diff --git a/README.md b/README.md
index 13cb27cd..243f3aad 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,14 @@
 # GtkPlayer
 A pre-made GJS Media Player widget powered by GStreamer with OpenGL rendering.
+
+Required GStreamer elements:
+*  [gtkglsink](https://gstreamer.freedesktop.org/documentation/gtk/gtkglsink.html)
+*  [glsinkbin](https://gstreamer.freedesktop.org/documentation/opengl/glsinkbin.html)
+
+Other required plugins (codecs) depend on video format.
+
+To use VAAPI make sure you have `gstreamer1-vaapi` installed. Verify with:
+```shell
+gst-inspect-1.0 vaapi
+```
+On some older GPUs you might need to export `GST_VAAPI_ALL_DRIVERS=1` environment variable.