diff --git a/libavfilter/framesync.c b/libavfilter/framesync.c
index 0d5779f830..846d1c7e50 100644
--- a/libavfilter/framesync.c
+++ b/libavfilter/framesync.c
@@ -248,7 +248,7 @@ static void framesync_inject_frame(FFFrameSync *fs, unsigned in, AVFrame *frame)
 
     av_assert0(!fs->in[in].have_next);
     av_assert0(frame);
-    pts = av_rescale_q(frame->pts, fs->in[in].time_base, fs->time_base);
+    pts = av_rescale_q_rnd(frame->pts, fs->in[in].time_base, fs->time_base, AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX);
     frame->pts = pts;
     fs->in[in].frame_next = frame;
     fs->in[in].pts_next   = pts;