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| author | Limin Wang <lance.lmwang@gmail.com> | 2019-10-08 23:04:51 +0800 |
|---|---|---|
| committer | Gyan Doshi <ffmpeg@gyani.pro> | 2019-10-21 10:22:38 +0530 |
| commit | 0afc1fe1470094e84dfa4e25a7f1bb2d52fbb92c (patch) | |
| tree | e6e5e7484dbe34471292ca67e92febed87aaf116 /doc/filters.texi | |
| parent | 09581f7923ed9af7719762868e8f1ff626ea8374 (diff) | |
| download | ffmpeg-0afc1fe1470094e84dfa4e25a7f1bb2d52fbb92c.tar.gz | |
avfilter/af_silencedetect: document metadata
Reviewed-by: Moritz Barsnick <barsnick@gmx.net>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
Diffstat (limited to 'doc/filters.texi')
| -rw-r--r-- | doc/filters.texi | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index db4313da37..234d851e8c 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -4683,7 +4683,16 @@ This filter logs a message when it detects that the input audio volume is less or equal to a noise tolerance value for a duration greater or equal to the minimum detected noise duration. -The printed times and duration are expressed in seconds. +The printed times and duration are expressed in seconds. The +@code{lavfi.silence_start} or @code{lavfi.silence_start.X} metadata key +is set on the first frame whose timestamp equals or exceeds the detection +duration and it contains the timestamp of the first frame of the silence. + +The @code{lavfi.silence_duration} or @code{lavfi.silence_duration.X} +and @code{lavfi.silence_end} or @code{lavfi.silence_end.X} metadata +keys are set on the first frame after the silence. If @option{mono} is +enabled, and each channel is evaluated separately, the @code{.X} +suffixed keys are used, and @code{X} corresponds to the channel number. The filter accepts the following options: |