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authorPaul B Mahol <onemda@gmail.com>2017-05-20 12:34:51 +0200
committerPaul B Mahol <onemda@gmail.com>2017-05-20 12:43:11 +0200
commite8ae23db27bd308b299c00f2a10e1243cdb08103 (patch)
tree79ebb354b638e83c40cd8d350e117014dae36893
parent64ea4d102a070b95832ae4a751688f87da7760a2 (diff)
avfilter/af_sidechaincompress: change default makeup gain to 1
This avoids producing out of range or clipped samples. Signed-off-by: Paul B Mahol <onemda@gmail.com>
-rw-r--r--doc/filters.texi8
-rw-r--r--libavfilter/af_sidechaincompress.c2
2 files changed, 5 insertions, 5 deletions
diff --git a/doc/filters.texi b/doc/filters.texi
index e29c4d940f..a0ab2fb0c7 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -357,8 +357,8 @@ The filter accepts the following options:
Set input gain. Default is 1. Range is between 0.015625 and 64.
@item threshold
-If a signal of second stream rises above this level it will affect the gain
-reduction of the first stream.
+If a signal of stream rises above this level it will affect the gain
+reduction.
By default it is 0.125. Range is between 0.00097563 and 1.
@item ratio
@@ -376,7 +376,7 @@ reduction is decreased again. Default is 250. Range is between 0.01 and 9000.
@item makeup
Set the amount by how much signal will be amplified after processing.
-Default is 2. Range is from 1 and 64.
+Default is 1. Range is from 1 to 64.
@item knee
Curve the sharp knee around the threshold to enter gain reduction more softly.
@@ -3340,7 +3340,7 @@ reduction is decreased again. Default is 250. Range is between 0.01 and 9000.
@item makeup
Set the amount by how much signal will be amplified after processing.
-Default is 2. Range is from 1 and 64.
+Default is 1. Range is from 1 to 64.
@item knee
Curve the sharp knee around the threshold to enter gain reduction more softly.
diff --git a/libavfilter/af_sidechaincompress.c b/libavfilter/af_sidechaincompress.c
index 3f540e2dff..d1dfc106e2 100644
--- a/libavfilter/af_sidechaincompress.c
+++ b/libavfilter/af_sidechaincompress.c
@@ -72,7 +72,7 @@ static const AVOption options[] = {
{ "ratio", "set ratio", OFFSET(ratio), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 1, 20, A|F },
{ "attack", "set attack", OFFSET(attack), AV_OPT_TYPE_DOUBLE, {.dbl=20}, 0.01, 2000, A|F },
{ "release", "set release", OFFSET(release), AV_OPT_TYPE_DOUBLE, {.dbl=250}, 0.01, 9000, A|F },
- { "makeup", "set make up gain", OFFSET(makeup), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 1, 64, A|F },
+ { "makeup", "set make up gain", OFFSET(makeup), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 1, 64, A|F },
{ "knee", "set knee", OFFSET(knee), AV_OPT_TYPE_DOUBLE, {.dbl=2.82843}, 1, 8, A|F },
{ "link", "set link type", OFFSET(link), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, A|F, "link" },
{ "average", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, A|F, "link" },