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-rw-r--r--DOCS/man/vf.rst6
1 files changed, 6 insertions, 0 deletions
diff --git a/DOCS/man/vf.rst b/DOCS/man/vf.rst
index d25686f137..8adf396068 100644
--- a/DOCS/man/vf.rst
+++ b/DOCS/man/vf.rst
@@ -969,3 +969,9 @@ Available filters are:
Use default VDPAU scaling (default).
1-9
Apply high quality VDPAU scaling (needs capable hardware).
+
+``buffer=<num>``
+ Buffer ``<num>`` frames in the filter chain. This filter is probably pretty
+ useless, except for debugging. (Note that this won't help smoothing out
+ latencies with decoding, because the filter will never output a frame if
+ the buffer isn't full, except on EOF.)