diff options
| -rw-r--r-- | doc/filters.texi | 2 | ||||
| -rw-r--r-- | libavfilter/avf_showcqt.c | 6 |
2 files changed, 4 insertions, 4 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index cd1aaabc1e..21a5bf5d5f 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -17029,7 +17029,7 @@ Specify the transform timeclamp. At low frequency, there is trade-off between accuracy in time domain and frequency domain. If timeclamp is lower, event in time domain is represented more accurately (such as fast bass drum), otherwise event in frequency domain is represented more accurately -(such as bass guitar). Acceptable range is @code{[0.1, 1]}. Default value is @code{0.17}. +(such as bass guitar). Acceptable range is @code{[0.002, 1]}. Default value is @code{0.17}. @item basefreq Specify the transform base frequency. Default value is @code{20.01523126408007475}, diff --git a/libavfilter/avf_showcqt.c b/libavfilter/avf_showcqt.c index a25176dff7..ede56f4b1c 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); |