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-rw-r--r--DOCS/man/vo.rst6
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diff --git a/DOCS/man/vo.rst b/DOCS/man/vo.rst
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@@ -69,6 +69,12 @@ Available video output drivers are:
``no-colorkey``
Disables color-keying.
+ ``buffers=<number>``
+ Number of image buffers to use for the internal ringbuffer (default: 2).
+ Increasing this will use more memory, but might help with the X server
+ not responding quickly enough if video FPS is close to or higher than
+ the display refresh rate.
+
``x11`` (X11 only)
Shared memory video output driver without hardware acceleration that works
whenever X11 is present.