···11+diff --git i/Source/cmake/OptionsGTK.cmake w/Source/cmake/OptionsGTK.cmake
22+index d3577a8..9620dc0 100644
33+--- i/Source/cmake/OptionsGTK.cmake
44++++ w/Source/cmake/OptionsGTK.cmake
55+@@ -94,7 +94,7 @@ WEBKIT_OPTION_DEFINE(USE_LIBSECRET "Whether to enable the persistent credential
66+77+ # Private options specific to the GTK+ port. Changing these options is
88+ # completely unsupported. They are intended for use only by WebKit developers.
99+-WEBKIT_OPTION_DEFINE(USE_GSTREAMER_GL "Whether to enable support for GStreamer GL" PRIVATE ON)
1010++WEBKIT_OPTION_DEFINE(USE_GSTREAMER_GL "Whether to enable support for GStreamer GL" PRIVATE OFF)
1111+ WEBKIT_OPTION_DEFINE(USE_GSTREAMER_MPEGTS "Whether to enable support for MPEG-TS" PRIVATE OFF)
1212+ WEBKIT_OPTION_DEFINE(USE_REDIRECTED_XCOMPOSITE_WINDOW "Whether to use a Redirected XComposite Window for accelerated compositing in X11." PRIVATE ON)
1313+