diff --git a/demux/demux.c b/demux/demux.c
index 73bc6247c2..b170b731c0 100644
--- a/demux/demux.c
+++ b/demux/demux.c
@@ -1222,8 +1222,10 @@ static int cached_demux_control(struct demux_internal *in, int cmd, void *arg)
             struct demux_stream *ds = in->d_user->streams[n]->ds;
             if (ds->active) {
                 r->underrun |= !ds->head && !ds->eof;
-                r->ts_range[0] = MP_PTS_MAX(r->ts_range[0], ds->base_ts);
-                r->ts_range[1] = MP_PTS_MIN(r->ts_range[1], ds->last_ts);
+                if (!ds->eof) {
+                    r->ts_range[0] = MP_PTS_MAX(r->ts_range[0], ds->base_ts);
+                    r->ts_range[1] = MP_PTS_MIN(r->ts_range[1], ds->last_ts);
+                }
             }
         }
         r->idle = (in->idle && !r->underrun) || r->eof;