gistfile1.diff

diff --git a/libavfilter/af_resample.c b/libavfilter/af_resample.c
index eb2d2f9..58b3837 100644
--- a/libavfilter/af_resample.c
+++ b/libavfilter/af_resample.c
@@ -209,7 +209,8 @@ static int filter_samples(AVFilterLink *inlink, AVFilterBufferRef *buf)
 
         if (ret > 0) {
             buf_out->audio->nb_samples = ret;
-            if (buf->pts != AV_NOPTS_VALUE) {
+            if (inlink->sample_rate == outlink->sample_rate &&
+                buf->pts != AV_NOPTS_VALUE) {
                 buf_out->pts = av_rescale_q(buf->pts, inlink->time_base,
                                             outlink->time_base) -
                                av_rescale(delay, outlink->sample_rate,