ffmpeg: add -fpsmax to clamp output framerate

Useful when encoding in batch or with aberrant inputs.

1 files changed, 7 insertions, 0 deletions

diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi
index 8eb012b7c0..b0d1cf0710 100644
--- a/doc/ffmpeg.texi
+++ b/doc/ffmpeg.texi
@@ -759,6 +759,13 @@ If in doubt use @option{-framerate} instead of the input option @option{-r}.
 As an output option, duplicate or drop input frames to achieve constant output
 frame rate @var{fps}.
 
+@item -fpsmax[:@var{stream_specifier}] @var{fps} (@emph{output,per-stream})
+Set maximum frame rate (Hz value, fraction or abbreviation).
+
+Clamps output frame rate when output framerate is auto-set and is higher than this value.
+Useful in batch processing or when input framerate is wrongly detected as very high.
+It cannot be set together with @code{-r}. It is ignored during streamcopy.
+
 @item -s[:@var{stream_specifier}] @var{size} (@emph{input/output,per-stream})
 Set frame size.