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-rw-r--r--doc/encoders.texi9
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/encoders.texi b/doc/encoders.texi
index e23b6b32fe..18bfe8f2eb 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -1508,6 +1508,15 @@ Complexity-based.
Cyclic refresh.
@end table
+@item tune (@emph{tune})
+Set the distortion metric the encoder is tuned with. Default is @code{psnr}.
+
+@table @samp
+@item psnr (@emph{0})
+
+@item ssim (@emph{1})
+@end table
+
@item lag-in-frames
Set the maximum number of frames which the encoder may keep in flight
at any one time for lookahead purposes. Defaults to the internal