
+
+<formalpara id="GST_TAG_ID3_ENCODING">
+ <title><envar>GST_TAG_ID3_ENCODING</envar></title>
+ <para>
+Try this character encoding first for ID3 tag-related strings where the
+encoding is not defined and which are not UTF-8 already. By default the current
+locale will be tried (if not UTF-8).
+ </para>
+</formalpara>
+
+<formalpara id="GST_TAG_ID3V1_ENCODING">
+ <title><envar>GST_TAG_ID3V1_ENCODING</envar></title>
+ <para>
+Try this character encoding first for ID3v1 tag-related strings where the
+encoding does not look like UTF-8.
+ </para>
+</formalpara>
+
+<formalpara id="GST_GL_WINDOW">
+ <title><envar>GST_GL_WINDOW</envar></title>
+ <para>
+Influences the window system to use by the GStreamer OpenGL library.
+Common values are 'x11', 'wayland', 'win32' or 'cocoa'.
+ </para>
+</formalpara>
+
+<formalpara id="GST_GL_PLATFORM">
+ <title><envar>GST_GL_PLATFORM</envar></title>
+ <para>
+Influences the OpenGL platform to use by the GStreamer OpenGL library.
+Common values are 'egl', 'glx', 'wgl' or 'cgl'.
+ </para>
+</formalpara>
+
+<formalpara id="GST_GL_API">
+ <title><envar>GST_GL_API</envar></title>
+ <para>
+Influences the OpenGL API requested by the OpenGL platform.
+Common values are 'opengl' or 'gles2'.
+ </para>
+</formalpara>
+
</refsect2>
</refsect1>