ffmpeg | branch: master | Paul B Mahol <one...@gmail.com> | Thu Mar 17 10:18:08 2022 +0100| [242c07982ad523b2e0f928a204a6f2d293a956d7] | committer: Paul B Mahol
doc/filters: add some afftdn examples > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=242c07982ad523b2e0f928a204a6f2d293a956d7 --- doc/filters.texi | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/doc/filters.texi b/doc/filters.texi index f25c5c1640..d70ac3e237 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -1396,6 +1396,30 @@ Default value is @code{none}. This filter supports the some above mentioned options as @ref{commands}. +@subsection Examples + +@itemize +@item +Reduce white noise by 10dB, and use previously measured noise floor of -40dB: +@example +afftdn=nr=10:nf=-40 +@end example + +@item +Reduce white noise by 10dB, also set initial noise floor to -80dB and enable automatic +tracking of noise floor so noise floor will gradually change during processing: +@example +afftdn=nr=10:nf=-80:tn=1 +@end example + +@item +Reduce noise by 20dB, using noise floor of -40dB and using commands to take noise profile +of first 0.4 seconds of input audio: +@example +asendcmd=0.0 afftdn sn start,asendcmd=0.4 afftdn sn stop,afftdn=nr=20:nf=-40 +@end example +@end itemize + @section afftfilt Apply arbitrary expressions to samples in frequency domain. _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
