Add docs for autoscale/noautoscale.

Update information for autorotate according to ffplay.

Signed-off-by: Linjie Fu <>
 doc/ffmpeg.texi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi
index cd35eb49c8..040a2b53cf 100644
--- a/doc/ffmpeg.texi
+++ b/doc/ffmpeg.texi
@@ -735,9 +735,20 @@ Technical note -- attachments are implemented as codec 
extradata, so this
 option can actually be used to extract extradata from any stream, not just
+@item -autorotate
+Automatically rotate the video according to file metadata. Enabled by
+default, use @option{-noautorotate} to disable it.
+@item -autoscale
+Automatically scale the video according to the resolution of first frame.
+Enabled by default, use @option{-noautoscale} to disable it.
 @item -noautorotate
 Disable automatically rotating video based on file metadata.
+@item -noautoscale
+Disable automatically scale video based on first frame resolution.
 @end table
 @section Video Options

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