From: Limin Wang <lance.lmw...@gmail.com>
Signed-off-by: Limin Wang <lance.lmw...@gmail.com>
---
doc/filters.texi | 10 +++++++++-
libavfilter/af_silencedetect.c | 1 -
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/doc/filters.texi b/doc/filters.texi
index 333f502..697ec21 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -4563,7 +4563,15 @@ 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. Where @code{X} is the channel number and .X is
used
+if @option{mono} is enabled.
The filter accepts the following options:
diff --git a/libavfilter/af_silencedetect.c b/libavfilter/af_silencedetect.c
index c31109f..193d0fe 100644
--- a/libavfilter/af_silencedetect.c
+++ b/libavfilter/af_silencedetect.c
@@ -187,7 +187,6 @@ static int filter_frame(AVFilterLink *inlink, AVFrame
*insamples)
s->frame_end = insamples->pts + av_rescale_q(insamples->nb_samples,
(AVRational){ 1, s->last_sample_rate }, inlink->time_base);
- // TODO: document metadata
s->silencedetect(s, insamples, nb_samples, nb_samples_notify,
inlink->time_base);
--
2.6.4
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