X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavfilter%2Favf_showcqt.c;h=ede56f4b1c305d21e1dff43a040572d7bd2e7e3e;hb=562f386c77151d5d59151071106170589bce8e63;hp=a25176dff7dc6be902af856942dbd966a79bf98b;hpb=06136275e59c38806b04a1fc9cc92beb82db79b6;p=ffmpeg

diff --git a/libavfilter/avf_showcqt.c b/libavfilter/avf_showcqt.c
index a25176dff7d..ede56f4b1c3 100644
--- a/libavfilter/avf_showcqt.c
+++ b/libavfilter/avf_showcqt.c
@@ -76,8 +76,8 @@ static const AVOption showcqt_options[] = {
     { "bar_g",    "set bargraph gamma", OFFSET(bar_g),      AV_OPT_TYPE_FLOAT, { .dbl = 1.0 },            1.0, 7.0,      FLAGS },
     { "gamma2",   "set bargraph gamma", OFFSET(bar_g),      AV_OPT_TYPE_FLOAT, { .dbl = 1.0 },            1.0, 7.0,      FLAGS },
     { "bar_t",  "set bar transparency", OFFSET(bar_t),      AV_OPT_TYPE_FLOAT, { .dbl = 1.0 },            0.0, 1.0,      FLAGS },
-    { "timeclamp",     "set timeclamp", OFFSET(timeclamp), AV_OPT_TYPE_DOUBLE, { .dbl = 0.17 },           0.1, 1.0,      FLAGS },
-    { "tc",            "set timeclamp", OFFSET(timeclamp), AV_OPT_TYPE_DOUBLE, { .dbl = 0.17 },           0.1, 1.0,      FLAGS },
+    { "timeclamp",     "set timeclamp", OFFSET(timeclamp), AV_OPT_TYPE_DOUBLE, { .dbl = 0.17 },         0.002, 1.0,      FLAGS },
+    { "tc",            "set timeclamp", OFFSET(timeclamp), AV_OPT_TYPE_DOUBLE, { .dbl = 0.17 },         0.002, 1.0,      FLAGS },
     { "basefreq", "set base frequency", OFFSET(basefreq),  AV_OPT_TYPE_DOUBLE, { .dbl = BASEFREQ },      10.0, 100000.0, FLAGS },
     { "endfreq",   "set end frequency", OFFSET(endfreq),   AV_OPT_TYPE_DOUBLE, { .dbl = ENDFREQ },       10.0, 100000.0, FLAGS },
     { "coeffclamp",   "set coeffclamp", OFFSET(coeffclamp), AV_OPT_TYPE_FLOAT, { .dbl = 1.0 },            0.1, 10.0,     FLAGS },
@@ -1366,7 +1366,7 @@ static int config_output(AVFilterLink *outlink)
     if ((ret = init_volume(s)) < 0)
         return ret;
 
-    s->fft_bits = ceil(log2(inlink->sample_rate * s->timeclamp));
+    s->fft_bits = FFMAX(ceil(log2(inlink->sample_rate * s->timeclamp)), 4);
     s->fft_len = 1 << s->fft_bits;
     av_log(ctx, AV_LOG_INFO, "fft_len = %d, cqt_len = %d.\n", s->fft_len, s->cqt_len);