diff --git a/README.html b/README.html
index 5734fce..50f2f5c 100644
--- a/README.html
+++ b/README.html
@@ -382,8 +382,10 @@ decoding)</li>
 <li>“<strong>plugins-bad</strong>” (for h264 decoding).</li>
 </ol>
 <p>Plugins that may also be needed include “<strong>gl</strong>” for
-OpenGL support (which may be useful, and should be used with h264
-decoding by the NVIDIA GPU), and “<strong>x</strong>” for X11 support,
+OpenGL support (this provides the “-vs glimagesink” videosink, which can
+be very useful in many systems, and should always be used when using
+h264 decoding by a NVIDIA GPU), “<strong>gtk3</strong>” (which provides
+the “-vs gtksink” videosink), and “<strong>x</strong>” for X11 support,
 although these may already be installed; “<strong>vaapi</strong>” is
 needed for hardware-accelerated h264 video decoding by Intel or AMD
 graphics (but not for use with NVIDIA using proprietary drivers). If
diff --git a/README.md b/README.md
index 0b08ea0..a12b6cf 100644
--- a/README.md
+++ b/README.md
@@ -311,8 +311,9 @@ Values of `<plugin>` required are:
 3. "**plugins-good**" (for v4l2 hardware h264 decoding)
 4. "**plugins-bad**" (for h264 decoding).   
 
-Plugins that may also be needed include "**gl**" for OpenGL support (which may be useful, and should
-be used with h264 decoding by the NVIDIA GPU), and "**x**" for
+Plugins that may also be needed include "**gl**" for OpenGL support (this provides the "-vs glimagesink" videosink, which
+can be very useful in many systems, and should always be used when using h264 decoding by a NVIDIA GPU),  "**gtk3**" (which
+provides the "-vs gtksink" videosink), and "**x**" for
 X11 support, although these may  already be installed; "**vaapi**"
 is needed for hardware-accelerated h264 video decoding by Intel
 or AMD  graphics (but not for use with NVIDIA using proprietary drivers). If sound is 
diff --git a/README.txt b/README.txt
index 3d4e7df..b619edb 100644
--- a/README.txt
+++ b/README.txt
@@ -378,13 +378,15 @@ are:
 4.  "**plugins-bad**" (for h264 decoding).
 
 Plugins that may also be needed include "**gl**" for OpenGL support
-(which may be useful, and should be used with h264 decoding by the
-NVIDIA GPU), and "**x**" for X11 support, although these may already be
-installed; "**vaapi**" is needed for hardware-accelerated h264 video
-decoding by Intel or AMD graphics (but not for use with NVIDIA using
-proprietary drivers). If sound is not working,
-"**alsa**"","**pulseaudio**", or "**pipewire**" plugins may need to be
-installed, depending on how your audio is set up.
+(this provides the "-vs glimagesink" videosink, which can be very useful
+in many systems, and should always be used when using h264 decoding by a
+NVIDIA GPU), "**gtk3**" (which provides the "-vs gtksink" videosink),
+and "**x**" for X11 support, although these may already be installed;
+"**vaapi**" is needed for hardware-accelerated h264 video decoding by
+Intel or AMD graphics (but not for use with NVIDIA using proprietary
+drivers). If sound is not working, "**alsa**"","**pulseaudio**", or
+"**pipewire**" plugins may need to be installed, depending on how your
+audio is set up.
 
 -   Also install "**gstreamer1.0-tools**" to get the utility
     gst-inspect-1.0 for examining the GStreamer installation.