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-rw-r--r--libavfilter/avf_showwaves.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/libavfilter/avf_showwaves.c b/libavfilter/avf_showwaves.c
index 90d3ec9441..121f785c15 100644
--- a/libavfilter/avf_showwaves.c
+++ b/libavfilter/avf_showwaves.c
@@ -202,7 +202,10 @@ static void filter_samples(AVFilterLink *inlink, AVFilterBufferRef *insamples)
outlink->w, outlink->h);
outpicref->video->w = outlink->w;
outpicref->video->h = outlink->h;
- outpicref->pts = insamples->pts;
+ outpicref->pts = insamples->pts +
+ av_rescale_q((p - (int16_t *)insamples->data[0]) / nb_channels,
+ (AVRational){ 1, inlink->sample_rate },
+ outlink->time_base);
outlink->out_buf = outpicref;
linesize = outpicref->linesize[0];
memset(outpicref->data[0], 0, showwaves->h*linesize);