to the end user, allowing them to change audio filter properties
and configurations manually.
-@item show_crossbar_connection_dialog
+@item show_video_crossbar_connection_dialog
If set to @option{true}, before capture starts, popup a display
dialog to the end user, allowing them to manually
-modify crossbar pin routings.
+modify crossbar pin routings, when it opens a video device.
+
+@item show_audio_crossbar_connection_dialog
+If set to @option{true}, before capture starts, popup a display
+dialog to the end user, allowing them to manually
+modify crossbar pin routings, when it opens an audio device.
@item show_analog_tv_tuner_dialog
If set to @option{true}, before capture starts, popup a display
X11 video input device.
-Depends on X11, Xext, and Xfixes. Requires the configure option
-@code{--enable-x11grab}.
+To enable this input device during configuration you need libxcb
+installed on your system. It will be automatically detected during
+configuration.
+
+Alternatively, the configure option @option{--enable-x11grab} exists
+for legacy Xlib users.
This device allows one to capture a region of an X11 display.
area with respect to the top-left border of the X11 screen. They
default to 0.
-Check the X11 documentation (e.g. man X) for more detailed information.
+Check the X11 documentation (e.g. @command{man X}) for more detailed
+information.
-Use the @command{dpyinfo} program for getting basic information about the
-properties of your X11 display (e.g. grep for "name" or "dimensions").
+Use the @command{xdpyinfo} program for getting basic information about
+the properties of your X11 display (e.g. grep for "name" or
+"dimensions").
For example to grab from @file{:0.0} using @command{ffmpeg}:
@example
region will be indicated on screen. With this option, it is easy to
know what is being grabbed if only a portion of the screen is grabbed.
+@item region_border
+Set the region border thickness if @option{-show_region 1} is used.
+Range is 1 to 128 and default is 3 (XCB-based x11grab only).
+
For example:
@example
ffmpeg -f x11grab -show_region 1 -framerate 25 -video_size cif -i :0.0+10,20 out.mpg
@item use_shm
Use the MIT-SHM extension for shared memory. Default value is @code{1}.
-It may be necessary to disable it for remote displays.
+It may be necessary to disable it for remote displays (legacy x11grab
+only).
@end table
@section decklink