ffmpeg | branch: master | Rui Zhu <[email protected]> | Wed Aug 31 20:51:06 2022 +0800| [36572a0c1d12459cb0fddf6ff8023b79ffa2e100] | committer: Paul B Mahol
avfilter/af_loudnorm: fix incorrect gain when audio is shorter than 3s The input data is multiplied by `s->offset` to get normalized output. `s->target_tp` and `true_peak` is not in dB, so `s->offset` should be calculated by division instead of subtraction. Signed-off-by: Rui Zhu <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=36572a0c1d12459cb0fddf6ff8023b79ffa2e100 --- libavfilter/af_loudnorm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavfilter/af_loudnorm.c b/libavfilter/af_loudnorm.c index 8d2379f14e..ce61e985b1 100644 --- a/libavfilter/af_loudnorm.c +++ b/libavfilter/af_loudnorm.c @@ -455,7 +455,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in) offset = pow(10., (s->target_i - global) / 20.); offset_tp = true_peak * offset; - s->offset = offset_tp < s->target_tp ? offset : s->target_tp - true_peak; + s->offset = offset_tp < s->target_tp ? offset : s->target_tp / true_peak; s->frame_type = LINEAR_MODE; } _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
